diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-07-25 13:08:16 +0200 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2008-07-25 13:08:16 +0200 |
commit | 10a010f6953b5a14ba2f0be40a4fce1bea220875 (patch) | |
tree | 19aadf718c796bc7fae0a1a1c970d84d67c541d4 /drivers/hid/usbhid/hiddev.c | |
parent | 510b37258dfd61693ca6c039865c78bd996e3718 (diff) | |
parent | fb2e405fc1fc8b20d9c78eaa1c7fd5a297efde43 (diff) |
Merge branch 'linus' into x86/x2apic
Conflicts:
drivers/pci/dmar.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/hid/usbhid/hiddev.c')
-rw-r--r-- | drivers/hid/usbhid/hiddev.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c index 95cc192bc7a..842e9edb888 100644 --- a/drivers/hid/usbhid/hiddev.c +++ b/drivers/hid/usbhid/hiddev.c @@ -406,6 +406,7 @@ static noinline int hiddev_ioctl_usage(struct hiddev *hiddev, unsigned int cmd, uref_multi = kmalloc(sizeof(struct hiddev_usage_ref_multi), GFP_KERNEL); if (!uref_multi) return -ENOMEM; + lock_kernel(); uref = &uref_multi->uref; if (cmd == HIDIOCGUSAGES || cmd == HIDIOCSUSAGES) { if (copy_from_user(uref_multi, user_arg, @@ -501,12 +502,15 @@ static noinline int hiddev_ioctl_usage(struct hiddev *hiddev, unsigned int cmd, } goodreturn: + unlock_kernel(); kfree(uref_multi); return 0; fault: + unlock_kernel(); kfree(uref_multi); return -EFAULT; inval: + unlock_kernel(); kfree(uref_multi); return -EINVAL; } @@ -540,7 +544,7 @@ static noinline int hiddev_ioctl_string(struct hiddev *hiddev, unsigned int cmd, return len; } -static int hiddev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) +static long hiddev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { struct hiddev_list *list = file->private_data; struct hiddev *hiddev = list->hiddev; @@ -555,7 +559,10 @@ static int hiddev_ioctl(struct inode *inode, struct file *file, unsigned int cmd struct usbhid_device *usbhid = hid->driver_data; void __user *user_arg = (void __user *)arg; int i; + + /* Called without BKL by compat methods so no BKL taken */ + /* FIXME: Who or what stop this racing with a disconnect ?? */ if (!hiddev->exist) return -EIO; @@ -756,8 +763,7 @@ static int hiddev_ioctl(struct inode *inode, struct file *file, unsigned int cmd #ifdef CONFIG_COMPAT static long hiddev_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { - struct inode *inode = file->f_path.dentry->d_inode; - return hiddev_ioctl(inode, file, cmd, (unsigned long)compat_ptr(arg)); + return hiddev_ioctl(file, cmd, (unsigned long)compat_ptr(arg)); } #endif @@ -768,7 +774,7 @@ static const struct file_operations hiddev_fops = { .poll = hiddev_poll, .open = hiddev_open, .release = hiddev_release, - .ioctl = hiddev_ioctl, + .unlocked_ioctl = hiddev_ioctl, .fasync = hiddev_fasync, #ifdef CONFIG_COMPAT .compat_ioctl = hiddev_compat_ioctl, |