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 5B4662C9D for ; Tue, 18 Jan 2022 02:21:06 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C3CFBC36AEB; Tue, 18 Jan 2022 02:21:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1642472466; bh=oN+riz2KPBpT4JWOx2X4OywlB2pWHJD4t8/cTC9SMSQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HvZ44EzXkUAJDymBLi0xca+pVRZjoSLL7CslTwxTTYEySkGqt+Ye5SUxZ6aA0roTX SGXMIQSQnfnVdT2/vhe6GdT1qWprevH1nYEgG723diX5q4lUgMXfUO+/o0NDvLOFev BeXxJqIhUsp+/kkVVLcSrK/cdI2Z4RPVfugwFQ1E8+XSQrASqKwq6Yw3xFGQ8nJ1a/ 1BOd8ydNpNUR9au2BT6tPDJbsof+lZip4zh36ELB6VsohIVHx4ka+tZmsz3BpuxwRB aznhBPt7yTsyIAaX6xLUyAQPX2lY5j1VR0HDttUMZ+ZA+OMHDz1Duxcmo4/Awy9dep 0WOEQmOpBs/pw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Mauro Carvalho Chehab , Sasha Levin , mchehab@kernel.org, gregkh@linuxfoundation.org, hverkuil-cisco@xs4all.nl, kitakar@gmail.com, arnd@arndb.de, tomi.valkeinen@ideasonboard.com, alex.dewar90@gmail.com, alinesantanacordeiro@gmail.com, linux-media@vger.kernel.org, linux-staging@lists.linux.dev Subject: [PATCH AUTOSEL 5.16 022/217] media: atomisp: check before deference asd variable Date: Mon, 17 Jan 2022 21:16:25 -0500 Message-Id: <20220118021940.1942199-22-sashal@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220118021940.1942199-1-sashal@kernel.org> References: <20220118021940.1942199-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-staging@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Mauro Carvalho Chehab [ Upstream commit 71665d816214124d6bc4eb80314ac8f84ecacd78 ] The asd->isp was referenced before checking if asd is not NULL. This fixes this warning: ../drivers/staging/media/atomisp/pci/atomisp_cmd.c:5548 atomisp_set_fmt_to_snr() warn: variable dereferenced before check 'asd' (see line 5540) While here, avoid getting the pipe pointer twice. Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/staging/media/atomisp/pci/atomisp_cmd.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/staging/media/atomisp/pci/atomisp_cmd.c b/drivers/staging/media/atomisp/pci/atomisp_cmd.c index 75a531667d743..1ddb9c815a3cb 100644 --- a/drivers/staging/media/atomisp/pci/atomisp_cmd.c +++ b/drivers/staging/media/atomisp/pci/atomisp_cmd.c @@ -5529,8 +5529,8 @@ static int atomisp_set_fmt_to_snr(struct video_device *vdev, unsigned int padding_w, unsigned int padding_h, unsigned int dvs_env_w, unsigned int dvs_env_h) { - struct atomisp_sub_device *asd = atomisp_to_video_pipe(vdev)->asd; struct atomisp_video_pipe *pipe = atomisp_to_video_pipe(vdev); + struct atomisp_sub_device *asd = pipe->asd; const struct atomisp_format_bridge *format; struct v4l2_subdev_pad_config pad_cfg; struct v4l2_subdev_state pad_state = { @@ -5541,7 +5541,7 @@ static int atomisp_set_fmt_to_snr(struct video_device *vdev, }; struct v4l2_mbus_framefmt *ffmt = &vformat.format; struct v4l2_mbus_framefmt *req_ffmt; - struct atomisp_device *isp = asd->isp; + struct atomisp_device *isp; struct atomisp_input_stream_info *stream_info = (struct atomisp_input_stream_info *)ffmt->reserved; u16 stream_index = ATOMISP_INPUT_STREAM_GENERAL; @@ -5555,6 +5555,8 @@ static int atomisp_set_fmt_to_snr(struct video_device *vdev, return -EINVAL; } + isp = asd->isp; + v4l2_fh_init(&fh.vfh, vdev); stream_index = atomisp_source_pad_to_stream_id(asd, source_pad); -- 2.34.1