Hi,
this fixes the spinlock recursion issue. The older fix was incomplete.
Regards
Oliver
Signed-off-by: Oliver Neukum <[EMAIL PROTECTED]>
-----
--- a/drivers/usb/class/cdc-acm.c 2007-03-06 10:39:50.000000000 +0100
+++ b/drivers/usb/class/cdc-acm.c 2007-03-06 10:39:55.000000000 +0100
@@ -332,9 +332,9 @@
if (!ACM_READY(acm))
return;
- spin_lock(&acm->throttle_lock);
+ spin_lock_irqsave(&acm->throttle_lock, flags);
throttled = acm->throttle;
- spin_unlock(&acm->throttle_lock);
+ spin_unlock_irqrestore(&acm->throttle_lock, flags);
if (throttled)
return;
@@ -352,9 +352,9 @@
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;
- 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);
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