diff options
Diffstat (limited to 'arch/cris/arch-v10/drivers/ds1302.c')
| -rw-r--r-- | arch/cris/arch-v10/drivers/ds1302.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/cris/arch-v10/drivers/ds1302.c b/arch/cris/arch-v10/drivers/ds1302.c index 884275629ef..3d655dcc65d 100644 --- a/arch/cris/arch-v10/drivers/ds1302.c +++ b/arch/cris/arch-v10/drivers/ds1302.c @@ -19,7 +19,7 @@ #include <linux/module.h> #include <linux/miscdevice.h> #include <linux/delay.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/bcd.h> #include <linux/capability.h> @@ -34,6 +34,7 @@ #define RTC_MAJOR_NR 121 /* local major, change later */ +static DEFINE_MUTEX(ds1302_mutex); static const char ds1302_name[] = "ds1302"; /* The DS1302 might be connected to different bits on different products. @@ -357,9 +358,9 @@ static long rtc_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned lon { int ret; - lock_kernel(); + mutex_lock(&ds1302_mutex); ret = rtc_ioctl(file, cmd, arg); - unlock_kernel(); + mutex_unlock(&ds1302_mutex); return ret; } @@ -387,6 +388,7 @@ print_rtc_status(void) static const struct file_operations rtc_fops = { .owner = THIS_MODULE, .unlocked_ioctl = rtc_unlocked_ioctl, + .llseek = noop_llseek, }; /* Probe for the chip by writing something to its RAM and try reading it back. */ |