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 <[email protected]>
--
diff --git a/drivers/char/watchdog/pcwd_usb.c b/drivers/char/watchdog/pcwd_usb.c
index 31037f9..1e7a671 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);
--
Matthias Kaehlcke
Linux Application Developer
Barcelona
An ounce of practice is worth more than tons of preaching
(Mahatma Gandhi)
.''`.
using free software / Debian GNU/Linux | http://debian.org : :' :
`. `'`
gpg --keyserver pgp.mit.edu --recv-keys 47D8E5D4 `-
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
