From: "Bruno Prémont" <bonbons@linux-vserver.org>
To: Jiri Kosina <jkosina@suse.cz>
Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: HID: picoLCD: optimize for inactive debugfs
Date: Sun, 30 Sep 2012 22:04:19 +0200 [thread overview]
Message-ID: <20120930220419.01408e0e@neptune.home> (raw)
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>
---
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 @@ void picolcd_debug_out_report(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);
next reply other threads:[~2012-09-30 20:05 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-30 20:04 Bruno Prémont [this message]
2012-10-01 8:25 ` Jiri Kosina
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