[PATCH] umc-bus.c: fix usage of device_trylock

[PATCH] umc-bus.c: fix usage of device_trylock

[Claudio Scordino]

Hi all.

I've probably found a wrong usage of device_trylock inside the driver
umc-bus.c: device_trylock has the same semantics of mutex_trylock, so it
returns 1 if the lock has been acquired successfully.

Please, find below a patch.

Best regards,

	Claudio


Subject: umc-bus.c: fix usage of device_trylock
From: Claudio Scordino <claudio@evidence.eu.com>

device_trylock 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>
---
  drivers/uwb/umc-bus.c |    2 +-
  1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/uwb/umc-bus.c b/drivers/uwb/umc-bus.c
index 82a84d5..5c5b3fc 100644
--- a/drivers/uwb/umc-bus.c
+++ b/drivers/uwb/umc-bus.c
@@ -63,7 +63,7 @@ int umc_controller_reset(struct umc_dev *umc)
  	struct device *parent = umc->dev.parent;
  	int ret = 0;
  
-	if (device_trylock(parent))
+	if (!device_trylock(parent))
  		return -EAGAIN;
  	ret = device_for_each_child(parent, parent, umc_bus_pre_reset_helper);
  	if (ret >= 0)
-- 
1.7.1