From: Rongrong Zou <zourongrong@gmail.com>
To: baruch@tkos.co.il
Cc: linux-i2c@vger.kernel.org,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Jarkko Nikula <jarkko.nikula@linux.intel.com>,
Mika Westerberg <mika.westerberg@linux.intel.com>
Subject: mutex_lock in designware-i2c
Date: Mon, 11 Jan 2016 19:12:10 +0800 [thread overview]
Message-ID: <56938E0A.5080303@gmail.com> (raw)
Hi, baruch
I found a mutex lock in dw_i2c_dev for each adapter,
struct dw_i2c_dev {
struct device *dev;
void __iomem *base;
struct completion cmd_complete;
struct mutex lock;
struct clk *clk;
but there is another lock: adapter->bus_lock, this lock is also
for each adapter, why we need both of them ?
Regards,
Rongrong
next reply other threads:[~2016-01-11 11:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-11 11:12 Rongrong Zou [this message]
2016-01-11 21:39 ` mutex_lock in designware-i2c Baruch Siach
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