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media: dvb_frontend: don't play tricks with underflow values

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[ Upstream commit 9883a4d41aba7612644e9bb807b971247cea9b9d ]

fepriv->auto_sub_step is unsigned. Setting it to -1 is just a
trick to avoid calling continue, as reported by Coverity.

It relies to have this code just afterwards:

	if (!ready) fepriv->auto_sub_step++;

Simplify the code by simply setting it to zero and use
continue to return to the while loop.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Mauro Carvalho Chehab 2024-10-15 16:05:16 +02:00 • committed by Kreciorek
parent 7bfceb4f48
commit 224f0ed85c
1 changed files with 2 additions and 2 deletions
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4
drivers/media/dvb-core/dvb_frontend.c
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@ -442,8 +442,8 @@ static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wra
default:
fepriv->auto_step++;
fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */
break;
fepriv->auto_sub_step = 0;
continue;
}
if (!ready) fepriv->auto_sub_step++;