| Message ID | 20230305212519.499-1-yongsuyoo0215@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | media: dvb_demux: Fix a bug for the continuity counter | expand |
Hi ~ Everyone Can you share how this patch is going ? 2023년 3월 6일 (월) 오전 6:25, <yongsuyoo0215@gmail.com>님이 작성: > > From: YongSu Yoo <yongsuyoo0215@gmail.com> > > Signed-off-by: Yongsu Yoo <yongsuyoo0215@gmail.com> > > In dvb_demux.c, some logics exist which compare the expected > continuity counter and the real continuity counter. If they > are not matched each other, both of the expected continuity > counter and the real continuity counter should be printed. > But there exists a bug that the expected continuity counter > is not correctly printed. The expected continuity counter is > replaced with the real countinuity counter + 1 so that > the epected continuity counter is not correclty printed. > This is wrong. This bug is fixed. > --- > drivers/media/dvb-core/dvb_demux.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/media/dvb-core/dvb_demux.c b/drivers/media/dvb-core/dvb_demux.c > index 398c86279b5b..7c4d86bfdd6c 100644 > --- a/drivers/media/dvb-core/dvb_demux.c > +++ b/drivers/media/dvb-core/dvb_demux.c > @@ -115,12 +115,12 @@ static inline int dvb_dmx_swfilter_payload(struct dvb_demux_feed *feed, > > cc = buf[3] & 0x0f; > ccok = ((feed->cc + 1) & 0x0f) == cc; > - feed->cc = cc; > if (!ccok) { > set_buf_flags(feed, DMX_BUFFER_FLAG_DISCONTINUITY_DETECTED); > dprintk_sect_loss("missed packet: %d instead of %d!\n", > cc, (feed->cc + 1) & 0x0f); > } > + feed->cc = cc; > > if (buf[1] & 0x40) // PUSI ? > feed->peslen = 0xfffa; > @@ -300,7 +300,6 @@ static int dvb_dmx_swfilter_section_packet(struct dvb_demux_feed *feed, > > cc = buf[3] & 0x0f; > ccok = ((feed->cc + 1) & 0x0f) == cc; > - feed->cc = cc; > > if (buf[3] & 0x20) { > /* adaption field present, check for discontinuity_indicator */ > @@ -336,6 +335,7 @@ static int dvb_dmx_swfilter_section_packet(struct dvb_demux_feed *feed, > feed->pusi_seen = false; > dvb_dmx_swfilter_section_new(feed); > } > + feed->cc = cc; > > if (buf[1] & 0x40) { > /* PUSI=1 (is set), section boundary is here */ > -- > 2.17.1 >
diff --git a/drivers/media/dvb-core/dvb_demux.c b/drivers/media/dvb-core/dvb_demux.c index 398c86279b5b..7c4d86bfdd6c 100644 --- a/drivers/media/dvb-core/dvb_demux.c +++ b/drivers/media/dvb-core/dvb_demux.c @@ -115,12 +115,12 @@ static inline int dvb_dmx_swfilter_payload(struct dvb_demux_feed *feed, cc = buf[3] & 0x0f; ccok = ((feed->cc + 1) & 0x0f) == cc; - feed->cc = cc; if (!ccok) { set_buf_flags(feed, DMX_BUFFER_FLAG_DISCONTINUITY_DETECTED); dprintk_sect_loss("missed packet: %d instead of %d!\n", cc, (feed->cc + 1) & 0x0f); } + feed->cc = cc; if (buf[1] & 0x40) // PUSI ? feed->peslen = 0xfffa; @@ -300,7 +300,6 @@ static int dvb_dmx_swfilter_section_packet(struct dvb_demux_feed *feed, cc = buf[3] & 0x0f; ccok = ((feed->cc + 1) & 0x0f) == cc; - feed->cc = cc; if (buf[3] & 0x20) { /* adaption field present, check for discontinuity_indicator */ @@ -336,6 +335,7 @@ static int dvb_dmx_swfilter_section_packet(struct dvb_demux_feed *feed, feed->pusi_seen = false; dvb_dmx_swfilter_section_new(feed); } + feed->cc = cc; if (buf[1] & 0x40) { /* PUSI=1 (is set), section boundary is here */