From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: Wed, 4 Mar 2009 08:52:20 +0000 (-0800)
Subject: Input: fix polling of /proc/bus/input/devices
X-Git-Tag: v2.6.30-rc2~71^2^2~14
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=fa88661224946145819a904cef2ec7dd5c9c78bc;p=karo-tx-linux.git

Input: fix polling of /proc/bus/input/devices

Tested-by: Alessio Sangalli <alesan@manoweb.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
---

diff --git a/drivers/input/input.c b/drivers/input/input.c
index 46e9ce195064..913392f63f76 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -744,11 +744,11 @@ static inline void input_wakeup_procfs_readers(void)
 
 static unsigned int input_proc_devices_poll(struct file *file, poll_table *wait)
 {
-	int state = input_devices_state;
-
 	poll_wait(file, &input_devices_poll_wait, wait);
-	if (state != input_devices_state)
+	if (file->f_version != input_devices_state) {
+		file->f_version = input_devices_state;
 		return POLLIN | POLLRDNORM;
+	}
 
 	return 0;
 }