From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DF8D121503E; Tue, 12 Nov 2024 10:34:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731407697; cv=none; b=uGlJr5ExFR+kuszsSx8GLmesETO9qAEHOImDlSc9AO72QYtOfLwcw8Rl+5C+d/XLRD5ZCJw3cicvDaKnM0zo9ctW98shin+4FHRLdkbfvbiPwDK2zpYpZ1/UlMc9samHUzMje2YkWKLTk8N62XjyVBNvIXoo3bgBAEFnHBNpv5I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731407697; c=relaxed/simple; bh=4h6utmM2dWnDCGutz6V91F76dXFo55QX4TziDTONx/k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Er5MHaU8XtupcVb7evtyA976/yid+IXk9VimkniQxJbw3EOceG2tH0bjttutnFgD64YzXw15HhHFlLQ+pqx4bulz48wUk72iBtWPhvPmhOWlEFOS4T6qR7LyOFst03C7dtduBzrzib6jxZGB0gZmRqd2RU24be92FJsVITLFpXE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=01YCSqQD; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="01YCSqQD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2C8B8C4CECD; Tue, 12 Nov 2024 10:34:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1731407696; bh=4h6utmM2dWnDCGutz6V91F76dXFo55QX4TziDTONx/k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=01YCSqQD6iHx4jSKYg1JbP6s4li/UO3tNhRf60LQ+qxTgBuy8R4WYElb+C8dcStyE 6/gkJMafuj9Inup4DbNTRQmbZgSKs/JJi8a+Pg3fYMFwtmBnqQSR3i7dWjbZBGv8Ds jKzJqYZ7FKydqCXmpQUEKhHJDlY1mLDYd6LMTRHg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH 6.6 053/119] media: dvb_frontend: dont play tricks with underflow values Date: Tue, 12 Nov 2024 11:21:01 +0100 Message-ID: <20241112101850.743483291@linuxfoundation.org> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241112101848.708153352@linuxfoundation.org> References: <20241112101848.708153352@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Mauro Carvalho Chehab [ 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 Signed-off-by: Sasha Levin --- drivers/media/dvb-core/dvb_frontend.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c index 93d3378a0df4b..344dc9dc6613f 100644 --- a/drivers/media/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb-core/dvb_frontend.c @@ -443,8 +443,8 @@ 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++; -- 2.43.0