tree 87ad4a1f9f2b5fd48d820949c827fea7264fa885
parent 3a8ab79eae4500e6ac618a92a90cee63d6e804a8
author Florian Mickler <florian@mickler.org> 1305469970 +0200
committer Dave Airlie <airlied@redhat.com> 1305500224 +1000

vga_switcheroo: don't toggle-switch devices

If the requested device is already active, ignore the request.

This restores the original behaviour of the interface. The change was
probably an unintended side effect of

commit 66b37c6777c4 vga_switcheroo: split switching into two stages

which did not take into account to duplicate the !active check in the split-off
stage2.

Fix this by factoring that check out of stage1 into the debugfs_write routine.

References: https://bugzilla.kernel.org/show_bug.cgi?id=34252
Reported-by: Igor Murzov <e-mail@date.by>
Tested-by: Igor Murzov <e-mail@date.by>
Signed-off-by: Florian Mickler <florian@mickler.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>