From: Axel Lin <axel.lin@ingics.com>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: Patrice Chotard <patrice.chotard@st.com>, linux-kernel@vger.kernel.org
Subject: [PATCH 2/2] pinctrl: core: Add proper mutex lock in pinctrl_request_gpio
Date: Mon, 19 Aug 2013 10:07:46 +0800 [thread overview]
Message-ID: <1376878066.10251.4.camel@phoenix> (raw)
In-Reply-To: <1376877989.10251.2.camel@phoenix>
This one is missed in commit 42fed7ba "pinctrl: move subsystem mutex to
pinctrl_dev struct".
Signed-off-by: Axel Lin <axel.lin@ingics.com>
---
drivers/pinctrl/core.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index 53c40d9..92f86ab 100644
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -562,11 +562,15 @@ int pinctrl_request_gpio(unsigned gpio)
return ret;
}
+ mutex_lock(&pctldev->mutex);
+
/* Convert to the pin controllers number space */
pin = gpio_to_pin(range, gpio);
ret = pinmux_request_gpio(pctldev, range, pin, gpio);
+ mutex_unlock(&pctldev->mutex);
+
return ret;
}
EXPORT_SYMBOL_GPL(pinctrl_request_gpio);
--
1.8.1.2
next prev parent reply other threads:[~2013-08-19 2:07 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-19 2:06 [PATCH 1/2] pinctrl: core: Remove unnecessary test for desc->name Axel Lin
2013-08-19 2:07 ` Axel Lin [this message]
2013-08-21 21:42 ` [PATCH 2/2] pinctrl: core: Add proper mutex lock in pinctrl_request_gpio Linus Walleij
2013-08-22 3:41 ` Axel Lin
2013-08-28 11:13 ` Linus Walleij
2013-08-21 21:31 ` [PATCH 1/2] pinctrl: core: Remove unnecessary test for desc->name Linus Walleij
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