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HID: wiimote: lock DRM mode during debugfs overwrite

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If we write a DRM mode via debugfs, we shouldn't allow normal operations
to overwrite this DRM mode. This is important if we want to debug
3rd-party devices and we want to see what data is sent on each mode.

If we write NULL/0 as DRM, the lock is removed again so the best matching
DRM is chosen by wiimote core.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
David Herrmann
2013-05-05 23:13:03 +02:00
committed by Jiri Kosina
parent 51103c70bf
commit d76f89e13a
3 changed files with 7 additions and 1 deletions
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drivers/hid/hid-wiimote.h
+1
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@@ -43,6 +43,7 @@
#define WIIPROTO_FLAG_MP_USED 0x1000
#define WIIPROTO_FLAG_MP_ACTIVE 0x2000
#define WIIPROTO_FLAG_EXITING 0x4000
#define WIIPROTO_FLAG_DRM_LOCKED 0x8000
#define WIIPROTO_FLAGS_LEDS (WIIPROTO_FLAG_LED1 | WIIPROTO_FLAG_LED2 | \
WIIPROTO_FLAG_LED3 | WIIPROTO_FLAG_LED4)