diff options
| author | Jonathan Corbet <corbet@lwn.net> | 2008-05-16 14:15:33 -0600 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2008-06-20 14:05:52 -0600 |
| commit | a237f3bbaab28bb780201f15f6003cf3d2e81024 (patch) | |
| tree | ef5991cea90e678bf2476f168a31061d2f15803e | |
| parent | b0061a0ec4d10a69309d0371a01e8b99387009ef (diff) | |
CAPI: BKL pushdown
Put explicit lock_kernel() calls into capi_open()
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| -rw-r--r-- | drivers/isdn/capi/capi.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c index 6ca0bb949ad..2095153582f 100644 --- a/drivers/isdn/capi/capi.c +++ b/drivers/isdn/capi/capi.c @@ -20,6 +20,7 @@ #include <linux/signal.h> #include <linux/mutex.h> #include <linux/mm.h> +#include <linux/smp_lock.h> #include <linux/timer.h> #include <linux/wait.h> #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE @@ -983,13 +984,17 @@ capi_ioctl(struct inode *inode, struct file *file, static int capi_open(struct inode *inode, struct file *file) { + int ret; + + lock_kernel(); if (file->private_data) - return -EEXIST; - - if ((file->private_data = capidev_alloc()) == NULL) - return -ENOMEM; - - return nonseekable_open(inode, file); + ret = -EEXIST; + else if ((file->private_data = capidev_alloc()) == NULL) + ret = -ENOMEM; + else + ret = nonseekable_open(inode, file); + unlock_kernel(); + return ret; } static int |