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| author | Ingo Molnar <mingo@elte.hu> | 2008-07-16 01:12:58 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-16 01:12:58 +0400 |
| commit | 1e09481365ce248dbb4eb06dad70129bb5807037 (patch) | |
| tree | c0cff5bef95c8b5e7486f144718ade9a06c284dc /drivers/isdn/hardware/eicon/divamnt.c | |
| parent | 3e2f69fdd1b00166e7d589bce56b2d36a9e74374 (diff) | |
| parent | b9d2252c1e44fa83a4e65fdc9eb93db6297c55af (diff) | |
| download | linux-1e09481365ce248dbb4eb06dad70129bb5807037.tar.xz | |
Merge branch 'linus' into core/softlockup
Conflicts:
kernel/softlockup.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/isdn/hardware/eicon/divamnt.c')
| -rw-r--r-- | drivers/isdn/hardware/eicon/divamnt.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/isdn/hardware/eicon/divamnt.c b/drivers/isdn/hardware/eicon/divamnt.c index c90928974249..1e85f743214e 100644 --- a/drivers/isdn/hardware/eicon/divamnt.c +++ b/drivers/isdn/hardware/eicon/divamnt.c @@ -14,6 +14,7 @@ #include <linux/init.h> #include <linux/kernel.h> #include <linux/poll.h> +#include <linux/smp_lock.h> #include <asm/uaccess.h> #include "platform.h" @@ -127,14 +128,19 @@ static unsigned int maint_poll(struct file *file, poll_table * wait) static int maint_open(struct inode *ino, struct file *filep) { + int ret; + + lock_kernel(); /* only one open is allowed, so we test it atomically */ if (test_and_set_bit(0, &opened)) - return (-EBUSY); - - filep->private_data = NULL; - - return nonseekable_open(ino, filep); + ret = -EBUSY; + else { + filep->private_data = NULL; + ret = nonseekable_open(ino, filep); + } + unlock_kernel(); + return ret; } static int maint_close(struct inode *ino, struct file *filep) |