this fixes the spinlock recursion issue. The older fix was incomplete.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Acked-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
if (!ACM_READY(acm))
return;
if (!ACM_READY(acm))
return;
- spin_lock(&acm->throttle_lock);
+ spin_lock_irqsave(&acm->throttle_lock, flags);
throttled = acm->throttle;
throttled = acm->throttle;
- spin_unlock(&acm->throttle_lock);
+ spin_unlock_irqrestore(&acm->throttle_lock, flags);
dbg("acm_rx_tasklet: procesing buf 0x%p, size = %d", buf, buf->size);
tty_buffer_request_room(tty, buf->size);
dbg("acm_rx_tasklet: procesing buf 0x%p, size = %d", buf, buf->size);
tty_buffer_request_room(tty, buf->size);
- spin_lock(&acm->throttle_lock);
+ spin_lock_irqsave(&acm->throttle_lock, flags);
throttled = acm->throttle;
throttled = acm->throttle;
- spin_unlock(&acm->throttle_lock);
+ spin_unlock_irqrestore(&acm->throttle_lock, flags);
if (!throttled)
tty_insert_flip_string(tty, buf->base, buf->size);
tty_flip_buffer_push(tty);
if (!throttled)
tty_insert_flip_string(tty, buf->base, buf->size);
tty_flip_buffer_push(tty);