commit 56fa94415b8a1a163e24a105fb5bdadc625c1d2a
author Bruno Prémont <bonbons@linux-vserver.org> Sun Sep 30 22:04:19 2012 +0200
committer Jiri Kosina <jkosina@suse.cz> Mon Oct 01 10:25:01 2012 +0200
tree b1a91eb5032c56267427de1ea6c8859903e2a46c
parent 5ed84c341c25accc61410cfb53a45170f8fb19e4

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.

His change got lost while splitting hid_picolcd.c, restore it.

Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/hid-picolcd_debugfs.c

diff --git a/drivers/hid/hid-picolcd_debugfs.c b/drivers/hid/hid-picolcd_debugfs.c
index 6ef03be..4809aa1 100644
--- a/drivers/hid/hid-picolcd_debugfs.c
+++ b/drivers/hid/hid-picolcd_debugfs.c
@@ -402,7 +402,7 @@
 #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);