diff options
| author | Stephen Rothwell <sfr@canb.auug.org.au> | 2008-05-23 07:12:23 +0200 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-06-30 14:30:26 +0200 |
| commit | 10c0ad4dd9ecc3d4141fecbe74c9f18d7f904fb7 (patch) | |
| tree | eb4a1938df580931989a94e03f29b1a51c975f36 /drivers/char/viotape.c | |
| parent | powerpc: Optimise smp_wmb on 64-bit processors (diff) | |
| download | linux-10c0ad4dd9ecc3d4141fecbe74c9f18d7f904fb7.tar.xz linux-10c0ad4dd9ecc3d4141fecbe74c9f18d7f904fb7.zip | |
viotape: Use unlocked_ioctl
This pushes the BKL down into the driver. Based on a patch by Alan Cox.
We need to do it this way for now as the inode parameter of viotap_ioctl
is used internally as a flag. We should do a further cleanup patch.
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'drivers/char/viotape.c')
| -rw-r--r-- | drivers/char/viotape.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/drivers/char/viotape.c b/drivers/char/viotape.c index c39ddaff5e8f..d4db42ca71e6 100644 --- a/drivers/char/viotape.c +++ b/drivers/char/viotape.c @@ -46,6 +46,7 @@ #include <linux/completion.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> +#include <linux/smp_lock.h> #include <asm/uaccess.h> #include <asm/ioctls.h> @@ -677,6 +678,17 @@ free_op: return ret; } +static long viotap_unlocked_ioctl(struct file *file, + unsigned int cmd, unsigned long arg) +{ + long rc; + + lock_kernel(); + rc = viotap_ioctl(file->f_path.dentry->d_inode, file, cmd, arg); + unlock_kernel(); + return rc; +} + static int viotap_open(struct inode *inode, struct file *file) { HvLpEvent_Rc hvrc; @@ -783,12 +795,12 @@ free_op: } const struct file_operations viotap_fops = { - .owner = THIS_MODULE, - .read = viotap_read, - .write = viotap_write, - .ioctl = viotap_ioctl, - .open = viotap_open, - .release = viotap_release, + .owner = THIS_MODULE, + .read = viotap_read, + .write = viotap_write, + .unlocked_ioctl = viotap_unlocked_ioctl, + .open = viotap_open, + .release = viotap_release, }; /* Handle interrupt events for tape */ |