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From: Anshul@vger.kernel.org, Garg@vger.kernel.org
To: dmitry.torokhov@gmail.com, dtor@mail.ru, linux-input@vger.kernel.org
Cc: aksgarg1989@gmail.com, anshul.g@samsung.com, p.shailesh@samsung.com
Subject: [PATCH] Input: Add check for grabbed device before flushing the device
Date: Tue, 30 Dec 2014 11:02:44 +0530	[thread overview]
Message-ID: <1419917564-14706-1-git-send-email-a.mathur@samsung.com> (raw)

From: Anshul Garg <anshul.g@samsung.com>

If input device is grabbed then client which grabbed the device should only
flush the device and for other clients error should be returned.

Signed-off-by: Anshul Garg <anshul.g@samsung.com>
---
 drivers/input/evdev.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
index fd325ec..70df398 100644
--- a/drivers/input/evdev.c
+++ b/drivers/input/evdev.c
@@ -248,6 +248,8 @@ static int evdev_flush(struct file *file, fl_owner_t id)
 
 	if (!evdev->exist || client->revoked)
 		retval = -ENODEV;
+	else if (evdev->grab != client)
+		retval = -EINVAL;
 	else
 		retval = input_flush_device(&evdev->handle, file);
 
-- 
1.7.9.5


             reply	other threads:[~2014-12-30  5:33 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-12-30  5:32 Anshul, Garg [this message]
  -- strict thread matches above, loose matches on Subject: below --
2014-12-30  5:47 [PATCH] Input: Add check for grabbed device before flushing the device anshul.g

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