linux-kernel - [PATCH 2/4] media: i2c: ov2685: Add print for power on write failed

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: <20230129-ov2685-improvements-v1-2-f281bd49399c@z3ntu.xyz>
Date:   Sun, 29 Jan 2023 10:42:36 +0100
From:   Luca Weiss <luca@...tu.xyz>
To:     ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
        Shunqian Zheng <zhengsq@...k-chips.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Jacopo Mondi <jacopo.mondi@...asonboard.com>
Cc:     linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        Luca Weiss <luca@...tu.xyz>
Subject: [PATCH 2/4] media: i2c: ov2685: Add print for power on write
 failed

If the sensor doens't power up correctly, for example due to incorrect
devicetree description, the power up i2c writes will fail.

Add an error print for this situation.

Signed-off-by: Luca Weiss <luca@...tu.xyz>
---
 drivers/media/i2c/ov2685.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/i2c/ov2685.c b/drivers/media/i2c/ov2685.c
index a422f4c8a2eb..844a91dbc8e5 100644
--- a/drivers/media/i2c/ov2685.c
+++ b/drivers/media/i2c/ov2685.c
@@ -419,8 +419,10 @@ static int __ov2685_power_on(struct ov2685 *ov2685)
 	 * writing register before .s_stream() as a workaround
 	 */
 	ret = ov2685_write_array(ov2685->client, ov2685->cur_mode->reg_list);
-	if (ret)
+	if (ret) {
+		dev_err(dev, "Failed to set regs for power on\n");
 		goto disable_supplies;
+	}
 
 	return 0;
 

-- 
2.39.1