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path: root/drivers/media/usb/pvrusb2/pvrusb2-io.c
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Diffstat (limited to 'drivers/media/usb/pvrusb2/pvrusb2-io.c')
-rw-r--r--drivers/media/usb/pvrusb2/pvrusb2-io.c127
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;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.