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[media] media: dvb-core: prepare for enabling irq in complete()

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Complete() will be run with interrupt enabled, so change to
spin_lock_irqsave().
These functions may be called inside URB->complete(), so use
spin_lock_irqsave().

Signed-off-by: Ming Lei <ming.lei@canonical.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Ming Lei 2013-08-17 12:25:07 -03:00 committed by Mauro Carvalho Chehab
parent cbbe1c03e7
commit 503f2de78d
1 changed files with 11 additions and 6 deletions
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17
drivers/media/dvb-core/dvb_demux.c
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@ -476,7 +476,9 @@ static void dvb_dmx_swfilter_packet(struct dvb_demux *demux, const u8 *buf)
void dvb_dmx_swfilter_packets(struct dvb_demux *demux, const u8 *buf,
size_t count)
{
spin_lock(&demux->lock);
unsigned long flags;
spin_lock_irqsave(&demux->lock, flags);
while (count--) {
if (buf[0] == 0x47)
@ -484,7 +486,7 @@ void dvb_dmx_swfilter_packets(struct dvb_demux *demux, const u8 *buf,
buf += 188;
}
spin_unlock(&demux->lock);
spin_unlock_irqrestore(&demux->lock, flags);
}
EXPORT_SYMBOL(dvb_dmx_swfilter_packets);
@ -519,8 +521,9 @@ static inline void _dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf,
{
int p = 0, i, j;
const u8 *q;
unsigned long flags;
spin_lock(&demux->lock);
spin_lock_irqsave(&demux->lock, flags);
if (demux->tsbufp) { /* tsbuf[0] is now 0x47. */
i = demux->tsbufp;
@ -564,7 +567,7 @@ static inline void _dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf,
}
bailout:
spin_unlock(&demux->lock);
spin_unlock_irqrestore(&demux->lock, flags);
}
void dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf, size_t count)
@ -581,11 +584,13 @@ EXPORT_SYMBOL(dvb_dmx_swfilter_204);
void dvb_dmx_swfilter_raw(struct dvb_demux *demux, const u8 *buf, size_t count)
{
spin_lock(&demux->lock);
unsigned long flags;
spin_lock_irqsave(&demux->lock, flags);
demux->feed->cb.ts(buf, count, NULL, 0, &demux->feed->feed.ts, DMX_OK);
spin_unlock(&demux->lock);
spin_unlock_irqrestore(&demux->lock, flags);
}
EXPORT_SYMBOL(dvb_dmx_swfilter_raw);