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media: ngene: Add dvb_ca_en50221_init return value check

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[ Upstream commit 9bb1fd7eddcab2d28cfc11eb20f1029154dac718 ]

The return value of dvb_ca_en50221_init() is not checked here that may
cause undefined behavior in case of nonzero value return.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 25aee3debe04 ("[media] Rename media/dvb as media/pci")
Signed-off-by: Aleksandr Burakov <a.burakov@rosalinux.ru>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Aleksandr Burakov 2024-03-01 14:15:53 +03:00 committed by Greg Kroah-Hartman
parent 916143cff8
commit 5a07365451
1 changed files with 3 additions and 1 deletions
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4
drivers/media/pci/ngene/ngene-core.c
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@ -1488,7 +1488,9 @@ static int init_channel(struct ngene_channel *chan)
}
if (dev->ci.en && (io & NGENE_IO_TSOUT)) {
dvb_ca_en50221_init(adapter, dev->ci.en, 0, 1);
ret = dvb_ca_en50221_init(adapter, dev->ci.en, 0, 1);
if (ret != 0)
goto err;
set_transfer(chan, 1);
chan->dev->channel[2].DataFormatFlags = DF_SWAP32;
set_transfer(&chan->dev->channel[2], 1);