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authorBruno Prémont <bonbons@linux-vserver.org>2012-08-19 13:33:02 -0400
committerJiri Kosina <jkosina@suse.cz>2012-09-05 05:48:07 -0400
commit63583c64558853f0fe7f8166907417792d184e18 (patch)
treef77dee08c6f833a64016ec993fe85222e0fd27ee /drivers/hid
parentae08e324146c89f1059e9d3c3898d0260a988795 (diff)
HID: picoLCD: optimize for inactive debugfs
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>
Diffstat (limited to 'drivers/hid')
-rw-r--r--drivers/hid/hid-picolcd_debugfs.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hid/hid-picolcd_debugfs.c b/drivers/hid/hid-picolcd_debugfs.c
index 15c22f2ee748..2c7308c2ae1f 100644
--- a/drivers/hid/hid-picolcd_debugfs.c
+++ b/drivers/hid/hid-picolcd_debugfs.c
@@ -657,7 +657,7 @@ void picolcd_debug_raw_event(struct picolcd_data *data,
657 657
658#define BUFF_SZ 256 658#define BUFF_SZ 256
659 /* Avoid unnecessary overhead if debugfs is disabled */ 659 /* Avoid unnecessary overhead if debugfs is disabled */
660 if (!hdev->debug_events) 660 if (list_empty(&hdev->debug_list))
661 return; 661 return;
662 662
663 buff = kmalloc(BUFF_SZ, GFP_ATOMIC); 663 buff = kmalloc(BUFF_SZ, GFP_ATOMIC);