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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: 1da177e4c3 ("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 Greg Kroah-Hartman
parent b751a96025
commit fd6d84b8ee
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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@@ -443,8 +443,8 @@ static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wra
default: default:
fepriv->auto_step++; fepriv->auto_step++;
fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */ fepriv->auto_sub_step = 0;
break; continue;
} }
if (!ready) fepriv->auto_sub_step++; if (!ready) fepriv->auto_sub_step++;