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 C45CC2C11DE; Sun, 1 Mar 2026 01:32:23 +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=1772328743; cv=none; b=jjmDcj51CgcS/rE2D2+7tB7RL4ohvJ0Q8JicTupJ2l2XH/K3xHo/sIdpu3pZCoxfxMKCtOxtxj2gzzeNhnnmEyrSx81qe5zcFyC2Tl9S/jkvk/g5OnKXxepW6ykWv0ZAcM9G0GUOBR1w8DOpLB13b00ton0XlRQkWA0jYre6bPk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772328743; c=relaxed/simple; bh=BR63TkmZTKO7nd4JCDyuko715DkuYr9vtio4ZV2nQeg=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=YhW3bV0ulYNvVvHhc3dYE3hDR+vc2prTl/dA9SDyLSDw54AQRApf6fnbNqO21mtSWZa/RDd8p+3DXnpaFqjCAaTBBsu1uv4fW+HzoHyVuEiSeIh+xIJxLh8MJsZMd0tBK7Bgd+fb4/Vu6bTp4Y8wopLW/MPZGk2YURb9L9OAztw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MpsEUoRa; 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="MpsEUoRa" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0772BC19421; Sun, 1 Mar 2026 01:32:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772328743; bh=BR63TkmZTKO7nd4JCDyuko715DkuYr9vtio4ZV2nQeg=; h=From:To:Cc:Subject:Date:From; b=MpsEUoRazfiqCPK4Fs2gZmBg29PVM+B4o4+Qs0Iqc33H4hat1zdQSW2KYjQekvRHn /9WjjtYQpUC1G7jt5SRwAJt4nmBUDjoKYRpasZ1+81o9wZh1gr+gEfr1DXDYjkvFv9 iBBE8JLyHZ08XYadoew1sFKbr+PjT8n6zq3YcyZYAbmfWgSUyxfPuOX8v+WxOkL919 8gTMpWir6oELYI5ISwlrfm6tQmwjcwp5ICAmP6hq6KJRRaA8Ovxl+Mc3DjiZohOiRa 5m3lu3fKNJ0cuRGd7VIkdtSbPuR61QHbVNE8cG7XCLXYA4QGr92aoybh0WpqY7fOUl OO+0ko6ayyrTg== From: Sasha Levin To: stable@vger.kernel.org, sakari.ailus@linux.intel.com Cc: Josh Poimboeuf , Nathan Chancellor , Hans Verkuil , linux-media@vger.kernel.org Subject: FAILED: Patch "media: ccs: Avoid possible division by zero" failed to apply to 6.6-stable tree Date: Sat, 28 Feb 2026 20:32:21 -0500 Message-ID: <20260301013221.1691282-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Hint: ignore X-stable: review Content-Transfer-Encoding: 8bit The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . Thanks, Sasha ------------------ original commit in Linus's tree ------------------ >From 679f0b7b6a409750a25754c8833e268e5fdde742 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Tue, 25 Nov 2025 00:24:48 +0200 Subject: [PATCH] media: ccs: Avoid possible division by zero 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 --- 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 f8523140784c7..dadff8c506794 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