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Message-Id: <1388664474-1710039-12-git-send-email-arnd@arndb.de>
Date:	Thu,  2 Jan 2014 13:07:35 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-kernel@...r.kernel.org
Cc:	Arnd Bergmann <arnd@...db.de>, devel@...verdev.osuosl.org,
	Willy Tarreau <willy@...a-x.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH, RFC 11/30] staging: panel: fix interruptible_sleep_on race

interruptible_sleep_on is racy and going away. This replaces the one
caller in the panel driver with the appropriate wait_event_interruptible
variant.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
Cc: devel@...verdev.osuosl.org
Cc: Willy Tarreau <willy@...a-x.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/staging/panel/panel.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/panel/panel.c b/drivers/staging/panel/panel.c
index cbc15c1..ec4b1fd 100644
--- a/drivers/staging/panel/panel.c
+++ b/drivers/staging/panel/panel.c
@@ -1590,8 +1590,8 @@ static ssize_t keypad_read(struct file *file,
 		if (file->f_flags & O_NONBLOCK)
 			return -EAGAIN;
 
-		interruptible_sleep_on(&keypad_read_wait);
-		if (signal_pending(current))
+		if (wait_event_interruptible(keypad_read_wait,
+					     keypad_buflen != 0))
 			return -EINTR;
 	}
 
-- 
1.8.3.2

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