From: Yann Sionneau <yann@sionneau.net>
To: Andi Shyti <andi.shyti@kernel.org>,
Codrin Ciubotariu <codrin.ciubotariu@microchip.com>,
Nicolas Ferre <nicolas.ferre@microchip.com>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Claudiu Beznea <claudiu.beznea@tuxon.dev>,
Michal Simek <michal.simek@amd.com>,
Oleksij Rempel <linux@rempel-privat.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
NXP Linux Team <linux-imx@nxp.com>
Cc: linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Yann Sionneau <yann@sionneau.net>
Subject: [PATCH 3/4] i2c: i2c-cadence: Reset pinctrl to NULL in case devm_pinctrl_get() fails
Date: Wed, 16 Aug 2023 22:04:09 +0200 [thread overview]
Message-ID: <20230816200410.62131-4-yann@sionneau.net> (raw)
In-Reply-To: <20230816200410.62131-1-yann@sionneau.net>
The core i2c code generally checks if pinctrl has been properly initialized
by just doing 'if (p) some_pinctrl_function(p)'.
In case devm_pinctrl_get() fails, pinctrl variable contains an error
instead of a valid pointer.
To prevent core i2c code to crash, reset back pinctrl pointer to NULL when
this happens.
Signed-off-by: Yann Sionneau <yann@sionneau.net>
---
drivers/i2c/busses/i2c-cadence.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/i2c/busses/i2c-cadence.c b/drivers/i2c/busses/i2c-cadence.c
index 9849f4502570..aa9ae0755674 100644
--- a/drivers/i2c/busses/i2c-cadence.c
+++ b/drivers/i2c/busses/i2c-cadence.c
@@ -1299,6 +1299,7 @@ static int cdns_i2c_probe(struct platform_device *pdev)
if (IS_ERR(id->rinfo.pinctrl)) {
int err = PTR_ERR(id->rinfo.pinctrl);
+ id->rinfo.pinctrl = NULL;
dev_info(&pdev->dev, "can't get pinctrl, bus recovery not supported\n");
if (err != -ENODEV)
return err;
--
2.34.1
next prev parent reply other threads:[~2023-08-16 20:05 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-16 20:04 [PATCH 0/4] i2c: devm_pinctrl_get() usage fixes Yann Sionneau
2023-08-16 20:04 ` [PATCH 1/4] i2c: mv64xxx: devm_pinctrl_get() cannot return NULL Yann Sionneau
2023-08-25 21:11 ` Wolfram Sang
2023-08-16 20:04 ` [PATCH 2/4] i2c: at91-master: " Yann Sionneau
2023-09-05 10:42 ` Hari.PrasathGE
2023-08-16 20:04 ` Yann Sionneau [this message]
2023-08-16 20:04 ` [PATCH 4/4] i2c: imx: " Yann Sionneau
2023-08-17 4:46 ` Oleksij Rempel
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20230816200410.62131-4-yann@sionneau.net \
--to=yann@sionneau.net \
--cc=alexandre.belloni@bootlin.com \
--cc=andi.shyti@kernel.org \
--cc=claudiu.beznea@tuxon.dev \
--cc=codrin.ciubotariu@microchip.com \
--cc=festevam@gmail.com \
--cc=kernel@pengutronix.de \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-i2c@vger.kernel.org \
--cc=linux-imx@nxp.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@rempel-privat.de \
--cc=michal.simek@amd.com \
--cc=nicolas.ferre@microchip.com \
--cc=s.hauer@pengutronix.de \
--cc=shawnguo@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox