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authorMatthias Kaehlcke <matthias.kaehlcke@gmail.com>2007-05-03 20:15:14 -0700
committerWim Van Sebroeck <wim@iguana.be>2007-05-04 06:07:59 +0000
commit9f7afa6b3405a2ceb9403153357564a93f14cde8 (patch)
tree607e01a9ad45d10bc4345f2f41a0d836bebd38f7 /drivers/char/watchdog/pcwd_usb.c
parentdbf379ea9ae878bf88d2b3cf8f74ce4536e25d19 (diff)
[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/char/watchdog/pcwd_usb.c')
-rw-r--r--drivers/char/watchdog/pcwd_usb.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/char/watchdog/pcwd_usb.c b/drivers/char/watchdog/pcwd_usb.c
index 31037f9c9ff..1e7a6719d5b 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);