diff options
| author | Arjan van de Ven <arjan@infradead.org> | 2006-01-12 18:42:23 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-01-12 18:42:23 +0000 |
| commit | 00431707be0cc1236ee08459367872b57da5be29 (patch) | |
| tree | 0a57cbf54f1fcc9ef2852e68e96c3b99e1b903d8 /arch/arm/common | |
| parent | f4619025a51747a3788fd1bb6bdc46e368a889a7 (diff) | |
[ARM] Convert some arm semaphores to mutexes
The arm clock semaphores are strict mutexes, convert them to the new
mutex implementation
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/common')
| -rw-r--r-- | arch/arm/common/rtctime.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/arch/arm/common/rtctime.c b/arch/arm/common/rtctime.c index 72b03f201eb9..00f6278f42b8 100644 --- a/arch/arm/common/rtctime.c +++ b/arch/arm/common/rtctime.c @@ -18,6 +18,7 @@ #include <linux/miscdevice.h> #include <linux/spinlock.h> #include <linux/device.h> +#include <linux/mutex.h> #include <asm/rtc.h> #include <asm/semaphore.h> @@ -34,7 +35,7 @@ static unsigned long rtc_irq_data; /* * rtc_sem protects rtc_inuse and rtc_ops */ -static DECLARE_MUTEX(rtc_sem); +static DEFINE_MUTEX(rtc_mutex); static unsigned long rtc_inuse; static struct rtc_ops *rtc_ops; @@ -355,7 +356,7 @@ static int rtc_open(struct inode *inode, struct file *file) { int ret; - down(&rtc_sem); + mutex_lock(&rtc_mutex); if (rtc_inuse) { ret = -EBUSY; @@ -373,7 +374,7 @@ static int rtc_open(struct inode *inode, struct file *file) rtc_inuse = 1; } } - up(&rtc_sem); + mutex_unlock(&rtc_mutex); return ret; } @@ -479,7 +480,7 @@ int register_rtc(struct rtc_ops *ops) { int ret = -EBUSY; - down(&rtc_sem); + mutex_lock(&rtc_mutex); if (rtc_ops == NULL) { rtc_ops = ops; @@ -488,7 +489,7 @@ int register_rtc(struct rtc_ops *ops) create_proc_read_entry("driver/rtc", 0, NULL, rtc_read_proc, ops); } - up(&rtc_sem); + mutex_unlock(&rtc_mutex); return ret; } @@ -496,12 +497,12 @@ EXPORT_SYMBOL(register_rtc); void unregister_rtc(struct rtc_ops *rtc) { - down(&rtc_sem); + mutex_lock(&rtc_mutex); if (rtc == rtc_ops) { remove_proc_entry("driver/rtc", NULL); misc_deregister(&rtc_miscdev); rtc_ops = NULL; } - up(&rtc_sem); + mutex_unlock(&rtc_mutex); } EXPORT_SYMBOL(unregister_rtc); |