diff options
Diffstat (limited to 'drivers/usb/core')
| -rw-r--r-- | drivers/usb/core/devio.c | 2 | ||||
| -rw-r--r-- | drivers/usb/core/file.c | 3 |
2 files changed, 5 insertions, 0 deletions
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index de17738f3ac..9218cca2104 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -565,6 +565,7 @@ static int usbdev_open(struct inode *inode, struct file *file) struct dev_state *ps; int ret; + lock_kernel(); /* Protect against simultaneous removal or release */ mutex_lock(&usbfs_mutex); @@ -611,6 +612,7 @@ static int usbdev_open(struct inode *inode, struct file *file) if (ret) kfree(ps); mutex_unlock(&usbfs_mutex); + unlock_kernel(); return ret; } diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c index 8133c99c6c5..c6a95395e52 100644 --- a/drivers/usb/core/file.c +++ b/drivers/usb/core/file.c @@ -18,6 +18,7 @@ #include <linux/module.h> #include <linux/errno.h> #include <linux/rwsem.h> +#include <linux/smp_lock.h> #include <linux/usb.h> #include "usb.h" @@ -33,6 +34,7 @@ static int usb_open(struct inode * inode, struct file * file) int err = -ENODEV; const struct file_operations *old_fops, *new_fops = NULL; + lock_kernel(); down_read(&minor_rwsem); c = usb_minors[minor]; @@ -51,6 +53,7 @@ static int usb_open(struct inode * inode, struct file * file) fops_put(old_fops); done: up_read(&minor_rwsem); + unlock_kernel(); return err; } |