From: Dinghao Liu <dinghao.liu@zju.edu.cn>
To: dinghao.liu@zju.edu.cn, kjlu@umn.edu
Cc: Tony Lindgren <tony@atomide.com>, Vignesh R <vigneshr@ti.com>,
Aaro Koskinen <aaro.koskinen@iki.fi>,
linux-omap@vger.kernel.org, linux-i2c@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] i2c: omap: Fix rumtime PM imbalance on error
Date: Wed, 7 Apr 2021 11:30:30 +0800 [thread overview]
Message-ID: <20210407033030.13419-1-dinghao.liu@zju.edu.cn> (raw)
pm_runtime_get_sync() will increase the rumtime PM counter
even it returns an error. Thus a pairing decrement is needed
to prevent refcount leak. Fix this by replacing this API with
pm_runtime_resume_and_get(), which will not change the runtime
PM counter on error.
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
---
drivers/i2c/busses/i2c-omap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index 12ac4212aded..c9ee0875a79d 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -1404,7 +1404,7 @@ omap_i2c_probe(struct platform_device *pdev)
pm_runtime_set_autosuspend_delay(omap->dev, OMAP_I2C_PM_TIMEOUT);
pm_runtime_use_autosuspend(omap->dev);
- r = pm_runtime_get_sync(omap->dev);
+ r = pm_runtime_resume_and_get(omap->dev);
if (r < 0)
goto err_free_mem;
--
2.17.1
next reply other threads:[~2021-04-07 3:30 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-07 3:30 Dinghao Liu [this message]
2021-04-07 6:10 ` [PATCH] i2c: omap: Fix rumtime PM imbalance on error Tony Lindgren
2021-04-07 6:19 ` Vignesh Raghavendra
2021-04-07 6:27 ` Tony Lindgren
2021-04-07 7:45 ` Vignesh Raghavendra
2021-04-07 9:59 ` Tony Lindgren
2021-04-14 7:54 ` Wolfram Sang
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=20210407033030.13419-1-dinghao.liu@zju.edu.cn \
--to=dinghao.liu@zju.edu.cn \
--cc=aaro.koskinen@iki.fi \
--cc=kjlu@umn.edu \
--cc=linux-i2c@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-omap@vger.kernel.org \
--cc=tony@atomide.com \
--cc=vigneshr@ti.com \
/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;
as well as URLs for NNTP newsgroup(s).