diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-07-18 19:53:16 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-07-18 19:53:16 +0200 |
commit | 9b610fda0df5d0f0b0c64242e37441ad1b384aac (patch) | |
tree | 0ea14b15f2e6546f37fe18d8ac3dc83077ec0e55 /drivers/char/mbcs.c | |
parent | b8f8c3cf0a4ac0632ec3f0e15e9dc0c29de917af (diff) | |
parent | 5b664cb235e97afbf34db9c4d77f08ebd725335e (diff) |
Merge branch 'linus' into timers/nohz
Diffstat (limited to 'drivers/char/mbcs.c')
-rw-r--r-- | drivers/char/mbcs.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/char/mbcs.c b/drivers/char/mbcs.c index f4716ad7348a..acd8e9ed474a 100644 --- a/drivers/char/mbcs.c +++ b/drivers/char/mbcs.c @@ -24,6 +24,7 @@ #include <linux/mm.h> #include <linux/uio.h> #include <linux/mutex.h> +#include <linux/smp_lock.h> #include <asm/io.h> #include <asm/uaccess.h> #include <asm/system.h> @@ -382,15 +383,19 @@ static int mbcs_open(struct inode *ip, struct file *fp) struct mbcs_soft *soft; int minor; + lock_kernel(); minor = iminor(ip); + /* Nothing protects access to this list... */ list_for_each_entry(soft, &soft_list, list) { if (soft->nasid == minor) { fp->private_data = soft->cxdev; + unlock_kernel(); return 0; } } + unlock_kernel(); return -ENODEV; } |