diff mbox

[4/6] HID: picoLCD: optimize for inactive debugfs

Message ID 20120819193302.71e682e9@neptune.home (mailing list archive)
State New, archived
Delegated to: Jiri Kosina
Headers show

Commit Message

Bruno Prémont Aug. 19, 2012, 5:33 p.m. UTC 
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>
---
 drivers/hid/hid-picolcd_debugfs.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
diff mbox

Patch

diff --git a/drivers/hid/hid-picolcd_debugfs.c b/drivers/hid/hid-picolcd_debugfs.c
index f18a4c2..dbefab7 100644
--- a/drivers/hid/hid-picolcd_debugfs.c
+++ b/drivers/hid/hid-picolcd_debugfs.c
@@ -656,7 +656,7 @@  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);