diff options
Diffstat (limited to 'drivers/block/aoe/aoechr.c')
| -rw-r--r-- | drivers/block/aoe/aoechr.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/block/aoe/aoechr.c b/drivers/block/aoe/aoechr.c index e8e60e7a2e70..d1de68a31920 100644 --- a/drivers/block/aoe/aoechr.c +++ b/drivers/block/aoe/aoechr.c @@ -7,6 +7,7 @@ #include <linux/hdreg.h> #include <linux/blkdev.h> #include <linux/delay.h> +#include <linux/smp_lock.h> #include "aoe.h" enum { @@ -174,12 +175,16 @@ aoechr_open(struct inode *inode, struct file *filp) { int n, i; + lock_kernel(); n = iminor(inode); filp->private_data = (void *) (unsigned long) n; for (i = 0; i < ARRAY_SIZE(chardevs); ++i) - if (chardevs[i].minor == n) + if (chardevs[i].minor == n) { + unlock_kernel(); return 0; + } + unlock_kernel(); return -EINVAL; } |