Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=10c0ad...
Commit: 10c0ad4dd9ecc3d4141fecbe74c9f18d7f904fb7
Parent: 74f0609526afddd88bef40b651da24f3167b10b2
Author: Stephen Rothwell <sfr@canb.auug.org.au>
AuthorDate: Fri May 23 15:12:23 2008 +1000
Committer: Paul Mackerras <paulus@samba.org>
CommitDate: Mon Jun 30 22:30:26 2008 +1000
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>
---
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 c39ddaf..d4db42c 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 */
--
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