From: vibi sreenivasan <vibi_sreenivasan@cms.com>
Date: Thu, 4 Jun 2009 15:29:17 +0000 (+0530)
Subject: Staging: rspiusb: copy_to/from_user related fixes
X-Git-Tag: v2.6.31-rc1~105^2~34
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7a80bfcd1f4bac61d586d3551f74215ff02e9cba;p=pandora-kernel.git

Staging: rspiusb: copy_to/from_user related fixes

The patch does copy_to/from_user related fixes

*) __copy_from/to_user is enough for user space data buffer checked by access_ok.
*) return -EFAULT if __copy_from/to_user fails.
*) Do not use memcpy to copy from user space.

Signed-off-by: Vibi Sreenivasan <vibi_sreenivasan@cms.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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