The removal of the timer which polls the infrared input is racy.
Replacing the timer with a delayed work solves the problem.
Signed-off-by: Jean Delvare <kh...@linux-fr.org>
---
linux/drivers/media/video/saa6588.c | 26 +++++++-------------------
1 file changed, 7 insertions(+), 19 deletions(-)
--- v4l-dvb.orig/linux/drivers/media/video/saa6588.c 2009-03-06
13:59:37.000000000 +0100
+++ v4l-dvb/linux/drivers/media/video/saa6588.c 2009-03-06 14:02:50.000000000
+0100
@@ -77,8 +77,7 @@ MODULE_LICENSE("GPL");
struct saa6588 {
struct v4l2_subdev sd;
- struct work_struct work;
- struct timer_list timer;
+ struct delayed_work work;
spinlock_t lock;
unsigned char *buffer;
unsigned int buf_size;
@@ -323,13 +322,6 @@ static void saa6588_i2c_poll(struct saa6
wake_up_interruptible(&s->read_queue);
}
-static void saa6588_timer(unsigned long data)
-{
- struct saa6588 *s = (struct saa6588 *)data;
-
- schedule_work(&s->work);
-}
-
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
static void saa6588_work(void *data)
#else
@@ -339,11 +331,11 @@ static void saa6588_work(struct work_str
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
struct saa6588 *s = (struct saa6588 *)data;
#else
- struct saa6588 *s = container_of(work, struct saa6588, work);
+ struct saa6588 *s = container_of(work, struct saa6588, work.work);
#endif
saa6588_i2c_poll(s);
- mod_timer(&s->timer, jiffies + msecs_to_jiffies(20));
+ schedule_delayed_work(&s->work, msecs_to_jiffies(20));
}
static int saa6588_configure(struct saa6588 *s)
@@ -500,14 +492,11 @@ static int saa6588_probe(struct i2c_clie
/* start polling via eventd */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20)
- INIT_WORK(&s->work, saa6588_work, s);
+ INIT_DELAYED_WORK(&s->work, saa6588_work, s);
#else
- INIT_WORK(&s->work, saa6588_work);
+ INIT_DELAYED_WORK(&s->work, saa6588_work);
#endif
- init_timer(&s->timer);
- s->timer.function = saa6588_timer;
- s->timer.data = (unsigned long)s;
- schedule_work(&s->work);
+ schedule_delayed_work(&s->work, 0);
return 0;
}
@@ -518,8 +507,7 @@ static int saa6588_remove(struct i2c_cli
v4l2_device_unregister_subdev(sd);
- del_timer_sync(&s->timer);
- flush_scheduled_work();
+ cancel_delayed_work_sync(&s->work);
kfree(s->buffer);
kfree(s);
--
Jean Delvare
--
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