linux-kernel - [PATCH 1/1] media: camss: set VFE bpl_alignment to 16 for sdm845 and sm8250

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230518215235.1668871-2-andrey.konovalov@linaro.org>
Date:   Fri, 19 May 2023 00:52:35 +0300
From:   Andrey Konovalov <andrey.konovalov@...aro.org>
To:     rfoss@...nel.org, todor.too@...il.com, bryan.odonoghue@...aro.org
Cc:     agross@...nel.org, andersson@...nel.org, konrad.dybcio@...aro.org,
        mchehab@...nel.org, linux-media@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Andrey Konovalov <andrey.konovalov@...aro.org>
Subject: [PATCH 1/1] media: camss: set VFE bpl_alignment to 16 for sdm845 and sm8250

>From the experiments with camera sensors using SGRBG10_1X10/3280x2464 and
SRGGB10_1X10/3280x2464 formats, it becomes clear that on sdm845 and sm8250
VFE outputs the lines padded to a length multiple of 16 bytes. As in the
current driver the value of the bpl_alignment is set to 8 bytes, the frames
captured in formats with the bytes-per-line value being not a multiple of
16 get corrupted.

Set the bpl_alignment of the camss video output device to 16 for sdm845 and
sm8250 to fix that.

Signed-off-by: Andrey Konovalov <andrey.konovalov@...aro.org>
---
 drivers/media/platform/qcom/camss/camss-vfe.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/qcom/camss/camss-vfe.c b/drivers/media/platform/qcom/camss/camss-vfe.c
index e0832f3f4f25..06c95568e5af 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe.c
+++ b/drivers/media/platform/qcom/camss/camss-vfe.c
@@ -1541,7 +1541,11 @@ int msm_vfe_register_entities(struct vfe_device *vfe,
 		}
 
 		video_out->ops = &vfe->video_ops;
-		video_out->bpl_alignment = 8;
+		if (vfe->camss->version == CAMSS_845 ||
+		    vfe->camss->version == CAMSS_8250)
+			video_out->bpl_alignment = 16;
+		else
+			video_out->bpl_alignment = 8;
 		video_out->line_based = 0;
 		if (i == VFE_LINE_PIX) {
 			video_out->bpl_alignment = 16;
-- 
2.34.1