From e90f869cae3b4aedf0f6d2ca8048d60245ee77f7 Mon Sep 17 00:00:00 2001 From: Dima Zavin Date: Fri, 30 Dec 2011 15:16:44 -0800 Subject: [PATCH] Input: evdev - if no events and non-block, return EAGAIN not 0 Signed-off-by: Dima Zavin Signed-off-by: Dmitry Torokhov --- drivers/input/evdev.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index 03344b3c7c1..a9d871651ce 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -412,6 +412,9 @@ static ssize_t evdev_read(struct file *file, char __user *buffer, retval += input_event_size(); } + if (retval == 0 && (file->f_flags & O_NONBLOCK)) + return -EAGAIN; + return retval; } -- 2.39.5