diff options
Diffstat (limited to 'drivers/media/usb/pvrusb2/pvrusb2-io.c')
| -rw-r--r-- | drivers/media/usb/pvrusb2/pvrusb2-io.c | 127 |
1 files changed, 62 insertions, 65 deletions
diff --git a/drivers/media/usb/pvrusb2/pvrusb2-io.c b/drivers/media/usb/pvrusb2/pvrusb2-io.c index e3103ecd4828..6d153fc23ec2 100644 --- a/drivers/media/usb/pvrusb2/pvrusb2-io.c +++ b/drivers/media/usb/pvrusb2/pvrusb2-io.c @@ -12,10 +12,6 @@ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * */ #include "pvrusb2-io.h" @@ -37,13 +33,13 @@ static const char *pvr2_buffer_state_decode(enum pvr2_buffer_state); if ((bp)->signature != BUFFER_SIG) { \ pvr2_trace(PVR2_TRACE_ERROR_LEGS, \ "Buffer %p is bad at %s:%d", \ - (bp),__FILE__,__LINE__); \ - pvr2_buffer_describe(bp,"BadSig"); \ + (bp), __FILE__, __LINE__); \ + pvr2_buffer_describe(bp, "BadSig"); \ BUG(); \ } \ } while (0) #else -#define BUFFER_CHECK(bp) do {} while(0) +#define BUFFER_CHECK(bp) do {} while (0) #endif struct pvr2_stream { @@ -110,7 +106,7 @@ static const char *pvr2_buffer_state_decode(enum pvr2_buffer_state st) } #ifdef SANITY_CHECK_BUFFERS -static void pvr2_buffer_describe(struct pvr2_buffer *bp,const char *msg) +static void pvr2_buffer_describe(struct pvr2_buffer *bp, const char *msg) { pvr2_trace(PVR2_TRACE_INFO, "buffer%s%s %p state=%s id=%d status=%d stream=%p purb=%p sig=0x%x", @@ -156,7 +152,7 @@ static void pvr2_buffer_remove(struct pvr2_buffer *bp) (*bcnt) -= ccnt; pvr2_trace(PVR2_TRACE_BUF_FLOW, "/*---TRACE_FLOW---*/ bufferPool %8s dec cap=%07d cnt=%02d", - pvr2_buffer_state_decode(bp->state),*bcnt,*cnt); + pvr2_buffer_state_decode(bp->state), *bcnt, *cnt); bp->state = pvr2_buffer_state_none; } @@ -171,9 +167,9 @@ static void pvr2_buffer_set_none(struct pvr2_buffer *bp) bp, pvr2_buffer_state_decode(bp->state), pvr2_buffer_state_decode(pvr2_buffer_state_none)); - spin_lock_irqsave(&sp->list_lock,irq_flags); + spin_lock_irqsave(&sp->list_lock, irq_flags); pvr2_buffer_remove(bp); - spin_unlock_irqrestore(&sp->list_lock,irq_flags); + spin_unlock_irqrestore(&sp->list_lock, irq_flags); } static int pvr2_buffer_set_ready(struct pvr2_buffer *bp) @@ -188,18 +184,18 @@ static int pvr2_buffer_set_ready(struct pvr2_buffer *bp) bp, pvr2_buffer_state_decode(bp->state), pvr2_buffer_state_decode(pvr2_buffer_state_ready)); - spin_lock_irqsave(&sp->list_lock,irq_flags); + spin_lock_irqsave(&sp->list_lock, irq_flags); fl = (sp->r_count == 0); pvr2_buffer_remove(bp); - list_add_tail(&bp->list_overhead,&sp->ready_list); + list_add_tail(&bp->list_overhead, &sp->ready_list); bp->state = pvr2_buffer_state_ready; (sp->r_count)++; sp->r_bcount += bp->used_count; pvr2_trace(PVR2_TRACE_BUF_FLOW, "/*---TRACE_FLOW---*/ bufferPool %8s inc cap=%07d cnt=%02d", pvr2_buffer_state_decode(bp->state), - sp->r_bcount,sp->r_count); - spin_unlock_irqrestore(&sp->list_lock,irq_flags); + sp->r_bcount, sp->r_count); + spin_unlock_irqrestore(&sp->list_lock, irq_flags); return fl; } @@ -214,17 +210,17 @@ static void pvr2_buffer_set_idle(struct pvr2_buffer *bp) bp, pvr2_buffer_state_decode(bp->state), pvr2_buffer_state_decode(pvr2_buffer_state_idle)); - spin_lock_irqsave(&sp->list_lock,irq_flags); + spin_lock_irqsave(&sp->list_lock, irq_flags); pvr2_buffer_remove(bp); - list_add_tail(&bp->list_overhead,&sp->idle_list); + list_add_tail(&bp->list_overhead, &sp->idle_list); bp->state = pvr2_buffer_state_idle; (sp->i_count)++; sp->i_bcount += bp->max_count; pvr2_trace(PVR2_TRACE_BUF_FLOW, "/*---TRACE_FLOW---*/ bufferPool %8s inc cap=%07d cnt=%02d", pvr2_buffer_state_decode(bp->state), - sp->i_bcount,sp->i_count); - spin_unlock_irqrestore(&sp->list_lock,irq_flags); + sp->i_bcount, sp->i_count); + spin_unlock_irqrestore(&sp->list_lock, irq_flags); } static void pvr2_buffer_set_queued(struct pvr2_buffer *bp) @@ -238,17 +234,17 @@ static void pvr2_buffer_set_queued(struct pvr2_buffer *bp) bp, pvr2_buffer_state_decode(bp->state), pvr2_buffer_state_decode(pvr2_buffer_state_queued)); - spin_lock_irqsave(&sp->list_lock,irq_flags); + spin_lock_irqsave(&sp->list_lock, irq_flags); pvr2_buffer_remove(bp); - list_add_tail(&bp->list_overhead,&sp->queued_list); + list_add_tail(&bp->list_overhead, &sp->queued_list); bp->state = pvr2_buffer_state_queued; (sp->q_count)++; sp->q_bcount += bp->max_count; pvr2_trace(PVR2_TRACE_BUF_FLOW, "/*---TRACE_FLOW---*/ bufferPool %8s inc cap=%07d cnt=%02d", pvr2_buffer_state_decode(bp->state), - sp->q_bcount,sp->q_count); - spin_unlock_irqrestore(&sp->list_lock,irq_flags); + sp->q_bcount, sp->q_count); + spin_unlock_irqrestore(&sp->list_lock, irq_flags); } static void pvr2_buffer_wipe(struct pvr2_buffer *bp) @@ -262,18 +258,18 @@ static int pvr2_buffer_init(struct pvr2_buffer *bp, struct pvr2_stream *sp, unsigned int id) { - memset(bp,0,sizeof(*bp)); + memset(bp, 0, sizeof(*bp)); bp->signature = BUFFER_SIG; bp->id = id; pvr2_trace(PVR2_TRACE_BUF_POOL, - "/*---TRACE_FLOW---*/ bufferInit %p stream=%p",bp,sp); + "/*---TRACE_FLOW---*/ bufferInit %p stream=%p", bp, sp); bp->stream = sp; bp->state = pvr2_buffer_state_none; INIT_LIST_HEAD(&bp->list_overhead); - bp->purb = usb_alloc_urb(0,GFP_KERNEL); + bp->purb = usb_alloc_urb(0, GFP_KERNEL); if (! bp->purb) return -ENOMEM; #ifdef SANITY_CHECK_BUFFERS - pvr2_buffer_describe(bp,"create"); + pvr2_buffer_describe(bp, "create"); #endif return 0; } @@ -281,7 +277,7 @@ static int pvr2_buffer_init(struct pvr2_buffer *bp, static void pvr2_buffer_done(struct pvr2_buffer *bp) { #ifdef SANITY_CHECK_BUFFERS - pvr2_buffer_describe(bp,"delete"); + pvr2_buffer_describe(bp, "delete"); #endif pvr2_buffer_wipe(bp); pvr2_buffer_set_none(bp); @@ -292,7 +288,7 @@ static void pvr2_buffer_done(struct pvr2_buffer *bp) bp); } -static int pvr2_stream_buffer_count(struct pvr2_stream *sp,unsigned int cnt) +static int pvr2_stream_buffer_count(struct pvr2_stream *sp, unsigned int cnt) { int ret; unsigned int scnt; @@ -312,10 +308,11 @@ static int pvr2_stream_buffer_count(struct pvr2_stream *sp,unsigned int cnt) if (cnt > sp->buffer_total_count) { if (scnt > sp->buffer_slot_count) { struct pvr2_buffer **nb; - nb = kmalloc(scnt * sizeof(*nb),GFP_KERNEL); + + nb = kmalloc_array(scnt, sizeof(*nb), GFP_KERNEL); if (!nb) return -ENOMEM; if (sp->buffer_slot_count) { - memcpy(nb,sp->buffers, + memcpy(nb, sp->buffers, sp->buffer_slot_count * sizeof(*nb)); kfree(sp->buffers); } @@ -324,9 +321,9 @@ static int pvr2_stream_buffer_count(struct pvr2_stream *sp,unsigned int cnt) } while (sp->buffer_total_count < cnt) { struct pvr2_buffer *bp; - bp = kmalloc(sizeof(*bp),GFP_KERNEL); + bp = kmalloc(sizeof(*bp), GFP_KERNEL); if (!bp) return -ENOMEM; - ret = pvr2_buffer_init(bp,sp,sp->buffer_total_count); + ret = pvr2_buffer_init(bp, sp, sp->buffer_total_count); if (ret) { kfree(bp); return -ENOMEM; @@ -369,10 +366,10 @@ static int pvr2_stream_achieve_buffer_count(struct pvr2_stream *sp) pvr2_trace(PVR2_TRACE_BUF_POOL, "/*---TRACE_FLOW---*/ poolCheck stream=%p cur=%d tgt=%d", - sp,sp->buffer_total_count,sp->buffer_target_count); + sp, sp->buffer_total_count, sp->buffer_target_count); if (sp->buffer_total_count < sp->buffer_target_count) { - return pvr2_stream_buffer_count(sp,sp->buffer_target_count); + return pvr2_stream_buffer_count(sp, sp->buffer_target_count); } cnt = 0; @@ -382,7 +379,7 @@ static int pvr2_stream_achieve_buffer_count(struct pvr2_stream *sp) cnt++; } if (cnt) { - pvr2_stream_buffer_count(sp,sp->buffer_total_count - cnt); + pvr2_stream_buffer_count(sp, sp->buffer_total_count - cnt); } return 0; @@ -393,7 +390,7 @@ static void pvr2_stream_internal_flush(struct pvr2_stream *sp) struct list_head *lp; struct pvr2_buffer *bp1; while ((lp = sp->queued_list.next) != &sp->queued_list) { - bp1 = list_entry(lp,struct pvr2_buffer,list_overhead); + bp1 = list_entry(lp, struct pvr2_buffer, list_overhead); pvr2_buffer_wipe(bp1); /* At this point, we should be guaranteed that no completion callback may happen on this buffer. But it's @@ -421,7 +418,7 @@ static void pvr2_stream_done(struct pvr2_stream *sp) { mutex_lock(&sp->mutex); do { pvr2_stream_internal_flush(sp); - pvr2_stream_buffer_count(sp,0); + pvr2_stream_buffer_count(sp, 0); } while (0); mutex_unlock(&sp->mutex); } @@ -436,8 +433,8 @@ static void buffer_complete(struct urb *urb) bp->status = 0; pvr2_trace(PVR2_TRACE_BUF_FLOW, "/*---TRACE_FLOW---*/ bufferComplete %p stat=%d cnt=%d", - bp,urb->status,urb->actual_length); - spin_lock_irqsave(&sp->list_lock,irq_flags); + bp, urb->status, urb->actual_length); + spin_lock_irqsave(&sp->list_lock, irq_flags); if ((!(urb->status)) || (urb->status == -ENOENT) || (urb->status == -ECONNRESET) || @@ -458,12 +455,12 @@ static void buffer_complete(struct urb *urb) (sp->buffers_failed)++; pvr2_trace(PVR2_TRACE_TOLERANCE, "stream %p ignoring error %d - fail count increased to %u", - sp,urb->status,sp->fail_count); + sp, urb->status, sp->fail_count); } else { (sp->buffers_failed)++; bp->status = urb->status; } - spin_unlock_irqrestore(&sp->list_lock,irq_flags); + spin_unlock_irqrestore(&sp->list_lock, irq_flags); pvr2_buffer_set_ready(bp); if (sp->callback_func) { sp->callback_func(sp->callback_data); @@ -473,9 +470,9 @@ static void buffer_complete(struct urb *urb) struct pvr2_stream *pvr2_stream_create(void) { struct pvr2_stream *sp; - sp = kzalloc(sizeof(*sp),GFP_KERNEL); + sp = kzalloc(sizeof(*sp), GFP_KERNEL); if (!sp) return sp; - pvr2_trace(PVR2_TRACE_INIT,"pvr2_stream_create: sp=%p",sp); + pvr2_trace(PVR2_TRACE_INIT, "pvr2_stream_create: sp=%p", sp); pvr2_stream_init(sp); return sp; } @@ -483,7 +480,7 @@ struct pvr2_stream *pvr2_stream_create(void) void pvr2_stream_destroy(struct pvr2_stream *sp) { if (!sp) return; - pvr2_trace(PVR2_TRACE_INIT,"pvr2_stream_destroy: sp=%p",sp); + pvr2_trace(PVR2_TRACE_INIT, "pvr2_stream_destroy: sp=%p", sp); pvr2_stream_done(sp); kfree(sp); } @@ -498,7 +495,7 @@ void pvr2_stream_setup(struct pvr2_stream *sp, sp->dev = dev; sp->endpoint = endpoint; sp->fail_tolerance = tolerance; - } while(0); mutex_unlock(&sp->mutex); + } while (0); mutex_unlock(&sp->mutex); } void pvr2_stream_set_callback(struct pvr2_stream *sp, @@ -508,11 +505,11 @@ void pvr2_stream_set_callback(struct pvr2_stream *sp, unsigned long irq_flags; mutex_lock(&sp->mutex); do { - spin_lock_irqsave(&sp->list_lock,irq_flags); + spin_lock_irqsave(&sp->list_lock, irq_flags); sp->callback_data = data; sp->callback_func = func; - spin_unlock_irqrestore(&sp->list_lock,irq_flags); - } while(0); + spin_unlock_irqrestore(&sp->list_lock, irq_flags); + } while (0); mutex_unlock(&sp->mutex); } @@ -521,7 +518,7 @@ void pvr2_stream_get_stats(struct pvr2_stream *sp, int zero_counts) { unsigned long irq_flags; - spin_lock_irqsave(&sp->list_lock,irq_flags); + spin_lock_irqsave(&sp->list_lock, irq_flags); if (stats) { stats->buffers_in_queue = sp->q_count; stats->buffers_in_idle = sp->i_count; @@ -535,7 +532,7 @@ void pvr2_stream_get_stats(struct pvr2_stream *sp, sp->buffers_failed = 0; sp->bytes_processed = 0; } - spin_unlock_irqrestore(&sp->list_lock,irq_flags); + spin_unlock_irqrestore(&sp->list_lock, irq_flags); } /* Query / set the nominal buffer count */ @@ -544,7 +541,7 @@ int pvr2_stream_get_buffer_count(struct pvr2_stream *sp) return sp->buffer_target_count; } -int pvr2_stream_set_buffer_count(struct pvr2_stream *sp,unsigned int cnt) +int pvr2_stream_set_buffer_count(struct pvr2_stream *sp, unsigned int cnt) { int ret; if (sp->buffer_target_count == cnt) return 0; @@ -552,7 +549,7 @@ int pvr2_stream_set_buffer_count(struct pvr2_stream *sp,unsigned int cnt) do { sp->buffer_target_count = cnt; ret = pvr2_stream_achieve_buffer_count(sp); - } while(0); + } while (0); mutex_unlock(&sp->mutex); return ret; } @@ -561,17 +558,17 @@ struct pvr2_buffer *pvr2_stream_get_idle_buffer(struct pvr2_stream *sp) { struct list_head *lp = sp->idle_list.next; if (lp == &sp->idle_list) return NULL; - return list_entry(lp,struct pvr2_buffer,list_overhead); + return list_entry(lp, struct pvr2_buffer, list_overhead); } struct pvr2_buffer *pvr2_stream_get_ready_buffer(struct pvr2_stream *sp) { struct list_head *lp = sp->ready_list.next; if (lp == &sp->ready_list) return NULL; - return list_entry(lp,struct pvr2_buffer,list_overhead); + return list_entry(lp, struct pvr2_buffer, list_overhead); } -struct pvr2_buffer *pvr2_stream_get_buffer(struct pvr2_stream *sp,int id) +struct pvr2_buffer *pvr2_stream_get_buffer(struct pvr2_stream *sp, int id) { if (id < 0) return NULL; if (id >= sp->buffer_total_count) return NULL; @@ -595,7 +592,7 @@ void pvr2_stream_kill(struct pvr2_stream *sp) if (sp->buffer_total_count != sp->buffer_target_count) { pvr2_stream_achieve_buffer_count(sp); } - } while(0); + } while (0); mutex_unlock(&sp->mutex); } @@ -629,18 +626,18 @@ int pvr2_buffer_queue(struct pvr2_buffer *bp) usb_fill_bulk_urb(bp->purb, // struct urb *urb sp->dev, // struct usb_device *dev // endpoint (below) - usb_rcvbulkpipe(sp->dev,sp->endpoint), + usb_rcvbulkpipe(sp->dev, sp->endpoint), bp->ptr, // void *transfer_buffer bp->max_count, // int buffer_length buffer_complete, bp); - usb_submit_urb(bp->purb,GFP_KERNEL); - } while(0); + usb_submit_urb(bp->purb, GFP_KERNEL); + } while (0); mutex_unlock(&sp->mutex); return ret; } -int pvr2_buffer_set_buffer(struct pvr2_buffer *bp,void *ptr,unsigned int cnt) +int pvr2_buffer_set_buffer(struct pvr2_buffer *bp, void *ptr, unsigned int cnt) { int ret = 0; unsigned long irq_flags; @@ -649,7 +646,7 @@ int pvr2_buffer_set_buffer(struct pvr2_buffer *bp,void *ptr,unsigned int cnt) sp = bp->stream; mutex_lock(&sp->mutex); do { - spin_lock_irqsave(&sp->list_lock,irq_flags); + spin_lock_irqsave(&sp->list_lock, irq_flags); if (bp->state != pvr2_buffer_state_idle) { ret = -EPERM; } else { @@ -661,10 +658,10 @@ int pvr2_buffer_set_buffer(struct pvr2_buffer *bp,void *ptr,unsigned int cnt) "/*---TRACE_FLOW---*/ bufferPool %8s cap cap=%07d cnt=%02d", pvr2_buffer_state_decode( pvr2_buffer_state_idle), - bp->stream->i_bcount,bp->stream->i_count); + bp->stream->i_bcount, bp->stream->i_count); } - spin_unlock_irqrestore(&sp->list_lock,irq_flags); - } while(0); + spin_unlock_irqrestore(&sp->list_lock, irq_flags); + } while (0); mutex_unlock(&sp->mutex); return ret; } |