[ 101.457944] ------------[ cut here ]------------
[ 101.457954] WARNING: CPU: 3 PID: 1819 at kernel/sched/core.c:7708 __might_sleep+0x7e/0x80
[ 101.457960] do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffffc0364bc2>] lirc_dev_fop_read+0x292/0x4e0 [lirc_dev]
Signed-off-by: Sean Young <sean@xxxxxxxx>
---
drivers/media/rc/lirc_dev.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
index 91f9bb8..bf4309f 100644
--- a/drivers/media/rc/lirc_dev.c
+++ b/drivers/media/rc/lirc_dev.c
@@ -684,7 +684,6 @@ ssize_t lirc_dev_fop_read(struct file *file,
* between while condition checking and scheduling)
*/
add_wait_queue(&ir->buf->wait_poll, &wait);
- set_current_state(TASK_INTERRUPTIBLE);
/*
* while we didn't provide 'length' bytes, device is opened in blocking
@@ -709,13 +708,13 @@ ssize_t lirc_dev_fop_read(struct file *file,
}
mutex_unlock(&ir->irctl_lock);
- schedule();
set_current_state(TASK_INTERRUPTIBLE);
+ schedule();
+ set_current_state(TASK_RUNNING);
if (mutex_lock_interruptible(&ir->irctl_lock)) {
ret = -ERESTARTSYS;
remove_wait_queue(&ir->buf->wait_poll, &wait);
- set_current_state(TASK_RUNNING);
goto out_unlocked;
}
@@ -735,7 +734,6 @@ ssize_t lirc_dev_fop_read(struct file *file,
}
remove_wait_queue(&ir->buf->wait_poll, &wait);
- set_current_state(TASK_RUNNING);
out_locked:
mutex_unlock(&ir->irctl_lock);
--
2.7.4
--
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