umc-bus.c: fix usage of device_trylock
Fix usage of device_trylock. It has the same semantics of mutex_trylock, so it returns 1 if the lock has been acquired successfully. Signed-off-by: Claudio Scordino <claudio@evidence.eu.com> Signed-off-by: Bruno Morelli <bruno@evidence.eu.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -63,7 +63,7 @@ int umc_controller_reset(struct umc_dev *umc)
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struct device *parent = umc->dev.parent;
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struct device *parent = umc->dev.parent;
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int ret = 0;
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int ret = 0;
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if (device_trylock(parent))
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if (!device_trylock(parent))
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return -EAGAIN;
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return -EAGAIN;
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ret = device_for_each_child(parent, parent, umc_bus_pre_reset_helper);
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ret = device_for_each_child(parent, parent, umc_bus_pre_reset_helper);
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if (ret >= 0)
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if (ret >= 0)
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