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| author |   Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-02-01 11:50:42 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-02-08 10:46:58 -0200 |
| commit | bc081cc8693800ebb118cc2cc6a859dd0b45921b (patch) | |
| tree | 16d40582cfbdfefa332ba05aa8f717a08ec5f81b /drivers/media/dvb/dvb-core/dvb_demux.c | |
| parent | V4L/DVB: Fix the risk of an oops at dvb_dmx_release (diff) | |
| download | linux-dev-bc081cc8693800ebb118cc2cc6a859dd0b45921b.tar.xz linux-dev-bc081cc8693800ebb118cc2cc6a859dd0b45921b.zip | |
V4L/DVB: dvb_demux: Don't use vmalloc at dvb_dmx_swfilter_packet
As dvb_dmx_swfilter_packet() is protected by a spinlock, it shouldn't sleep.
However, vmalloc() may call sleep. So, move the initialization of
dvb_demux::cnt_storage field to a better place.
Reviewed-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/media/dvb/dvb-core/dvb_demux.c | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/drivers/media/dvb/dvb-core/dvb_demux.c b/drivers/media/dvb/dvb-core/dvb_demux.c index a78408e76e75..67f189b7aa1f 100644 --- a/drivers/media/dvb/dvb-core/dvb_demux.c +++ b/drivers/media/dvb/dvb-core/dvb_demux.c @@ -426,16 +426,7 @@ static void dvb_dmx_swfilter_packet(struct dvb_demux *demux, const u8 *buf) }; }; - if (dvb_demux_tscheck) { - if (!demux->cnt_storage) - demux->cnt_storage = vmalloc(MAX_PID + 1); - - if (!demux->cnt_storage) { - printk(KERN_WARNING "Couldn't allocate memory for TS/TEI check. Disabling it\n"); - dvb_demux_tscheck = 0; - goto no_dvb_demux_tscheck; - } - + if (demux->cnt_storage) { /* check pkt counter */ if (pid < MAX_PID) { if (buf[1] & 0x80) @@ -454,7 +445,6 @@ static void dvb_dmx_swfilter_packet(struct dvb_demux *demux, const u8 *buf) }; /* end check */ }; -no_dvb_demux_tscheck: list_for_each_entry(feed, &demux->feed_list, list_head) { if ((feed->pid != pid) && (feed->pid != 0x2000)) @@ -1258,6 +1248,13 @@ int dvb_dmx_init(struct dvb_demux *dvbdemux) dvbdemux->feed[i].index = i; } + if (dvb_demux_tscheck) { + dvbdemux->cnt_storage = vmalloc(MAX_PID + 1); + + if (!dvbdemux->cnt_storage) + printk(KERN_WARNING "Couldn't allocate memory for TS/TEI check. Disabling it\n"); + } + INIT_LIST_HEAD(&dvbdemux->frontend_list); for (i = 0; i < DMX_TS_PES_OTHER; i++) { |