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authorAndi Kleen <ak@linux.intel.com>2008-09-23 06:18:15 +0400
committerDavid S. Miller <davem@davemloft.net>2008-09-23 06:18:15 +0400
commitce425a9f2c0182e9a9e49c7dc18699f2db4c3f48 (patch)
tree599dd45e4c784cff830888b31c55737b7e250033 /drivers/isdn
parent1532dcb75c238d79c54a037da87c3f495cbf605b (diff)
downloadlinux-ce425a9f2c0182e9a9e49c7dc18699f2db4c3f48.tar.xz
mISDN: misc timerdev fixes
- Remove noop VFS stubs. The VFS does that on a NULL pointer anyways. - Fix timer handler prototype to be correct - Comment ugly SMP race I didn't fix. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/isdn')
-rw-r--r--drivers/isdn/mISDN/timerdev.c22
1 files changed, 6 insertions, 16 deletions
diff --git a/drivers/isdn/mISDN/timerdev.c b/drivers/isdn/mISDN/timerdev.c
index b5fabc7019d8..e7462924b505 100644
--- a/drivers/isdn/mISDN/timerdev.c
+++ b/drivers/isdn/mISDN/timerdev.c
@@ -124,18 +124,6 @@ mISDN_read(struct file *filep, char *buf, size_t count, loff_t *off)
return ret;
}
-static loff_t
-mISDN_llseek(struct file *filep, loff_t offset, int orig)
-{
- return -ESPIPE;
-}
-
-static ssize_t
-mISDN_write(struct file *filep, const char *buf, size_t count, loff_t *off)
-{
- return -EOPNOTSUPP;
-}
-
static unsigned int
mISDN_poll(struct file *filep, poll_table *wait)
{
@@ -157,8 +145,9 @@ mISDN_poll(struct file *filep, poll_table *wait)
}
static void
-dev_expire_timer(struct mISDNtimer *timer)
+dev_expire_timer(unsigned long data)
{
+ struct mISDNtimer *timer = (void *)data;
u_long flags;
spin_lock_irqsave(&timer->dev->lock, flags);
@@ -191,7 +180,7 @@ misdn_add_timer(struct mISDNtimerdev *dev, int timeout)
spin_unlock_irqrestore(&dev->lock, flags);
timer->dev = dev;
timer->tl.data = (long)timer;
- timer->tl.function = (void *) dev_expire_timer;
+ timer->tl.function = dev_expire_timer;
init_timer(&timer->tl);
timer->tl.expires = jiffies + ((HZ * (u_long)timeout) / 1000);
add_timer(&timer->tl);
@@ -211,6 +200,9 @@ misdn_del_timer(struct mISDNtimerdev *dev, int id)
list_for_each_entry(timer, &dev->pending, list) {
if (timer->id == id) {
list_del_init(&timer->list);
+ /* RED-PEN AK: race -- timer can be still running on
+ * other CPU. Needs reference count I think
+ */
del_timer(&timer->tl);
ret = timer->id;
kfree(timer);
@@ -268,9 +260,7 @@ mISDN_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
}
static struct file_operations mISDN_fops = {
- .llseek = mISDN_llseek,
.read = mISDN_read,
- .write = mISDN_write,
.poll = mISDN_poll,
.ioctl = mISDN_ioctl,
.open = mISDN_open,