Merge commit 'linus/master' into bkl/core

Merge reason: The staging tree has introduced the easycap
driver lately. We need the latest updates to pushdown the
bkl in its ioctl helper.

4 files changed, 22 insertions, 31 deletions

diff --git a/drivers/isdn/i4l/isdn_common.c b/drivers/isdn/i4l/isdn_common.c
index a44cdb492ea9..15632bd2f643 100644
--- a/drivers/isdn/i4l/isdn_common.c
+++ b/drivers/isdn/i4l/isdn_common.c
@@ -17,7 +17,7 @@
 #include <linux/slab.h>
 #include <linux/vmalloc.h>
 #include <linux/isdn.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include "isdn_common.h"
 #include "isdn_tty.h"
 #include "isdn_net.h"
@@ -42,6 +42,7 @@ MODULE_LICENSE("GPL");
 
 isdn_dev *dev;
 
+static DEFINE_MUTEX(isdn_mutex);
 static char *isdn_revision = "$Revision: 1.1.2.3 $";
 
 extern char *isdn_net_revision;
@@ -1070,7 +1071,7 @@ isdn_read(struct file *file, char __user *buf, size_t count, loff_t * off)
 	int retval;
 	char *p;
 
-	lock_kernel();
+	mutex_lock(&isdn_mutex);
 	if (minor == ISDN_MINOR_STATUS) {
 		if (!file->private_data) {
 			if (file->f_flags & O_NONBLOCK) {
@@ -1163,7 +1164,7 @@ isdn_read(struct file *file, char __user *buf, size_t count, loff_t * off)
 #endif
 	retval = -ENODEV;
  out:
-	unlock_kernel();
+	mutex_unlock(&isdn_mutex);
 	return retval;
 }
 
@@ -1180,7 +1181,7 @@ isdn_write(struct file *file, const char __user *buf, size_t count, loff_t * off
 	if (!dev->drivers)
 		return -ENODEV;
 
-	lock_kernel();
+	mutex_lock(&isdn_mutex);
 	if (minor <= ISDN_MINOR_BMAX) {
 		printk(KERN_WARNING "isdn_write minor %d obsolete!\n", minor);
 		drvidx = isdn_minor2drv(minor);
@@ -1225,7 +1226,7 @@ isdn_write(struct file *file, const char __user *buf, size_t count, loff_t * off
 #endif
 	retval = -ENODEV;
  out:
-	unlock_kernel();
+	mutex_unlock(&isdn_mutex);
 	return retval;
 }
 
@@ -1236,7 +1237,7 @@ isdn_poll(struct file *file, poll_table * wait)
 	unsigned int minor = iminor(file->f_path.dentry->d_inode);
 	int drvidx = isdn_minor2drv(minor - ISDN_MINOR_CTRL);
 
-	lock_kernel();
+	mutex_lock(&isdn_mutex);
 	if (minor == ISDN_MINOR_STATUS) {
 		poll_wait(file, &(dev->info_waitq), wait);
 		/* mask = POLLOUT | POLLWRNORM; */
@@ -1266,7 +1267,7 @@ isdn_poll(struct file *file, poll_table * wait)
 #endif
 	mask = POLLERR;
  out:
-	unlock_kernel();
+	mutex_unlock(&isdn_mutex);
 	return mask;
 }
 
@@ -1727,9 +1728,9 @@ isdn_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
 	int ret;
 
-	lock_kernel();
+	mutex_lock(&isdn_mutex);
 	ret = isdn_ioctl(file, cmd, arg);
-	unlock_kernel();
+	mutex_unlock(&isdn_mutex);
 
 	return ret;
 }
@@ -1745,7 +1746,7 @@ isdn_open(struct inode *ino, struct file *filep)
 	int chidx;
 	int retval = -ENODEV;
 
-	lock_kernel();
+	mutex_lock(&isdn_mutex);
 	if (minor == ISDN_MINOR_STATUS) {
 		infostruct *p;
 
@@ -1796,7 +1797,7 @@ isdn_open(struct inode *ino, struct file *filep)
 #endif
  out:
 	nonseekable_open(ino, filep);
-	unlock_kernel();
+	mutex_unlock(&isdn_mutex);
 	return retval;
 }
 
@@ -1805,7 +1806,7 @@ isdn_close(struct inode *ino, struct file *filep)
 {
 	uint minor = iminor(ino);
 
-	lock_kernel();
+	mutex_lock(&isdn_mutex);
 	if (minor == ISDN_MINOR_STATUS) {
 		infostruct *p = dev->infochain;
 		infostruct *q = NULL;
@@ -1839,7 +1840,7 @@ isdn_close(struct inode *ino, struct file *filep)
 #endif
 
  out:
-	unlock_kernel();
+	mutex_unlock(&isdn_mutex);
 	return 0;
 }
 
diff --git a/drivers/isdn/i4l/isdn_net.c b/drivers/isdn/i4l/isdn_net.c
index 8c85d1e88cc6..26d44c3ca1d8 100644
--- a/drivers/isdn/i4l/isdn_net.c
+++ b/drivers/isdn/i4l/isdn_net.c
@@ -2924,16 +2924,17 @@ isdn_net_getcfg(isdn_net_ioctl_cfg * cfg)
 		cfg->dialtimeout = lp->dialtimeout >= 0 ? lp->dialtimeout / HZ : -1;
 		cfg->dialwait = lp->dialwait / HZ;
 		if (lp->slave) {
-			if (strlen(lp->slave->name) > 8)
+			if (strlen(lp->slave->name) >= 10)
 				strcpy(cfg->slave, "too-long");
 			else
 				strcpy(cfg->slave, lp->slave->name);
 		} else
 			cfg->slave[0] = '\0';
 		if (lp->master) {
-			if (strlen(lp->master->name) > 8)
+			if (strlen(lp->master->name) >= 10)
 				strcpy(cfg->master, "too-long");
-			strcpy(cfg->master, lp->master->name);
+			else
+				strcpy(cfg->master, lp->master->name);
 		} else
 			cfg->master[0] = '\0';
 		return 0;
diff --git a/drivers/isdn/i4l/isdn_ppp.c b/drivers/isdn/i4l/isdn_ppp.c
index f37b8f68d0aa..fe824e0cbb25 100644
--- a/drivers/isdn/i4l/isdn_ppp.c
+++ b/drivers/isdn/i4l/isdn_ppp.c
@@ -449,14 +449,9 @@ static int get_filter(void __user *arg, struct sock_filter **p)
 
 	/* uprog.len is unsigned short, so no overflow here */
 	len = uprog.len * sizeof(struct sock_filter);
-	code = kmalloc(len, GFP_KERNEL);
-	if (code == NULL)
-		return -ENOMEM;
-
-	if (copy_from_user(code, uprog.filter, len)) {
-		kfree(code);
-		return -EFAULT;
-	}
+	code = memdup_user(uprog.filter, len);
+	if (IS_ERR(code))
+		return PTR_ERR(code);
 
 	err = sk_chk_filter(code, uprog.len);
 	if (err) {
@@ -482,7 +477,7 @@ isdn_ppp_ioctl(int min, struct file *file, unsigned int cmd, unsigned long arg)
 	struct isdn_ppp_comp_data data;
 	void __user *argp = (void __user *)arg;
 
-	is = (struct ippp_struct *) file->private_data;
+	is = file->private_data;
 	lp = is->lp;
 
 	if (is->debug & 0x1)
diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c
index fc8454d2eea5..51dc60da333b 100644
--- a/drivers/isdn/i4l/isdn_tty.c
+++ b/drivers/isdn/i4l/isdn_tty.c
@@ -2636,12 +2636,6 @@ isdn_tty_modem_result(int code, modem_info * info)
 		if ((info->flags & ISDN_ASYNC_CLOSING) || (!info->tty)) {
 			return;
 		}
-#ifdef CONFIG_ISDN_AUDIO
-		if ( !info->vonline )
-			tty_ldisc_flush(info->tty);
-#else
-		tty_ldisc_flush(info->tty);
-#endif
 		if ((info->flags & ISDN_ASYNC_CHECK_CD) &&
 		    (!((info->flags & ISDN_ASYNC_CALLOUT_ACTIVE) &&
 		       (info->flags & ISDN_ASYNC_CALLOUT_NOHUP)))) {