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 122703BBEB; Fri, 15 Nov 2024 06:39:36 +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=1731652777; cv=none; b=EoWU/bYfrDEHR+Aa7pHlmnFTzHrZyzLnSXIOKjcUDYGWukPyQ8RbBSy7ejMBamfpmefRGccbtfA92RwyIOHbgi5RoW2MB+NyDLBaRFDZlZAAeV1YYrwPERHXAP2QxL9tZEYrs9a4dPE9ByZL4BLVLHqv/cYgHA4A14z7kkO+moY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731652777; c=relaxed/simple; bh=CJn03oE6x6/JZZrWq6LdeZWyyifEbJJtPf7F5Sm9NOw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Q0Gajx1NqVrDIHSPMvMEmO33vJYWm++FwJ1po3gmDPjhlMDatoOuhP1E8/Fy1pVTYprkiKU94k/0TtlbRFy4MDhCXQ9puxniX/r0EWj9Hh3AOMalELDOte9fBFyWq/kwdx6CgnOVkojxg1xpR0IasS3+kaxowY1NI+af9E8CeIY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=F8OXEHKy; 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="F8OXEHKy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DEAB2C4CECF; Fri, 15 Nov 2024 06:39:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1731652776; bh=CJn03oE6x6/JZZrWq6LdeZWyyifEbJJtPf7F5Sm9NOw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=F8OXEHKyliQP7nT1OyeCS3KIyNBLKZmwcnMAsY2p7xHjvq5Yz4wVebVoE296ZWVwl hlm+FXLTe+iGU3xucJGKgpIzKRe0CzXgGPrw8OMvT+ujboWudxHxsWfAO3pRZBDvah KPv6RHEXuusglBEG/FW39pY5CKIxuoRsCNIHmJzs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH 4.19 12/52] media: dvb_frontend: dont play tricks with underflow values Date: Fri, 15 Nov 2024 07:37:25 +0100 Message-ID: <20241115063723.296057793@linuxfoundation.org> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241115063722.845867306@linuxfoundation.org> References: <20241115063722.845867306@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 4.19-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 90acf52cc253c..6082a8019c151 100644 --- a/drivers/media/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb-core/dvb_frontend.c @@ -454,8 +454,8 @@ 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