Merge branch 'linus' into tracing/hw-breakpoints

Conflicts:
	arch/x86/Kconfig
	arch/x86/kernel/traps.c
	arch/x86/power/cpu.c
	arch/x86/power/cpu_32.c
	kernel/Makefile

Semantic conflict:
	arch/x86/kernel/hw_breakpoint.c

Merge reason: Resolve the conflicts, move from put_cpu_no_sched() to
              put_cpu() in arch/x86/kernel/hw_breakpoint.c.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 452 insertions, 430 deletions

diff --git a/drivers/media/video/se401.c b/drivers/media/video/se401.c
index 5990ab38a124..c8f05297d0f0 100644
--- a/drivers/media/video/se401.c
+++ b/drivers/media/video/se401.c
@@ -38,7 +38,7 @@ static const char version[] = "0.24";
 static int flickerless;
 static int video_nr = -1;
 
-static struct usb_device_id device_table [] = {
+static struct usb_device_id device_table[] = {
 	{ USB_DEVICE(0x03e8, 0x0004) },/* Endpoints/Aox SE401 */
 	{ USB_DEVICE(0x0471, 0x030b) },/* Philips PCVC665K */
 	{ USB_DEVICE(0x047d, 0x5001) },/* Kensington 67014 */
@@ -53,7 +53,8 @@ MODULE_AUTHOR("Jeroen Vreeken <pe1rxq@amsat.org>");
 MODULE_DESCRIPTION("SE401 USB Camera Driver");
 MODULE_LICENSE("GPL");
 module_param(flickerless, int, 0);
-MODULE_PARM_DESC(flickerless, "Net frequency to adjust exposure time to (0/50/60)");
+MODULE_PARM_DESC(flickerless,
+		"Net frequency to adjust exposure time to (0/50/60)");
 module_param(video_nr, int, 0);
 
 static struct usb_driver se401_driver;
@@ -78,8 +79,8 @@ static void *rvmalloc(unsigned long size)
 	adr = (unsigned long) mem;
 	while (size > 0) {
 		SetPageReserved(vmalloc_to_page((void *)adr));
-		adr += PAGE_SIZE;
-		size -= PAGE_SIZE;
+		adr +=  PAGE_SIZE;
+		size -=  PAGE_SIZE;
 	}
 
 	return mem;
@@ -95,8 +96,8 @@ static void rvfree(void *mem, unsigned long size)
 	adr = (unsigned long) mem;
 	while ((long) size > 0) {
 		ClearPageReserved(vmalloc_to_page((void *)adr));
-		adr += PAGE_SIZE;
-		size -= PAGE_SIZE;
+		adr +=  PAGE_SIZE;
+		size -=  PAGE_SIZE;
 	}
 	vfree(mem);
 }
@@ -112,7 +113,7 @@ static void rvfree(void *mem, unsigned long size)
 static int se401_sndctrl(int set, struct usb_se401 *se401, unsigned short req,
 			 unsigned short value, unsigned char *cp, int size)
 {
-	return usb_control_msg (
+	return usb_control_msg(
 		se401->dev,
 		set ? usb_sndctrlpipe(se401->dev, 0) : usb_rcvctrlpipe(se401->dev, 0),
 		req,
@@ -132,7 +133,7 @@ static int se401_set_feature(struct usb_se401 *se401, unsigned short selector,
 	   and the param in index, but in the logs of the windows driver they do
 	   this the other way around...
 	 */
-	return usb_control_msg (
+	return usb_control_msg(
 		se401->dev,
 		usb_sndctrlpipe(se401->dev, 0),
 		SE401_REQ_SET_EXT_FEATURE,
@@ -152,7 +153,7 @@ static unsigned short se401_get_feature(struct usb_se401 *se401,
 	   wrong here to....
 	 */
 	unsigned char cp[2];
-	usb_control_msg (
+	usb_control_msg(
 		se401->dev,
 		usb_rcvctrlpipe(se401->dev, 0),
 		SE401_REQ_GET_EXT_FEATURE,
@@ -175,46 +176,51 @@ static unsigned short se401_get_feature(struct usb_se401 *se401,
 
 static int se401_send_pict(struct usb_se401 *se401)
 {
-	se401_set_feature(se401, HV7131_REG_TITL, se401->expose_l);/* integration time low */
-	se401_set_feature(se401, HV7131_REG_TITM, se401->expose_m);/* integration time mid */
-	se401_set_feature(se401, HV7131_REG_TITU, se401->expose_h);/* integration time mid */
-	se401_set_feature(se401, HV7131_REG_ARLV, se401->resetlevel);/* reset level value */
-	se401_set_feature(se401, HV7131_REG_ARCG, se401->rgain);/* red color gain */
-	se401_set_feature(se401, HV7131_REG_AGCG, se401->ggain);/* green color gain */
-	se401_set_feature(se401, HV7131_REG_ABCG, se401->bgain);/* blue color gain */
+	/* integration time low */
+	se401_set_feature(se401, HV7131_REG_TITL, se401->expose_l);
+	/* integration time mid */
+	se401_set_feature(se401, HV7131_REG_TITM, se401->expose_m);
+	/* integration time mid */
+	se401_set_feature(se401, HV7131_REG_TITU, se401->expose_h);
+	/* reset level value */
+	se401_set_feature(se401, HV7131_REG_ARLV, se401->resetlevel);
+	/* red color gain */
+	se401_set_feature(se401, HV7131_REG_ARCG, se401->rgain);
+	/* green color gain */
+	se401_set_feature(se401, HV7131_REG_AGCG, se401->ggain);
+	/* blue color gain */
+	se401_set_feature(se401, HV7131_REG_ABCG, se401->bgain);
 
 	return 0;
 }
 
 static void se401_set_exposure(struct usb_se401 *se401, int brightness)
 {
-	int integration=brightness<<5;
-
-	if (flickerless==50) {
-		integration=integration-integration%106667;
-	}
-	if (flickerless==60) {
-		integration=integration-integration%88889;
-	}
-	se401->brightness=integration>>5;
-	se401->expose_h=(integration>>16)&0xff;
-	se401->expose_m=(integration>>8)&0xff;
-	se401->expose_l=integration&0xff;
+	int integration = brightness << 5;
+
+	if (flickerless == 50)
+		integration = integration-integration % 106667;
+	if (flickerless == 60)
+		integration = integration-integration % 88889;
+	se401->brightness = integration >> 5;
+	se401->expose_h = (integration >> 16) & 0xff;
+	se401->expose_m = (integration >> 8) & 0xff;
+	se401->expose_l = integration & 0xff;
 }
 
 static int se401_get_pict(struct usb_se401 *se401, struct video_picture *p)
 {
-	p->brightness=se401->brightness;
-	if (se401->enhance) {
-		p->whiteness=32768;
-	} else {
-		p->whiteness=0;
-	}
-	p->colour=65535;
-	p->contrast=65535;
-	p->hue=se401->rgain<<10;
-	p->palette=se401->palette;
-	p->depth=3; /* rgb24 */
+	p->brightness = se401->brightness;
+	if (se401->enhance)
+		p->whiteness = 32768;
+	else
+		p->whiteness = 0;
+
+	p->colour = 65535;
+	p->contrast = 65535;
+	p->hue = se401->rgain << 10;
+	p->palette = se401->palette;
+	p->depth = 3; /* rgb24 */
 	return 0;
 }
 
@@ -223,20 +229,19 @@ static int se401_set_pict(struct usb_se401 *se401, struct video_picture *p)
 {
 	if (p->palette != VIDEO_PALETTE_RGB24)
 		return 1;
-	se401->palette=p->palette;
-	if (p->hue!=se401->hue) {
-		se401->rgain= p->hue>>10;
-		se401->bgain= 0x40-(p->hue>>10);
-		se401->hue=p->hue;
+	se401->palette = p->palette;
+	if (p->hue != se401->hue) {
+		se401->rgain =  p->hue >> 10;
+		se401->bgain =  0x40-(p->hue >> 10);
+		se401->hue = p->hue;
 	}
-	if (p->brightness!=se401->brightness) {
+	if (p->brightness != se401->brightness)
 		se401_set_exposure(se401, p->brightness);
-	}
-	if (p->whiteness>=32768) {
-		se401->enhance=1;
-	} else {
-		se401->enhance=0;
-	}
+
+	if (p->whiteness >= 32768)
+		se401->enhance = 1;
+	else
+		se401->enhance = 0;
 	se401_send_pict(se401);
 	se401_send_pict(se401);
 	return 0;
@@ -249,7 +254,7 @@ static int se401_set_pict(struct usb_se401 *se401, struct video_picture *p)
 static void se401_auto_resetlevel(struct usb_se401 *se401)
 {
 	unsigned int ahrc, alrc;
-	int oldreset=se401->resetlevel;
+	int oldreset = se401->resetlevel;
 
 	/* For some reason this normally read-only register doesn't get reset
 	   to zero after reading them just once...
@@ -258,24 +263,24 @@ static void se401_auto_resetlevel(struct usb_se401 *se401)
 	se401_get_feature(se401, HV7131_REG_HIREFNOL);
 	se401_get_feature(se401, HV7131_REG_LOREFNOH);
 	se401_get_feature(se401, HV7131_REG_LOREFNOL);
-	ahrc=256*se401_get_feature(se401, HV7131_REG_HIREFNOH) +
+	ahrc = 256*se401_get_feature(se401, HV7131_REG_HIREFNOH) +
 	    se401_get_feature(se401, HV7131_REG_HIREFNOL);
-	alrc=256*se401_get_feature(se401, HV7131_REG_LOREFNOH) +
+	alrc = 256*se401_get_feature(se401, HV7131_REG_LOREFNOH) +
 	    se401_get_feature(se401, HV7131_REG_LOREFNOL);
 
 	/* Not an exact science, but it seems to work pretty well... */
 	if (alrc > 10) {
-		while (alrc>=10 && se401->resetlevel < 63) {
+		while (alrc >= 10 && se401->resetlevel < 63) {
 			se401->resetlevel++;
-			alrc /=2;
+			alrc /= 2;
 		}
 	} else if (ahrc > 20) {
-		while (ahrc>=20 && se401->resetlevel > 0) {
+		while (ahrc >= 20 && se401->resetlevel > 0) {
 			se401->resetlevel--;
-			ahrc /=2;
+			ahrc /= 2;
 		}
 	}
-	if (se401->resetlevel!=oldreset)
+	if (se401->resetlevel != oldreset)
 		se401_set_feature(se401, HV7131_REG_ARLV, se401->resetlevel);
 
 	return;
@@ -300,21 +305,22 @@ static void se401_button_irq(struct urb *urb)
 	case -ENOENT:
 	case -ESHUTDOWN:
 		/* this urb is terminated, clean up */
-		dbg("%s - urb shutting down with status: %d", __func__, urb->status);
+		dbg("%s - urb shutting down with status: %d",
+							__func__, urb->status);
 		return;
 	default:
-		dbg("%s - nonzero urb status received: %d", __func__, urb->status);
+		dbg("%s - nonzero urb status received: %d",
+							__func__, urb->status);
 		goto exit;
 	}
 
-	if (urb->actual_length >=2) {
+	if (urb->actual_length  >= 2)
 		if (se401->button)
-			se401->buttonpressed=1;
-	}
+			se401->buttonpressed = 1;
 exit:
-	status = usb_submit_urb (urb, GFP_ATOMIC);
+	status = usb_submit_urb(urb, GFP_ATOMIC);
 	if (status)
-		err ("%s - usb_submit_urb failed with result %d",
+		err("%s - usb_submit_urb failed with result %d",
 		     __func__, status);
 }
 
@@ -336,55 +342,52 @@ static void se401_video_irq(struct urb *urb)
 	   keeps sending them forever...
 	 */
 	if (length && !urb->status) {
-		se401->nullpackets=0;
-		switch(se401->scratch[se401->scratch_next].state) {
-			case BUFFER_READY:
-			case BUFFER_BUSY: {
-				se401->dropped++;
-				break;
-			}
-			case BUFFER_UNUSED: {
-				memcpy(se401->scratch[se401->scratch_next].data, (unsigned char *)urb->transfer_buffer, length);
-				se401->scratch[se401->scratch_next].state=BUFFER_READY;
-				se401->scratch[se401->scratch_next].offset=se401->bayeroffset;
-				se401->scratch[se401->scratch_next].length=length;
-				if (waitqueue_active(&se401->wq)) {
-					wake_up_interruptible(&se401->wq);
-				}
-				se401->scratch_overflow=0;
-				se401->scratch_next++;
-				if (se401->scratch_next>=SE401_NUMSCRATCH)
-					se401->scratch_next=0;
-				break;
-			}
-		}
-		se401->bayeroffset+=length;
-		if (se401->bayeroffset>=se401->cheight*se401->cwidth) {
-			se401->bayeroffset=0;
+		se401->nullpackets = 0;
+		switch (se401->scratch[se401->scratch_next].state) {
+		case BUFFER_READY:
+		case BUFFER_BUSY:
+			se401->dropped++;
+			break;
+		case BUFFER_UNUSED:
+			memcpy(se401->scratch[se401->scratch_next].data,
+				(unsigned char *)urb->transfer_buffer, length);
+			se401->scratch[se401->scratch_next].state
+							= BUFFER_READY;
+			se401->scratch[se401->scratch_next].offset
+							= se401->bayeroffset;
+			se401->scratch[se401->scratch_next].length = length;
+			if (waitqueue_active(&se401->wq))
+				wake_up_interruptible(&se401->wq);
+			se401->scratch_overflow = 0;
+			se401->scratch_next++;
+			if (se401->scratch_next >= SE401_NUMSCRATCH)
+				se401->scratch_next = 0;
+			break;
 		}
+		se401->bayeroffset += length;
+		if (se401->bayeroffset >= se401->cheight * se401->cwidth)
+			se401->bayeroffset = 0;
 	} else {
 		se401->nullpackets++;
-		if (se401->nullpackets > SE401_MAX_NULLPACKETS) {
-			if (waitqueue_active(&se401->wq)) {
+		if (se401->nullpackets > SE401_MAX_NULLPACKETS)
+			if (waitqueue_active(&se401->wq))
 				wake_up_interruptible(&se401->wq);
-			}
-		}
 	}
 
 	/* Resubmit urb for new data */
-	urb->status=0;
-	urb->dev=se401->dev;
-	if(usb_submit_urb(urb, GFP_KERNEL))
+	urb->status = 0;
+	urb->dev = se401->dev;
+	if (usb_submit_urb(urb, GFP_KERNEL))
 		dev_info(&urb->dev->dev, "urb burned down\n");
 	return;
 }
 
 static void se401_send_size(struct usb_se401 *se401, int width, int height)
 {
-	int i=0;
-	int mode=0x03; /* No compression */
-	int sendheight=height;
-	int sendwidth=width;
+	int i = 0;
+	int mode = 0x03; /* No compression */
+	int sendheight = height;
+	int sendwidth = width;
 
 	/* JangGu compression can only be used with the camera supported sizes,
 	   but bayer seems to work with any size that fits on the sensor.
@@ -392,18 +395,21 @@ static void se401_send_size(struct usb_se401 *se401, int width, int height)
 	   4 or 16 times subcapturing, if not we use uncompressed bayer data
 	   but this will result in cutouts of the maximum size....
 	 */
-	while (i<se401->sizes && !(se401->width[i]==width && se401->height[i]==height))
+	while (i < se401->sizes && !(se401->width[i] == width &&
+						se401->height[i] == height))
 		i++;
-	while (i<se401->sizes) {
-		if (se401->width[i]==width*2 && se401->height[i]==height*2) {
-			sendheight=se401->height[i];
-			sendwidth=se401->width[i];
-			mode=0x40;
+	while (i < se401->sizes) {
+		if (se401->width[i] == width * 2 &&
+				se401->height[i] == height * 2) {
+			sendheight = se401->height[i];
+			sendwidth = se401->width[i];
+			mode = 0x40;
 		}
-		if (se401->width[i]==width*4 && se401->height[i]==height*4) {
-			sendheight=se401->height[i];
-			sendwidth=se401->width[i];
-			mode=0x42;
+		if (se401->width[i] == width * 4 &&
+				se401->height[i] == height * 4) {
+			sendheight = se401->height[i];
+			sendwidth = se401->width[i];
+			mode = 0x42;
 		}
 		i++;
 	}
@@ -412,13 +418,10 @@ static void se401_send_size(struct usb_se401 *se401, int width, int height)
 	se401_sndctrl(1, se401, SE401_REQ_SET_HEIGHT, sendheight, NULL, 0);
 	se401_set_feature(se401, SE401_OPERATINGMODE, mode);
 
-	if (mode==0x03) {
-		se401->format=FMT_BAYER;
-	} else {
-		se401->format=FMT_JANGGU;
-	}
-
-	return;
+	if (mode == 0x03)
+		se401->format = FMT_BAYER;
+	else
+		se401->format = FMT_JANGGU;
 }
 
 /*
@@ -429,29 +432,31 @@ static void se401_send_size(struct usb_se401 *se401, int width, int height)
 static int se401_start_stream(struct usb_se401 *se401)
 {
 	struct urb *urb;
-	int err=0, i;
-	se401->streaming=1;
+	int err = 0, i;
+	se401->streaming = 1;
 
 	se401_sndctrl(1, se401, SE401_REQ_CAMERA_POWER, 1, NULL, 0);
 	se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 1, NULL, 0);
 
 	/* Set picture settings */
-	se401_set_feature(se401, HV7131_REG_MODE_B, 0x05);/*windowed + pix intg */
+	/* windowed + pix intg */
+	se401_set_feature(se401, HV7131_REG_MODE_B, 0x05);
 	se401_send_pict(se401);
 
 	se401_send_size(se401, se401->cwidth, se401->cheight);
 
-	se401_sndctrl(1, se401, SE401_REQ_START_CONTINUOUS_CAPTURE, 0, NULL, 0);
+	se401_sndctrl(1, se401, SE401_REQ_START_CONTINUOUS_CAPTURE,
+								0, NULL, 0);
 
 	/* Do some memory allocation */
-	for (i=0; i<SE401_NUMFRAMES; i++) {
-		se401->frame[i].data=se401->fbuf + i * se401->maxframesize;
-		se401->frame[i].curpix=0;
+	for (i = 0; i < SE401_NUMFRAMES; i++) {
+		se401->frame[i].data = se401->fbuf + i * se401->maxframesize;
+		se401->frame[i].curpix = 0;
 	}
-	for (i=0; i<SE401_NUMSBUF; i++) {
-		se401->sbuf[i].data=kmalloc(SE401_PACKETSIZE, GFP_KERNEL);
+	for (i = 0; i < SE401_NUMSBUF; i++) {
+		se401->sbuf[i].data = kmalloc(SE401_PACKETSIZE, GFP_KERNEL);
 		if (!se401->sbuf[i].data) {
-			for(i = i - 1; i >= 0; i--) {
+			for (i = i - 1; i >= 0; i--) {
 				kfree(se401->sbuf[i].data);
 				se401->sbuf[i].data = NULL;
 			}
@@ -459,26 +464,26 @@ static int se401_start_stream(struct usb_se401 *se401)
 		}
 	}
 
-	se401->bayeroffset=0;
-	se401->scratch_next=0;
-	se401->scratch_use=0;
-	se401->scratch_overflow=0;
-	for (i=0; i<SE401_NUMSCRATCH; i++) {
-		se401->scratch[i].data=kmalloc(SE401_PACKETSIZE, GFP_KERNEL);
+	se401->bayeroffset = 0;
+	se401->scratch_next = 0;
+	se401->scratch_use = 0;
+	se401->scratch_overflow = 0;
+	for (i = 0; i < SE401_NUMSCRATCH; i++) {
+		se401->scratch[i].data = kmalloc(SE401_PACKETSIZE, GFP_KERNEL);
 		if (!se401->scratch[i].data) {
-			for(i = i - 1; i >= 0; i--) {
+			for (i = i - 1; i >= 0; i--) {
 				kfree(se401->scratch[i].data);
 				se401->scratch[i].data = NULL;
 			}
 			goto nomem_sbuf;
 		}
-		se401->scratch[i].state=BUFFER_UNUSED;
+		se401->scratch[i].state = BUFFER_UNUSED;
 	}
 
-	for (i=0; i<SE401_NUMSBUF; i++) {
-		urb=usb_alloc_urb(0, GFP_KERNEL);
-		if(!urb) {
-			for(i = i - 1; i >= 0; i--) {
+	for (i = 0; i < SE401_NUMSBUF; i++) {
+		urb = usb_alloc_urb(0, GFP_KERNEL);
+		if (!urb) {
+			for (i = i - 1; i >= 0; i--) {
 				usb_kill_urb(se401->urb[i]);
 				usb_free_urb(se401->urb[i]);
 				se401->urb[i] = NULL;
@@ -492,24 +497,24 @@ static int se401_start_stream(struct usb_se401 *se401)
 			se401_video_irq,
 			se401);
 
-		se401->urb[i]=urb;
+		se401->urb[i] = urb;
 
-		err=usb_submit_urb(se401->urb[i], GFP_KERNEL);
-		if(err)
+		err = usb_submit_urb(se401->urb[i], GFP_KERNEL);
+		if (err)
 			err("urb burned down");
 	}
 
-	se401->framecount=0;
+	se401->framecount = 0;
 
 	return 0;
 
  nomem_scratch:
-	for (i=0; i<SE401_NUMSCRATCH; i++) {
+	for (i = 0; i < SE401_NUMSCRATCH; i++) {
 		kfree(se401->scratch[i].data);
 		se401->scratch[i].data = NULL;
 	}
  nomem_sbuf:
-	for (i=0; i<SE401_NUMSBUF; i++) {
+	for (i = 0; i < SE401_NUMSBUF; i++) {
 		kfree(se401->sbuf[i].data);
 		se401->sbuf[i].data = NULL;
 	}
@@ -523,22 +528,23 @@ static int se401_stop_stream(struct usb_se401 *se401)
 	if (!se401->streaming || !se401->dev)
 		return 1;
 
-	se401->streaming=0;
+	se401->streaming = 0;
 
 	se401_sndctrl(1, se401, SE401_REQ_STOP_CONTINUOUS_CAPTURE, 0, NULL, 0);
 
 	se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 0, NULL, 0);
 	se401_sndctrl(1, se401, SE401_REQ_CAMERA_POWER, 0, NULL, 0);
 
-	for (i=0; i<SE401_NUMSBUF; i++) if (se401->urb[i]) {
-		usb_kill_urb(se401->urb[i]);
-		usb_free_urb(se401->urb[i]);
-		se401->urb[i]=NULL;
-		kfree(se401->sbuf[i].data);
-	}
-	for (i=0; i<SE401_NUMSCRATCH; i++) {
+	for (i = 0; i < SE401_NUMSBUF; i++)
+		if (se401->urb[i]) {
+			usb_kill_urb(se401->urb[i]);
+			usb_free_urb(se401->urb[i]);
+			se401->urb[i] = NULL;
+			kfree(se401->sbuf[i].data);
+		}
+	for (i = 0; i < SE401_NUMSCRATCH; i++) {
 		kfree(se401->scratch[i].data);
-		se401->scratch[i].data=NULL;
+		se401->scratch[i].data = NULL;
 	}
 
 	return 0;
@@ -546,9 +552,9 @@ static int se401_stop_stream(struct usb_se401 *se401)
 
 static int se401_set_size(struct usb_se401 *se401, int width, int height)
 {
-	int wasstreaming=se401->streaming;
+	int wasstreaming = se401->streaming;
 	/* Check to see if we need to change */
-	if (se401->cwidth==width && se401->cheight==height)
+	if (se401->cwidth == width && se401->cheight == height)
 		return 0;
 
 	/* Check for a valid mode */
@@ -556,16 +562,16 @@ static int se401_set_size(struct usb_se401 *se401, int width, int height)
 		return 1;
 	if ((width & 1) || (height & 1))
 		return 1;
-	if (width>se401->width[se401->sizes-1])
+	if (width > se401->width[se401->sizes-1])
 		return 1;
-	if (height>se401->height[se401->sizes-1])
+	if (height > se401->height[se401->sizes-1])
 		return 1;
 
 	/* Stop a current stream and start it again at the new size */
 	if (wasstreaming)
 		se401_stop_stream(se401);
-	se401->cwidth=width;
-	se401->cheight=height;
+	se401->cwidth = width;
+	se401->cheight = height;
 	if (wasstreaming)
 		se401_start_stream(se401);
 	return 0;
@@ -586,68 +592,68 @@ static int se401_set_size(struct usb_se401 *se401, int width, int height)
 static inline void enhance_picture(unsigned char *frame, int len)
 {
 	while (len--) {
-		*frame=(((*frame^255)*(*frame^255))/255)^255;
+		*frame = (((*frame^255)*(*frame^255))/255)^255;
 		frame++;
 	}
 }
 
 static inline void decode_JangGu_integrate(struct usb_se401 *se401, int data)
 {
-	struct se401_frame *frame=&se401->frame[se401->curframe];
-	int linelength=se401->cwidth*3;
+	struct se401_frame *frame = &se401->frame[se401->curframe];
+	int linelength = se401->cwidth * 3;
 
 	if (frame->curlinepix >= linelength) {
-		frame->curlinepix=0;
-		frame->curline+=linelength;
+		frame->curlinepix = 0;
+		frame->curline += linelength;
 	}
 
 	/* First three are absolute, all others relative.
 	 * Format is rgb from right to left (mirrorred image),
 	 * we flip it to get bgr from left to right. */
-	if (frame->curlinepix < 3) {
-		*(frame->curline-frame->curlinepix)=1+data*4;
-	} else {
-		*(frame->curline-frame->curlinepix)=
-		    *(frame->curline-frame->curlinepix+3)+data*4;
-	}
+	if (frame->curlinepix < 3)
+		*(frame->curline-frame->curlinepix) = 1 + data * 4;
+	else
+		*(frame->curline-frame->curlinepix) =
+		    *(frame->curline-frame->curlinepix + 3) + data * 4;
 	frame->curlinepix++;
 }
 
-static inline void decode_JangGu_vlc (struct usb_se401 *se401, unsigned char *data, int bit_exp, int packetlength)
+static inline void decode_JangGu_vlc(struct usb_se401 *se401,
+			unsigned char *data, int bit_exp, int packetlength)
 {
-	int pos=0;
-	int vlc_cod=0;
-	int vlc_size=0;
-	int vlc_data=0;
+	int pos = 0;
+	int vlc_cod = 0;
+	int vlc_size = 0;
+	int vlc_data = 0;
 	int bit_cur;
 	int bit;
-	data+=4;
+	data += 4;
 	while (pos < packetlength) {
-		bit_cur=8;
+		bit_cur = 8;
 		while (bit_cur && bit_exp) {
-			bit=((*data)>>(bit_cur-1))&1;
+			bit = ((*data) >> (bit_cur-1))&1;
 			if (!vlc_cod) {
 				if (bit) {
 					vlc_size++;
 				} else {
-					if (!vlc_size) {
+					if (!vlc_size)
 						decode_JangGu_integrate(se401, 0);
-					} else {
-						vlc_cod=2;
-						vlc_data=0;
+					else {
+						vlc_cod = 2;
+						vlc_data = 0;
 					}
 				}
 			} else {
-				if (vlc_cod==2) {
+				if (vlc_cod == 2) {
 					if (!bit)
-						vlc_data =  -(1<<vlc_size) + 1;
+						vlc_data =  -(1 << vlc_size) + 1;
 					vlc_cod--;
 				}
 				vlc_size--;
-				vlc_data+=bit<<vlc_size;
+				vlc_data += bit << vlc_size;
 				if (!vlc_size) {
 					decode_JangGu_integrate(se401, vlc_data);
-					vlc_cod=0;
+					vlc_cod = 0;
 				}
 			}
 			bit_cur--;
@@ -658,186 +664,188 @@ static inline void decode_JangGu_vlc (struct usb_se401 *se401, unsigned char *da
 	}
 }
 
-static inline void decode_JangGu (struct usb_se401 *se401, struct se401_scratch *buffer)
+static inline void decode_JangGu(struct usb_se401 *se401,
+						struct se401_scratch *buffer)
 {
-	unsigned char *data=buffer->data;
-	int len=buffer->length;
-	int bit_exp=0, pix_exp=0, frameinfo=0, packetlength=0, size;
-	int datapos=0;
+	unsigned char *data = buffer->data;
+	int len = buffer->length;
+	int bit_exp = 0, pix_exp = 0, frameinfo = 0, packetlength = 0, size;
+	int datapos = 0;
 
 	/* New image? */
 	if (!se401->frame[se401->curframe].curpix) {
-		se401->frame[se401->curframe].curlinepix=0;
-		se401->frame[se401->curframe].curline=
+		se401->frame[se401->curframe].curlinepix = 0;
+		se401->frame[se401->curframe].curline =
 		    se401->frame[se401->curframe].data+
-		    se401->cwidth*3-1;
-		if (se401->frame[se401->curframe].grabstate==FRAME_READY)
-			se401->frame[se401->curframe].grabstate=FRAME_GRABBING;
-		se401->vlcdatapos=0;
+		    se401->cwidth * 3 - 1;
+		if (se401->frame[se401->curframe].grabstate == FRAME_READY)
+			se401->frame[se401->curframe].grabstate = FRAME_GRABBING;
+		se401->vlcdatapos = 0;
 	}
 	while (datapos < len) {
-		size=1024-se401->vlcdatapos;
+		size = 1024 - se401->vlcdatapos;
 		if (size+datapos > len)
-			size=len-datapos;
+			size = len-datapos;
 		memcpy(se401->vlcdata+se401->vlcdatapos, data+datapos, size);
-		se401->vlcdatapos+=size;
-		packetlength=0;
+		se401->vlcdatapos += size;
+		packetlength = 0;
 		if (se401->vlcdatapos >= 4) {
-			bit_exp=se401->vlcdata[3]+(se401->vlcdata[2]<<8);
-			pix_exp=se401->vlcdata[1]+((se401->vlcdata[0]&0x3f)<<8);
-			frameinfo=se401->vlcdata[0]&0xc0;
-			packetlength=((bit_exp+47)>>4)<<1;
+			bit_exp = se401->vlcdata[3] + (se401->vlcdata[2] << 8);
+			pix_exp = se401->vlcdata[1] +
+					((se401->vlcdata[0] & 0x3f) << 8);
+			frameinfo = se401->vlcdata[0] & 0xc0;
+			packetlength = ((bit_exp + 47) >> 4) << 1;
 			if (packetlength > 1024) {
-				se401->vlcdatapos=0;
-				datapos=len;
-				packetlength=0;
+				se401->vlcdatapos = 0;
+				datapos = len;
+				packetlength = 0;
 				se401->error++;
-				se401->frame[se401->curframe].curpix=0;
+				se401->frame[se401->curframe].curpix = 0;
 			}
 		}
 		if (packetlength && se401->vlcdatapos >= packetlength) {
-			decode_JangGu_vlc(se401, se401->vlcdata, bit_exp, packetlength);
-			se401->frame[se401->curframe].curpix+=pix_exp*3;
-			datapos+=size-(se401->vlcdatapos-packetlength);
-			se401->vlcdatapos=0;
-			if (se401->frame[se401->curframe].curpix>=se401->cwidth*se401->cheight*3) {
-				if (se401->frame[se401->curframe].curpix==se401->cwidth*se401->cheight*3) {
-					if (se401->frame[se401->curframe].grabstate==FRAME_GRABBING) {
-						se401->frame[se401->curframe].grabstate=FRAME_DONE;
+			decode_JangGu_vlc(se401, se401->vlcdata, bit_exp,
+								packetlength);
+			se401->frame[se401->curframe].curpix += pix_exp * 3;
+			datapos += size-(se401->vlcdatapos-packetlength);
+			se401->vlcdatapos = 0;
+			if (se401->frame[se401->curframe].curpix >= se401->cwidth * se401->cheight * 3) {
+				if (se401->frame[se401->curframe].curpix == se401->cwidth * se401->cheight * 3) {
+					if (se401->frame[se401->curframe].grabstate == FRAME_GRABBING) {
+						se401->frame[se401->curframe].grabstate = FRAME_DONE;
 						se401->framecount++;
 						se401->readcount++;
 					}
-					if (se401->frame[(se401->curframe+1)&(SE401_NUMFRAMES-1)].grabstate==FRAME_READY) {
-						se401->curframe=(se401->curframe+1) & (SE401_NUMFRAMES-1);
-					}
-				} else {
+					if (se401->frame[(se401->curframe + 1) & (SE401_NUMFRAMES - 1)].grabstate == FRAME_READY)
+						se401->curframe = (se401->curframe + 1) & (SE401_NUMFRAMES - 1);
+				} else
 					se401->error++;
-				}
-				se401->frame[se401->curframe].curpix=0;
-				datapos=len;
+				se401->frame[se401->curframe].curpix = 0;
+				datapos = len;
 			}
-		} else {
-			datapos+=size;
-		}
+		} else
+			datapos += size;
 	}
 }
 
-static inline void decode_bayer (struct usb_se401 *se401, struct se401_scratch *buffer)
+static inline void decode_bayer(struct usb_se401 *se401,
+						struct se401_scratch *buffer)
 {
-	unsigned char *data=buffer->data;
-	int len=buffer->length;
-	int offset=buffer->offset;
-	int datasize=se401->cwidth*se401->cheight;
-	struct se401_frame *frame=&se401->frame[se401->curframe];
+	unsigned char *data = buffer->data;
+	int len = buffer->length;
+	int offset = buffer->offset;
+	int datasize = se401->cwidth * se401->cheight;
+	struct se401_frame *frame = &se401->frame[se401->curframe];
+	unsigned char *framedata = frame->data, *curline, *nextline;
+	int width = se401->cwidth;
+	int blineoffset = 0, bline;
+	int linelength = width * 3, i;
 
-	unsigned char *framedata=frame->data, *curline, *nextline;
-	int width=se401->cwidth;
-	int blineoffset=0, bline;
-	int linelength=width*3, i;
 
+	if (frame->curpix == 0) {
+		if (frame->grabstate == FRAME_READY)
+			frame->grabstate = FRAME_GRABBING;
 
-	if (frame->curpix==0) {
-		if (frame->grabstate==FRAME_READY) {
-			frame->grabstate=FRAME_GRABBING;
-		}
-		frame->curline=framedata+linelength;
-		frame->curlinepix=0;
+		frame->curline = framedata + linelength;
+		frame->curlinepix = 0;
 	}
 
-	if (offset!=frame->curpix) {
+	if (offset != frame->curpix) {
 		/* Regard frame as lost :( */
-		frame->curpix=0;
+		frame->curpix = 0;
 		se401->error++;
 		return;
 	}
 
 	/* Check if we have to much data */
-	if (frame->curpix+len > datasize) {
-		len=datasize-frame->curpix;
-	}
-	if (se401->cheight%4)
-		blineoffset=1;
-	bline=frame->curpix/se401->cwidth+blineoffset;
-
-	curline=frame->curline;
-	nextline=curline+linelength;
-	if (nextline >= framedata+datasize*3)
-		nextline=curline;
+	if (frame->curpix + len > datasize)
+		len = datasize-frame->curpix;
+
+	if (se401->cheight % 4)
+		blineoffset = 1;
+	bline = frame->curpix / se401->cwidth+blineoffset;
+
+	curline = frame->curline;
+	nextline = curline + linelength;
+	if (nextline >= framedata+datasize * 3)
+		nextline = curline;
 	while (len) {
-		if (frame->curlinepix>=width) {
-			frame->curlinepix-=width;
-			bline=frame->curpix/width+blineoffset;
-			curline+=linelength*2;
-			nextline+=linelength*2;
-			if (curline >= framedata+datasize*3) {
+		if (frame->curlinepix >= width) {
+			frame->curlinepix -= width;
+			bline = frame->curpix / width + blineoffset;
+			curline += linelength*2;
+			nextline += linelength*2;
+			if (curline >= framedata+datasize * 3) {
 				frame->curlinepix++;
-				curline-=3;
-				nextline-=3;
+				curline -= 3;
+				nextline -= 3;
 				len--;
 				data++;
 				frame->curpix++;
 			}
 			if (nextline >= framedata+datasize*3)
-				nextline=curline;
+				nextline = curline;
 		}
-		if ((bline&1)) {
-			if ((frame->curlinepix&1)) {
-				*(curline+2)=*data;
-				*(curline-1)=*data;
-				*(nextline+2)=*data;
-				*(nextline-1)=*data;
+		if (bline & 1) {
+			if (frame->curlinepix & 1) {
+				*(curline + 2) = *data;
+				*(curline - 1) = *data;
+				*(nextline + 2) = *data;
+				*(nextline - 1) = *data;
 			} else {
-				*(curline+1)=
-					(*(curline+1)+*data)/2;
-				*(curline-2)=
-					(*(curline-2)+*data)/2;
-				*(nextline+1)=*data;
-				*(nextline-2)=*data;
+				*(curline + 1) =
+					(*(curline + 1) + *data) / 2;
+				*(curline-2) =
+					(*(curline - 2) + *data) / 2;
+				*(nextline + 1) = *data;
+				*(nextline - 2) = *data;
 			}
 		} else {
-			if ((frame->curlinepix&1)) {
-				*(curline+1)=
-					(*(curline+1)+*data)/2;
-				*(curline-2)=
-					(*(curline-2)+*data)/2;
-				*(nextline+1)=*data;
-				*(nextline-2)=*data;
+			if (frame->curlinepix & 1) {
+				*(curline + 1) =
+					(*(curline + 1) + *data) / 2;
+				*(curline - 2) =
+					(*(curline - 2) + *data) / 2;
+				*(nextline + 1) = *data;
+				*(nextline - 2) = *data;
 			} else {
-				*curline=*data;
-				*(curline-3)=*data;
-				*nextline=*data;
-				*(nextline-3)=*data;
+				*curline = *data;
+				*(curline - 3) = *data;
+				*nextline = *data;
+				*(nextline - 3) = *data;
 			}
 		}
 		frame->curlinepix++;
-		curline-=3;
-		nextline-=3;
+		curline -= 3;
+		nextline -= 3;
 		len--;
 		data++;
 		frame->curpix++;
 	}
-	frame->curline=curline;
+	frame->curline = curline;
 
-	if (frame->curpix>=datasize) {
+	if (frame->curpix >= datasize) {
 		/* Fix the top line */
-		framedata+=linelength;
-		for (i=0; i<linelength; i++) {
+		framedata += linelength;
+		for (i = 0; i < linelength; i++) {
 			framedata--;
-			*framedata=*(framedata+linelength);
+			*framedata = *(framedata + linelength);
 		}
 		/* Fix the left side (green is already present) */
-		for (i=0; i<se401->cheight; i++) {
-			*framedata=*(framedata+3);
-			*(framedata+1)=*(framedata+4);
-			*(framedata+2)=*(framedata+5);
-			framedata+=linelength;
+		for (i = 0; i < se401->cheight; i++) {
+			*framedata = *(framedata + 3);
+			*(framedata + 1) = *(framedata + 4);
+			*(framedata + 2) = *(framedata + 5);
+			framedata += linelength;
 		}
-		frame->curpix=0;
-		frame->grabstate=FRAME_DONE;
+		frame->curpix = 0;
+		frame->grabstate = FRAME_DONE;
 		se401->framecount++;
 		se401->readcount++;
-		if (se401->frame[(se401->curframe+1)&(SE401_NUMFRAMES-1)].grabstate==FRAME_READY) {
-			se401->curframe=(se401->curframe+1) & (SE401_NUMFRAMES-1);
+		if (se401->frame[(se401->curframe + 1) &
+		    (SE401_NUMFRAMES - 1)].grabstate == FRAME_READY) {
+			se401->curframe = (se401->curframe+1) &
+							(SE401_NUMFRAMES-1);
 		}
 	}
 }
@@ -845,72 +853,76 @@ static inline void decode_bayer (struct usb_se401 *se401, struct se401_scratch *
 static int se401_newframe(struct usb_se401 *se401, int framenr)
 {
 	DECLARE_WAITQUEUE(wait, current);
-	int errors=0;
+	int errors = 0;
 
 	while (se401->streaming &&
-	    (se401->frame[framenr].grabstate==FRAME_READY ||
-	     se401->frame[framenr].grabstate==FRAME_GRABBING) ) {
-		if(!se401->frame[framenr].curpix) {
+	    (se401->frame[framenr].grabstate == FRAME_READY ||
+	     se401->frame[framenr].grabstate == FRAME_GRABBING)) {
+		if (!se401->frame[framenr].curpix)
 			errors++;
-		}
+
 		wait_interruptible(
-		    se401->scratch[se401->scratch_use].state!=BUFFER_READY,
-		    &se401->wq,
-		    &wait
-		);
+		    se401->scratch[se401->scratch_use].state != BUFFER_READY,
+						    &se401->wq, &wait);
 		if (se401->nullpackets > SE401_MAX_NULLPACKETS) {
-			se401->nullpackets=0;
+			se401->nullpackets = 0;
 			dev_info(&se401->dev->dev,
-				 "too many null length packets, restarting capture\n");
+			 "too many null length packets, restarting capture\n");
 			se401_stop_stream(se401);
 			se401_start_stream(se401);
 		} else {
-			if (se401->scratch[se401->scratch_use].state!=BUFFER_READY) {
-				se401->frame[framenr].grabstate=FRAME_ERROR;
+			if (se401->scratch[se401->scratch_use].state !=
+								BUFFER_READY) {
+				se401->frame[framenr].grabstate = FRAME_ERROR;
 				return -EIO;
 			}
-			se401->scratch[se401->scratch_use].state=BUFFER_BUSY;
-			if (se401->format==FMT_JANGGU) {
-				decode_JangGu(se401, &se401->scratch[se401->scratch_use]);
-			} else {
-				decode_bayer(se401, &se401->scratch[se401->scratch_use]);
-			}
-			se401->scratch[se401->scratch_use].state=BUFFER_UNUSED;
+			se401->scratch[se401->scratch_use].state = BUFFER_BUSY;
+			if (se401->format == FMT_JANGGU)
+				decode_JangGu(se401,
+					&se401->scratch[se401->scratch_use]);
+			else
+				decode_bayer(se401,
+					&se401->scratch[se401->scratch_use]);
+
+			se401->scratch[se401->scratch_use].state =
+							BUFFER_UNUSED;
 			se401->scratch_use++;
-			if (se401->scratch_use>=SE401_NUMSCRATCH)
-				se401->scratch_use=0;
+			if (se401->scratch_use >= SE401_NUMSCRATCH)
+				se401->scratch_use = 0;
 			if (errors > SE401_MAX_ERRORS) {
-				errors=0;
+				errors = 0;
 				dev_info(&se401->dev->dev,
-					 "too many errors, restarting capture\n");
+				      "too many errors, restarting capture\n");
 				se401_stop_stream(se401);
 				se401_start_stream(se401);
 			}
 		}
 	}
 
-	if (se401->frame[framenr].grabstate==FRAME_DONE)
+	if (se401->frame[framenr].grabstate == FRAME_DONE)
 		if (se401->enhance)
-			enhance_picture(se401->frame[framenr].data, se401->cheight*se401->cwidth*3);
+			enhance_picture(se401->frame[framenr].data,
+					se401->cheight * se401->cwidth * 3);
 	return 0;
 }
 
-static void usb_se401_remove_disconnected (struct usb_se401 *se401)
+static void usb_se401_remove_disconnected(struct usb_se401 *se401)
 {
 	int i;
 
 	se401->dev = NULL;
 
-	for (i=0; i<SE401_NUMSBUF; i++)
+	for (i = 0; i < SE401_NUMSBUF; i++)
 		if (se401->urb[i]) {
 			usb_kill_urb(se401->urb[i]);
 			usb_free_urb(se401->urb[i]);
 			se401->urb[i] = NULL;
 			kfree(se401->sbuf[i].data);
 		}
-	for (i=0; i<SE401_NUMSCRATCH; i++) {
+
+	for (i = 0; i < SE401_NUMSCRATCH; i++)
 		kfree(se401->scratch[i].data);
-	}
+
 	if (se401->inturb) {
 		usb_kill_urb(se401->inturb);
 		usb_free_urb(se401->inturb);
@@ -965,11 +977,11 @@ static int se401_close(struct file *file)
 		dev_info(&se401->dev->dev, "device unregistered\n");
 		usb_se401_remove_disconnected(se401);
 	} else {
-		for (i=0; i<SE401_NUMFRAMES; i++)
-			se401->frame[i].grabstate=FRAME_UNUSED;
+		for (i = 0; i < SE401_NUMFRAMES; i++)
+			se401->frame[i].grabstate = FRAME_UNUSED;
 		if (se401->streaming)
 			se401_stop_stream(se401);
-		se401->user=0;
+		se401->user = 0;
 	}
 	file->private_data = NULL;
 	return 0;
@@ -1065,7 +1077,7 @@ static long se401_do_ioctl(struct file *file, unsigned int cmd, void *arg)
 		memset(vm, 0, sizeof(*vm));
 		vm->size = SE401_NUMFRAMES * se401->maxframesize;
 		vm->frames = SE401_NUMFRAMES;
-		for (i=0; i<SE401_NUMFRAMES; i++)
+		for (i = 0; i < SE401_NUMFRAMES; i++)
 			vm->offsets[i] = se401->maxframesize * i;
 		return 0;
 	}
@@ -1083,16 +1095,16 @@ static long se401_do_ioctl(struct file *file, unsigned int cmd, void *arg)
 		/* Is this according to the v4l spec??? */
 		if (se401_set_size(se401, vm->width, vm->height))
 			return -EINVAL;
-		se401->frame[vm->frame].grabstate=FRAME_READY;
+		se401->frame[vm->frame].grabstate = FRAME_READY;
 
 		if (!se401->streaming)
 			se401_start_stream(se401);
 
 		/* Set the picture properties */
-		if (se401->framecount==0)
+		if (se401->framecount == 0)
 			se401_send_pict(se401);
 		/* Calibrate the reset level after a few frames. */
-		if (se401->framecount%20==1)
+		if (se401->framecount % 20 == 1)
 			se401_auto_resetlevel(se401);
 
 		return 0;
@@ -1100,13 +1112,13 @@ static long se401_do_ioctl(struct file *file, unsigned int cmd, void *arg)
 	case VIDIOCSYNC:
 	{
 		int *frame = arg;
-		int ret=0;
+		int ret = 0;
 
-		if(*frame <0 || *frame >= SE401_NUMFRAMES)
+		if (*frame < 0 || *frame >= SE401_NUMFRAMES)
 			return -EINVAL;
 
-		ret=se401_newframe(se401, *frame);
-		se401->frame[*frame].grabstate=FRAME_UNUSED;
+		ret = se401_newframe(se401, *frame);
+		se401->frame[*frame].grabstate = FRAME_UNUSED;
 		return ret;
 	}
 	case VIDIOCGFBUF:
@@ -1147,36 +1159,36 @@ static long se401_ioctl(struct file *file,
 static ssize_t se401_read(struct file *file, char __user *buf,
 		     size_t count, loff_t *ppos)
 {
-	int realcount=count, ret=0;
+	int realcount = count, ret = 0;
 	struct video_device *dev = file->private_data;
 	struct usb_se401 *se401 = (struct usb_se401 *)dev;
 
 
-	if (se401->dev == NULL)
+	if (se401->dev ==  NULL)
 		return -EIO;
 	if (realcount > se401->cwidth*se401->cheight*3)
-		realcount=se401->cwidth*se401->cheight*3;
+		realcount = se401->cwidth*se401->cheight*3;
 
 	/* Shouldn't happen: */
-	if (se401->frame[0].grabstate==FRAME_GRABBING)
+	if (se401->frame[0].grabstate == FRAME_GRABBING)
 		return -EBUSY;
-	se401->frame[0].grabstate=FRAME_READY;
-	se401->frame[1].grabstate=FRAME_UNUSED;
-	se401->curframe=0;
+	se401->frame[0].grabstate = FRAME_READY;
+	se401->frame[1].grabstate = FRAME_UNUSED;
+	se401->curframe = 0;
 
 	if (!se401->streaming)
 		se401_start_stream(se401);
 
 	/* Set the picture properties */
-	if (se401->framecount==0)
+	if (se401->framecount == 0)
 		se401_send_pict(se401);
 	/* Calibrate the reset level after a few frames. */
-	if (se401->framecount%20==1)
+	if (se401->framecount%20 == 1)
 		se401_auto_resetlevel(se401);
 
-	ret=se401_newframe(se401, 0);
+	ret = se401_newframe(se401, 0);
 
-	se401->frame[0].grabstate=FRAME_UNUSED;
+	se401->frame[0].grabstate = FRAME_UNUSED;
 	if (ret)
 		return ret;
 	if (copy_to_user(buf, se401->frame[0].data, realcount))
@@ -1195,11 +1207,12 @@ static int se401_mmap(struct file *file, struct vm_area_struct *vma)
 
 	mutex_lock(&se401->lock);
 
-	if (se401->dev == NULL) {
+	if (se401->dev ==  NULL) {
 		mutex_unlock(&se401->lock);
 		return -EIO;
 	}
-	if (size > (((SE401_NUMFRAMES * se401->maxframesize) + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1))) {
+	if (size > (((SE401_NUMFRAMES * se401->maxframesize) + PAGE_SIZE - 1)
+							& ~(PAGE_SIZE - 1))) {
 		mutex_unlock(&se401->lock);
 		return -EINVAL;
 	}
@@ -1210,10 +1223,10 @@ static int se401_mmap(struct file *file, struct vm_area_struct *vma)
 			mutex_unlock(&se401->lock);
 			return -EAGAIN;
 		}
-		start += PAGE_SIZE;
-		pos += PAGE_SIZE;
+		start +=  PAGE_SIZE;
+		pos +=  PAGE_SIZE;
 		if (size > PAGE_SIZE)
-			size -= PAGE_SIZE;
+			size -=  PAGE_SIZE;
 		else
 			size = 0;
 	}
@@ -1223,7 +1236,7 @@ static int se401_mmap(struct file *file, struct vm_area_struct *vma)
 }
 
 static const struct v4l2_file_operations se401_fops = {
-	.owner =	THIS_MODULE,
+	.owner  = 	THIS_MODULE,
 	.open =         se401_open,
 	.release =      se401_close,
 	.read =         se401_read,
@@ -1241,71 +1254,76 @@ static struct video_device se401_template = {
 /***************************/
 static int se401_init(struct usb_se401 *se401, int button)
 {
-	int i=0, rc;
+	int i = 0, rc;
 	unsigned char cp[0x40];
 	char temp[200];
+	int slen;
 
 	/* led on */
 	se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 1, NULL, 0);
 
 	/* get camera descriptor */
-	rc=se401_sndctrl(0, se401, SE401_REQ_GET_CAMERA_DESCRIPTOR, 0, cp, sizeof(cp));
-	if (cp[1]!=0x41) {
+	rc = se401_sndctrl(0, se401, SE401_REQ_GET_CAMERA_DESCRIPTOR, 0,
+							cp, sizeof(cp));
+	if (cp[1] != 0x41) {
 		err("Wrong descriptor type");
 		return 1;
 	}
-	sprintf (temp, "ExtraFeatures: %d", cp[3]);
+	slen = snprintf(temp, 200, "ExtraFeatures: %d", cp[3]);
 
-	se401->sizes=cp[4]+cp[5]*256;
-	se401->width=kmalloc(se401->sizes*sizeof(int), GFP_KERNEL);
+	se401->sizes = cp[4] + cp[5] * 256;
+	se401->width = kmalloc(se401->sizes*sizeof(int), GFP_KERNEL);
 	if (!se401->width)
 		return 1;
-	se401->height=kmalloc(se401->sizes*sizeof(int), GFP_KERNEL);
+	se401->height = kmalloc(se401->sizes*sizeof(int), GFP_KERNEL);
 	if (!se401->height) {
 		kfree(se401->width);
 		return 1;
 	}
-	for (i=0; i<se401->sizes; i++) {
-		    se401->width[i]=cp[6+i*4+0]+cp[6+i*4+1]*256;
-		    se401->height[i]=cp[6+i*4+2]+cp[6+i*4+3]*256;
+	for (i = 0; i < se401->sizes; i++) {
+		se401->width[i] = cp[6 + i * 4 + 0] + cp[6 + i*4 + 1] * 256;
+		se401->height[i] = cp[6 + i * 4 + 2] + cp[6 + i * 4 + 3] * 256;
 	}
-	sprintf (temp, "%s Sizes:", temp);
-	for (i=0; i<se401->sizes; i++) {
-		sprintf(temp, "%s %dx%d", temp, se401->width[i], se401->height[i]);
+	slen += snprintf(temp + slen, 200 - slen, " Sizes:");
+	for (i = 0; i < se401->sizes; i++) {
+		slen +=  snprintf(temp + slen, 200 - slen,
+			" %dx%d", se401->width[i], se401->height[i]);
 	}
 	dev_info(&se401->dev->dev, "%s\n", temp);
-	se401->maxframesize=se401->width[se401->sizes-1]*se401->height[se401->sizes-1]*3;
+	se401->maxframesize = se401->width[se401->sizes-1] *
+					se401->height[se401->sizes - 1] * 3;
 
-	rc=se401_sndctrl(0, se401, SE401_REQ_GET_WIDTH, 0, cp, sizeof(cp));
-	se401->cwidth=cp[0]+cp[1]*256;
-	rc=se401_sndctrl(0, se401, SE401_REQ_GET_HEIGHT, 0, cp, sizeof(cp));
-	se401->cheight=cp[0]+cp[1]*256;
+	rc = se401_sndctrl(0, se401, SE401_REQ_GET_WIDTH, 0, cp, sizeof(cp));
+	se401->cwidth = cp[0]+cp[1]*256;
+	rc = se401_sndctrl(0, se401, SE401_REQ_GET_HEIGHT, 0, cp, sizeof(cp));
+	se401->cheight = cp[0]+cp[1]*256;
 
 	if (!(cp[2] & SE401_FORMAT_BAYER)) {
 		err("Bayer format not supported!");
 		return 1;
 	}
 	/* set output mode (BAYER) */
-	se401_sndctrl(1, se401, SE401_REQ_SET_OUTPUT_MODE, SE401_FORMAT_BAYER, NULL, 0);
+	se401_sndctrl(1, se401, SE401_REQ_SET_OUTPUT_MODE,
+						SE401_FORMAT_BAYER, NULL, 0);
 
-	rc=se401_sndctrl(0, se401, SE401_REQ_GET_BRT, 0, cp, sizeof(cp));
-	se401->brightness=cp[0]+cp[1]*256;
+	rc = se401_sndctrl(0, se401, SE401_REQ_GET_BRT, 0, cp, sizeof(cp));
+	se401->brightness = cp[0]+cp[1]*256;
 	/* some default values */
-	se401->resetlevel=0x2d;
-	se401->rgain=0x20;
-	se401->ggain=0x20;
-	se401->bgain=0x20;
+	se401->resetlevel = 0x2d;
+	se401->rgain = 0x20;
+	se401->ggain = 0x20;
+	se401->bgain = 0x20;
 	se401_set_exposure(se401, 20000);
-	se401->palette=VIDEO_PALETTE_RGB24;
-	se401->enhance=1;
-	se401->dropped=0;
-	se401->error=0;
-	se401->framecount=0;
-	se401->readcount=0;
+	se401->palette = VIDEO_PALETTE_RGB24;
+	se401->enhance = 1;
+	se401->dropped = 0;
+	se401->error = 0;
+	se401->framecount = 0;
+	se401->readcount = 0;
 
 	/* Start interrupt transfers for snapshot button */
 	if (button) {
-		se401->inturb=usb_alloc_urb(0, GFP_KERNEL);
+		se401->inturb = usb_alloc_urb(0, GFP_KERNEL);
 		if (!se401->inturb) {
 			dev_info(&se401->dev->dev,
 				 "Allocation of inturb failed\n");
@@ -1323,7 +1341,7 @@ static int se401_init(struct usb_se401 *se401, int button)
 			return 1;
 		}
 	} else
-		se401->inturb=NULL;
+		se401->inturb = NULL;
 
 	/* Flash the led */
 	se401_sndctrl(1, se401, SE401_REQ_CAMERA_POWER, 1, NULL, 0);
@@ -1340,8 +1358,8 @@ static int se401_probe(struct usb_interface *intf,
 	struct usb_device *dev = interface_to_usbdev(intf);
 	struct usb_interface_descriptor *interface;
 	struct usb_se401 *se401;
-	char *camera_name=NULL;
-	int button=1;
+	char *camera_name = NULL;
+	int button = 1;
 
 	/* We don't handle multi-config cameras */
 	if (dev->descriptor.bNumConfigurations != 1)
@@ -1350,22 +1368,22 @@ static int se401_probe(struct usb_interface *intf,
 	interface = &intf->cur_altsetting->desc;
 
 	/* Is it an se401? */
-	if (le16_to_cpu(dev->descriptor.idVendor) == 0x03e8 &&
-	    le16_to_cpu(dev->descriptor.idProduct) == 0x0004) {
-		camera_name="Endpoints/Aox SE401";
-	} else if (le16_to_cpu(dev->descriptor.idVendor) == 0x0471 &&
-	    le16_to_cpu(dev->descriptor.idProduct) == 0x030b) {
-		camera_name="Philips PCVC665K";
-	} else if (le16_to_cpu(dev->descriptor.idVendor) == 0x047d &&
-	    le16_to_cpu(dev->descriptor.idProduct) == 0x5001) {
-		camera_name="Kensington VideoCAM 67014";
-	} else if (le16_to_cpu(dev->descriptor.idVendor) == 0x047d &&
-	    le16_to_cpu(dev->descriptor.idProduct) == 0x5002) {
-		camera_name="Kensington VideoCAM 6701(5/7)";
-	} else if (le16_to_cpu(dev->descriptor.idVendor) == 0x047d &&
-	    le16_to_cpu(dev->descriptor.idProduct) == 0x5003) {
-		camera_name="Kensington VideoCAM 67016";
-		button=0;
+	if (le16_to_cpu(dev->descriptor.idVendor) ==  0x03e8 &&
+	    le16_to_cpu(dev->descriptor.idProduct) ==  0x0004) {
+		camera_name = "Endpoints/Aox SE401";
+	} else if (le16_to_cpu(dev->descriptor.idVendor) ==  0x0471 &&
+	    le16_to_cpu(dev->descriptor.idProduct) ==  0x030b) {
+		camera_name = "Philips PCVC665K";
+	} else if (le16_to_cpu(dev->descriptor.idVendor) ==  0x047d &&
+	    le16_to_cpu(dev->descriptor.idProduct) ==  0x5001) {
+		camera_name = "Kensington VideoCAM 67014";
+	} else if (le16_to_cpu(dev->descriptor.idVendor) ==  0x047d &&
+	    le16_to_cpu(dev->descriptor.idProduct) ==  0x5002) {
+		camera_name = "Kensington VideoCAM 6701(5/7)";
+	} else if (le16_to_cpu(dev->descriptor.idVendor) ==  0x047d &&
+	    le16_to_cpu(dev->descriptor.idProduct) ==  0x5003) {
+		camera_name = "Kensington VideoCAM 67016";
+		button = 0;
 	} else
 		return -ENODEV;
 
@@ -1378,7 +1396,8 @@ static int se401_probe(struct usb_interface *intf,
 	/* We found one */
 	dev_info(&intf->dev, "SE401 camera found: %s\n", camera_name);
 
-	if ((se401 = kzalloc(sizeof(*se401), GFP_KERNEL)) == NULL) {
+	se401 = kzalloc(sizeof(*se401), GFP_KERNEL);
+	if (se401 ==  NULL) {
 		err("couldn't kmalloc se401 struct");
 		return -ENOMEM;
 	}
@@ -1396,12 +1415,14 @@ static int se401_probe(struct usb_interface *intf,
 	}
 
 	memcpy(&se401->vdev, &se401_template, sizeof(se401_template));
-	memcpy(se401->vdev.name, se401->camera_name, strlen(se401->camera_name));
+	memcpy(se401->vdev.name, se401->camera_name,
+					strlen(se401->camera_name));
 	init_waitqueue_head(&se401->wq);
 	mutex_init(&se401->lock);
 	wmb();
 
-	if (video_register_device(&se401->vdev, VFL_TYPE_GRABBER, video_nr) < 0) {
+	if (video_register_device(&se401->vdev,
+					VFL_TYPE_GRABBER, video_nr) < 0) {
 		kfree(se401);
 		err("video_register_device failed");
 		return -EIO;
@@ -1409,20 +1430,20 @@ static int se401_probe(struct usb_interface *intf,
 	dev_info(&intf->dev, "registered new video device: video%d\n",
 		 se401->vdev.num);
 
-	usb_set_intfdata (intf, se401);
+	usb_set_intfdata(intf, se401);
 	return 0;
 }
 
 static void se401_disconnect(struct usb_interface *intf)
 {
-	struct usb_se401 *se401 = usb_get_intfdata (intf);
+	struct usb_se401 *se401 = usb_get_intfdata(intf);
 
-	usb_set_intfdata (intf, NULL);
+	usb_set_intfdata(intf, NULL);
 	if (se401) {
 		video_unregister_device(&se401->vdev);
-		if (!se401->user){
+		if (!se401->user)
 			usb_se401_remove_disconnected(se401);
-		} else {
+		else {
 			se401->frame[0].grabstate = FRAME_ERROR;
 			se401->frame[0].grabstate = FRAME_ERROR;
 
@@ -1435,10 +1456,10 @@ static void se401_disconnect(struct usb_interface *intf)
 }
 
 static struct usb_driver se401_driver = {
-	.name		= "se401",
-	.id_table	= device_table,
-	.probe		= se401_probe,
-	.disconnect	= se401_disconnect,
+	.name		 =  "se401",
+	.id_table	 =  device_table,
+	.probe		 =  se401_probe,
+	.disconnect	 =  se401_disconnect,
 };
 
 
@@ -1451,9 +1472,10 @@ static struct usb_driver se401_driver = {
 
 static int __init usb_se401_init(void)
 {
-	printk(KERN_INFO "SE401 usb camera driver version %s registering\n", version);
+	printk(KERN_INFO "SE401 usb camera driver version %s registering\n",
+								version);
 	if (flickerless)
-		if (flickerless!=50 && flickerless!=60) {
+		if (flickerless != 50 && flickerless != 60) {
 			printk(KERN_ERR "Invallid flickerless value, use 0, 50 or 60.\n");
 			return -1;
 	}