From: Valentine Barshak <vbarshak@mvista.com>
Date: Mon, 6 Dec 2010 15:16:11 +0000 (+0300)
Subject: HID: Consolidate device existence checks in hiddev_ioctl
X-Git-Tag: v2.6.38-rc1~442^2~19
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=33d6eb570b1f3fe5ba93cef465c5be66535c2c9a;p=pandora-kernel.git

HID: Consolidate device existence checks in hiddev_ioctl

Currently, if the device has been removed before hiddev_ioctl(),
the -EIO is returned. If it's removed while hiddev_ioctl() is in
progress, some commands are still processed fine, others
return -ENODEV. This change takes the "existancelock" before
processing ioctl commands and releases it at the end.
If the device has been removed, always returns -ENODEV.

Signed-off-by: Valentine Barshak <vbarshak@mvista.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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