mirror of
https://github.com/torvalds/linux.git
synced 2024-12-06 11:01:43 +00:00
d72498ca2c
The proper fix would have been to select LEDS_CLASS but this can lead
to a circular dependency, as found out by Arnd.
This patch implements Arnd's suggestion instead, at the cost of some
auto-magic for a fringe feature.
Reported-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: Intel's 0-DAY
Fixes: 8d021d71b3
("drm/nouveau/drm/nouveau: add a LED driver for the NVIDIA logo")
Signed-off-by: Martin Peres <martin.peres@free.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
/*
|
|
* Copyright 2015 Martin Peres
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
|
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
* Authors: Martin Peres <martin.peres@free.fr>
|
|
*/
|
|
|
|
#ifndef __NOUVEAU_LED_H__
|
|
#define __NOUVEAU_LED_H__
|
|
|
|
#include "nouveau_drv.h"
|
|
|
|
struct led_classdev;
|
|
|
|
struct nouveau_led {
|
|
struct drm_device *dev;
|
|
|
|
struct led_classdev led;
|
|
};
|
|
|
|
static inline struct nouveau_led *
|
|
nouveau_led(struct drm_device *dev)
|
|
{
|
|
return nouveau_drm(dev)->led;
|
|
}
|
|
|
|
/* nouveau_led.c */
|
|
#if IS_REACHABLE(CONFIG_LEDS_CLASS)
|
|
int nouveau_led_init(struct drm_device *dev);
|
|
void nouveau_led_suspend(struct drm_device *dev);
|
|
void nouveau_led_resume(struct drm_device *dev);
|
|
void nouveau_led_fini(struct drm_device *dev);
|
|
#else
|
|
static inline int nouveau_led_init(struct drm_device *dev) { return 0; };
|
|
static inline void nouveau_led_suspend(struct drm_device *dev) { };
|
|
static inline void nouveau_led_resume(struct drm_device *dev) { };
|
|
static inline void nouveau_led_fini(struct drm_device *dev) { };
|
|
#endif
|
|
|
|
#endif
|