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authorMathieu Segaud <mathieu.segaud@regala.cx>2008-01-14 15:43:18 +0100
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-01-23 11:29:28 -0600
commitf7fea185d2998dc4c902ec47834ab6db28fe0029 (patch)
treefdcbd91c4007ac3f4a7b98f2410f7eba546d5cb5 /drivers/scsi/ch.c
parenteaa3e22e8d32bf7a6176f04efad90f4a5aa67f58 (diff)
[SCSI] ch: Convert to use unlocked_ioctl
As of now, compat_ioctl already runs without the BKL, whereas ioctl runs with the BKL. This patch first converts changer_fops to use a .unlocked_ioctl member. It applies the same locking rationale than ch_ioctl_compat() uses to ch_ioctl(). Signed-off-by: Mathieu Segaud <mathieu.segaud@regala.cx> Reviewed-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/ch.c')
-rw-r--r--drivers/scsi/ch.c18
1 files changed, 8 insertions, 10 deletions
diff --git a/drivers/scsi/ch.c b/drivers/scsi/ch.c
index 2311019304c..cead0f5379c 100644
--- a/drivers/scsi/ch.c
+++ b/drivers/scsi/ch.c
@@ -92,8 +92,7 @@ static int ch_probe(struct device *);
static int ch_remove(struct device *);
static int ch_open(struct inode * inode, struct file * filp);
static int ch_release(struct inode * inode, struct file * filp);
-static int ch_ioctl(struct inode * inode, struct file * filp,
- unsigned int cmd, unsigned long arg);
+static long ch_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
#ifdef CONFIG_COMPAT
static long ch_ioctl_compat(struct file * filp,
unsigned int cmd, unsigned long arg);
@@ -130,12 +129,12 @@ static struct scsi_driver ch_template =
static const struct file_operations changer_fops =
{
- .owner = THIS_MODULE,
- .open = ch_open,
- .release = ch_release,
- .ioctl = ch_ioctl,
+ .owner = THIS_MODULE,
+ .open = ch_open,
+ .release = ch_release,
+ .unlocked_ioctl = ch_ioctl,
#ifdef CONFIG_COMPAT
- .compat_ioctl = ch_ioctl_compat,
+ .compat_ioctl = ch_ioctl_compat,
#endif
};
@@ -626,7 +625,7 @@ ch_checkrange(scsi_changer *ch, unsigned int type, unsigned int unit)
return 0;
}
-static int ch_ioctl(struct inode * inode, struct file * file,
+static long ch_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
scsi_changer *ch = file->private_data;
@@ -887,8 +886,7 @@ static long ch_ioctl_compat(struct file * file,
case CHIOINITELEM:
case CHIOSVOLTAG:
/* compatible */
- return ch_ioctl(NULL /* inode, unused */,
- file, cmd, arg);
+ return ch_ioctl(file, cmd, arg);
case CHIOGSTATUS32:
{
struct changer_element_status32 ces32;