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i2c: designware: Remove needless pm_runtime_put_noidle() call 

I guess pm_runtime_put_noidle() call in i2c_dw_probe_slave() was copied
by accident from similar master mode adapter registration code. It is
unbalanced due missing pm_runtime_get_noresume() but harmless since it
doesn't decrease dev->power.usage_count below zero.

In theory we can hit similar needless runtime suspend/resume cycle
during slave mode adapter registration that was happening when
registering the master mode adapter. See commit cd998ded5c ("i2c:
designware: Prevent runtime suspend during adapter registration").

However, since we are slave, we can consider it as a wrong configuration
if we have other slaves attached under this adapter and can omit the
pm_runtime_get_noresume()/pm_runtime_put_noidle() calls for simplicity.

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Jarkko Nikula 2017-08-15 17:34:44 +03:00 committed by Wolfram Sang
parent f1c0b7e448
commit 733f656397
1 changed files with 0 additions and 1 deletions
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drivers/i2c/busses/i2c-designware-slave.c
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@ -382,7 +382,6 @@ int i2c_dw_probe_slave(struct dw_i2c_dev *dev)
ret = i2c_add_numbered_adapter(adap);
if (ret)
dev_err(dev->dev, "failure adding adapter: %d\n", ret);
pm_runtime_put_noidle(dev->dev);
return ret;
}