vga_switcheroo: don't toggle-switch devices
authorFlorian Mickler <florian@mickler.org>
Sun, 15 May 2011 14:32:50 +0000 (16:32 +0200)
committerDave Airlie <airlied@redhat.com>
Sun, 15 May 2011 22:57:04 +0000 (08:57 +1000)
commita67b8887ced9d54cab7759bdb19deafed37481eb
tree87ad4a1f9f2b5fd48d820949c827fea7264fa885
parent3a8ab79eae4500e6ac618a92a90cee63d6e804a8
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>
drivers/gpu/vga/vga_switcheroo.c