diff options
| author | Matthias Kaehlcke <matthias.kaehlcke@gmail.com> | 2007-05-03 20:15:14 -0700 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2007-05-04 06:07:59 +0000 |
| commit | 9f7afa6b3405a2ceb9403153357564a93f14cde8 (patch) | |
| tree | 607e01a9ad45d10bc4345f2f41a0d836bebd38f7 /drivers | |
| parent | dbf379ea9ae878bf88d2b3cf8f74ce4536e25d19 (diff) | |
| download | blackbird-obmc-linux-9f7afa6b3405a2ceb9403153357564a93f14cde8.tar.gz blackbird-obmc-linux-9f7afa6b3405a2ceb9403153357564a93f14cde8.zip | |
[WATCHDOG] use mutex instead of semaphore in Berkshire USB-PC Watchdog driver
The Berkshire USB-PC Watchdog driver uses a semaphore as mutex. Use the mutex
API instead of the (binary) semaphore.
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/char/watchdog/pcwd_usb.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/char/watchdog/pcwd_usb.c b/drivers/char/watchdog/pcwd_usb.c index 31037f9c9ffe..1e7a6719d5ba 100644 --- a/drivers/char/watchdog/pcwd_usb.c +++ b/drivers/char/watchdog/pcwd_usb.c @@ -146,7 +146,7 @@ struct usb_pcwd_private { atomic_t cmd_received; /* true if we received a report after a command */ int exists; /* Wether or not the device exists */ - struct semaphore sem; /* locks this structure */ + struct mutex mtx; /* locks this structure */ }; static struct usb_pcwd_private *usb_pcwd_device; @@ -635,7 +635,7 @@ static int usb_pcwd_probe(struct usb_interface *interface, const struct usb_devi usb_pcwd_device = usb_pcwd; - init_MUTEX (&usb_pcwd->sem); + mutex_init(&usb_pcwd->mtx); usb_pcwd->udev = udev; usb_pcwd->interface = interface; usb_pcwd->interface_number = iface_desc->desc.bInterfaceNumber; @@ -763,7 +763,7 @@ static void usb_pcwd_disconnect(struct usb_interface *interface) usb_pcwd = usb_get_intfdata (interface); usb_set_intfdata (interface, NULL); - down (&usb_pcwd->sem); + mutex_lock(&usb_pcwd->mtx); /* Stop the timer before we leave */ if (!nowayout) @@ -777,7 +777,7 @@ static void usb_pcwd_disconnect(struct usb_interface *interface) misc_deregister(&usb_pcwd_temperature_miscdev); unregister_reboot_notifier(&usb_pcwd_notifier); - up (&usb_pcwd->sem); + mutex_unlock(&usb_pcwd->mtx); /* Delete the USB PCWD device */ usb_pcwd_delete(usb_pcwd); |
