diff options
Diffstat (limited to 'arch/x86/kernel/apm_32.c')
| -rw-r--r-- | arch/x86/kernel/apm_32.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kernel/apm_32.c b/arch/x86/kernel/apm_32.c index 00e6d1370954..75cb5da4ea0a 100644 --- a/arch/x86/kernel/apm_32.c +++ b/arch/x86/kernel/apm_32.c @@ -204,6 +204,7 @@ #include <linux/module.h> #include <linux/poll.h> +#include <linux/smp_lock.h> #include <linux/types.h> #include <linux/stddef.h> #include <linux/timer.h> @@ -1549,10 +1550,12 @@ static int do_open(struct inode *inode, struct file *filp) { struct apm_user *as; + lock_kernel(); as = kmalloc(sizeof(*as), GFP_KERNEL); if (as == NULL) { printk(KERN_ERR "apm: cannot allocate struct of size %d bytes\n", sizeof(*as)); + unlock_kernel(); return -ENOMEM; } as->magic = APM_BIOS_MAGIC; @@ -1574,6 +1577,7 @@ static int do_open(struct inode *inode, struct file *filp) user_list = as; spin_unlock(&user_list_lock); filp->private_data = as; + unlock_kernel(); return 0; } |