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| author | Ingo Molnar <mingo@elte.hu> | 2008-07-16 00:29:07 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-16 00:29:07 +0200 |
| commit | 82638844d9a8581bbf33201cc209a14876eca167 (patch) | |
| tree | 961d7f9360194421a71aa644a9d0c176a960ce49 /drivers/char/genrtc.c | |
| parent | 9982fbface82893e77d211fbabfbd229da6bdde6 (diff) | |
| parent | 63cf13b77ab785e87c867defa8545e6d4a989774 (diff) | |
| download | talos-obmc-linux-82638844d9a8581bbf33201cc209a14876eca167.tar.gz talos-obmc-linux-82638844d9a8581bbf33201cc209a14876eca167.zip | |
Merge branch 'linus' into cpus4096
Conflicts:
arch/x86/xen/smp.c
kernel/sched_rt.c
net/iucv/iucv.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/char/genrtc.c')
| -rw-r--r-- | drivers/char/genrtc.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/char/genrtc.c b/drivers/char/genrtc.c index 69f0a2993af0..aac0985a572b 100644 --- a/drivers/char/genrtc.c +++ b/drivers/char/genrtc.c @@ -51,6 +51,7 @@ #include <linux/init.h> #include <linux/poll.h> #include <linux/proc_fs.h> +#include <linux/smp_lock.h> #include <linux/workqueue.h> #include <asm/uaccess.h> @@ -338,12 +339,16 @@ static int gen_rtc_ioctl(struct inode *inode, struct file *file, static int gen_rtc_open(struct inode *inode, struct file *file) { - if (gen_rtc_status & RTC_IS_OPEN) + lock_kernel(); + if (gen_rtc_status & RTC_IS_OPEN) { + unlock_kernel(); return -EBUSY; + } gen_rtc_status |= RTC_IS_OPEN; gen_rtc_irq_data = 0; irq_active = 0; + unlock_kernel(); return 0; } |
