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 B780D3F3254; Sat, 28 Feb 2026 17:42:23 +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=1772300543; cv=none; b=S1g7WfgCEMsNkSkr++7td3kAH7eTcRNZf1A6YITPhqsJ5HtWqH+kHmoCcbN+cwhZjWzz5kxk5L/iM3pdFa7UGOmDb2BYdvRM3YplB6kxVJm03iDWGIfV19Uy7eCIS5pFRIT+OD6HPWLhYMUjwc4bmtZ0imozlGN03p5qCdAKB70= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772300543; c=relaxed/simple; bh=YH7SUM71e+UxP/mZW5mT01cQ4S9baMEJHd3vHF97weI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=RmzT4by8dRohRFRJ4b/McdiWbbvAWtFL3reTfq00wrvTFn4h28rKA6+p0M+u9Og+x68YGBnNhxiHf3CIf0ZiiXjf67hkxfDRvV7PTGiON3jR6IyIpGxOq2rjZ+AoV1ZobDmXVFD053GyzSPTOcM6Ywty5q91k2Tj+plvxfpxShA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=OHLDIFt8; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="OHLDIFt8" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D5B47C19425; Sat, 28 Feb 2026 17:42:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772300543; bh=YH7SUM71e+UxP/mZW5mT01cQ4S9baMEJHd3vHF97weI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OHLDIFt8NsvkzkOQ0m8aiwnedYhOPQvMm8zKJC4efSpCtZvJRIgNLRfE1fGDe33ls RsAo0bLOi7Mo47X5VDQiJ44Kxh0+gwb18j12It76o0V7lt48lwRXM1OyNwB9oVYljn uiyklkl1EceG1yRlWYWMqiDyDOXEzHdrdoaAxcFRNtdrR35NlcuvLwKFjbWA/gwK5Q 7xu489l1mvKECRuiFHZC06FO/rXBJC2B9cFACnC99RfQCFBNeerNWG2utqv6RmSaDM iHd/1bsI36UlXwqJrUBoanNkcXCUOKOuuy2fV9gCjPAM63uKFWbdgJYG1nB7XX1xbc 1RawPaXyOTlVw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Sakari Ailus , Josh Poimboeuf , Nathan Chancellor , Hans Verkuil , Sasha Levin Subject: [PATCH 6.19 583/844] media: ccs: Avoid possible division by zero Date: Sat, 28 Feb 2026 12:28:16 -0500 Message-ID: <20260228173244.1509663-584-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228173244.1509663-1-sashal@kernel.org> References: <20260228173244.1509663-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Sakari Ailus [ Upstream commit 679f0b7b6a409750a25754c8833e268e5fdde742 ] Calculating maximum M for scaler configuration involves dividing by MIN_X_OUTPUT_SIZE limit register's value. Albeit the value is presumably non-zero, the driver was missing the check it in fact was. Fix this. Reported-by: Josh Poimboeuf Closes: https://lore.kernel.org/all/ahukd6b3wonye3zgtptvwzvrxldcruazs2exfvll6etjhmcxyj@vq3eh6pd375b/ Fixes: ccfc97bdb5ae ("[media] smiapp: Add driver") Cc: stable@vger.kernel.org # for 5.15 and later Signed-off-by: Sakari Ailus Reviewed-by: Nathan Chancellor Tested-by: Nathan Chancellor # build Signed-off-by: Hans Verkuil Signed-off-by: Sasha Levin --- drivers/media/i2c/ccs/ccs-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/i2c/ccs/ccs-core.c b/drivers/media/i2c/ccs/ccs-core.c index 43f7d515bab67..3cacc7d904935 100644 --- a/drivers/media/i2c/ccs/ccs-core.c +++ b/drivers/media/i2c/ccs/ccs-core.c @@ -2346,7 +2346,7 @@ static void ccs_set_compose_scaler(struct v4l2_subdev *subdev, * CCS_LIM(sensor, SCALER_N_MIN) / sel->r.height; max_m = crops[CCS_PAD_SINK]->width * CCS_LIM(sensor, SCALER_N_MIN) - / CCS_LIM(sensor, MIN_X_OUTPUT_SIZE); + / (CCS_LIM(sensor, MIN_X_OUTPUT_SIZE) ?: 1); a = clamp(a, CCS_LIM(sensor, SCALER_M_MIN), CCS_LIM(sensor, SCALER_M_MAX)); -- 2.51.0