From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kevin Hilman Subject: [PATCH] I2C: OMAP: xfer: fix runtime PM get/put balance on error Date: Tue, 26 Jun 2012 18:45:32 -0700 Message-ID: <1340761532-27231-1-git-send-email-khilman@ti.com> Return-path: Sender: linux-i2c-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Wolfram Sang Cc: linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Shubhrajyoti D List-Id: linux-i2c@vger.kernel.org In omap_i2c_xfer(), ensure pm_runtime_put() is called, even on failure. Without this, after a failed xfer, the runtime PM usecount will have been incremented, but not decremented causing the usecount to never reach zero after a failure. This keeps the device always runtime PM enabled which keeps the enclosing power domain active, and prevents full-chip retention/off from happening during idle. Cc: Shubhrajyoti D Signed-off-by: Kevin Hilman --- This patch applies to current i2c-embedded/for-next branch 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 9895fa7..b105733 100644 --- a/drivers/i2c/busses/i2c-omap.c +++ b/drivers/i2c/busses/i2c-omap.c @@ -582,7 +582,7 @@ omap_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num) r = pm_runtime_get_sync(dev->dev); if (IS_ERR_VALUE(r)) - return r; + goto out; r = omap_i2c_wait_for_bb(dev); if (r < 0) -- 1.7.9.2