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vt_ioctl: return -EFAULT on copy_from_user errors
authorDan Carpenter <error27@gmail.com>
Fri, 4 Jun 2010 10:20:46 +0000 (12:20 +0200)
committerGreg Kroah-Hartman <gregkh@suse.de>
Fri, 4 Jun 2010 20:37:18 +0000 (13:37 -0700)
copy_from_user() returns the number of bytes remaining but we want to
return a negative error code here.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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