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HID: picoLCD: optimize for inactive debugfs

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Matthieu CASTET adjusted picolcd_debug_out_report() to only operate when
there is an active listener on debugfs for events.

Do the same on the more important picolcd_debug_raw_event() that is
called in interrupt context as opposed to picolcd_debug_out_report()
which happens in whichever context that sends reports to device.

Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Bruno Prémont 2012-08-19 19:33:02 +02:00 committed by Jiri Kosina
parent ae08e32414
commit 63583c6455
1 changed files with 1 additions and 1 deletions
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drivers/hid/hid-picolcd_debugfs.c
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@ -657,7 +657,7 @@ void picolcd_debug_raw_event(struct picolcd_data *data,
#define BUFF_SZ 256
/* Avoid unnecessary overhead if debugfs is disabled */
if (!hdev->debug_events)
if (list_empty(&hdev->debug_list))
return;
buff = kmalloc(BUFF_SZ, GFP_ATOMIC);