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author | Micha? K?pie? <kernel@kempniu.pl> | 2016-12-23 10:00:08 +0100 |
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committer | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2016-12-28 12:38:10 +0200 |
commit | a608a9d52fa4168efd478d684039ed545a69dbcd (patch) | |
tree | 778dbb5f6f0e0851d9ae837e43d0da4b0ec0e45a /drivers/platform | |
parent | f6c5c1f96d976e1fb9d71fb824629c450ee0a122 (diff) | |
download | linux-a608a9d52fa4168efd478d684039ed545a69dbcd.tar.gz linux-a608a9d52fa4168efd478d684039ed545a69dbcd.tar.bz2 linux-a608a9d52fa4168efd478d684039ed545a69dbcd.zip |
platform/x86: fujitsu-laptop: use brightness_set_blocking for LED-setting callbacks
All LED-setting functions in fujitsu-laptop are currently assigned to
the brightness_set callback, which is incorrect because they can sleep
(due to their use of call_fext_func(), which in turn issues ACPI calls)
and the documentation (in include/linux/leds.h) clearly states they must
not. Assign them to brightness_set_blocking instead and change them to
match the expected function prototype.
This change makes it possible to use Fujitsu-specific LEDs with "heavy"
triggers, like disk-activity or phy0rx.
Fixes: 3a407086090b ("fujitsu-laptop: Add BL power, LED control and radio state information")
Fixes: 4f62568c1fcf ("fujitsu-laptop: Support radio LED")
Fixes: d6b88f64b0d4 ("fujitsu-laptop: Add support for eco LED")
Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Acked-by: Jonathan Woithe <jwoithe@just42.net>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Diffstat (limited to 'drivers/platform')
-rw-r--r-- | drivers/platform/x86/fujitsu-laptop.c | 42 |
1 files changed, 21 insertions, 21 deletions
diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c index 61f39abf5dc8..82d67715ce76 100644 --- a/drivers/platform/x86/fujitsu-laptop.c +++ b/drivers/platform/x86/fujitsu-laptop.c @@ -177,43 +177,43 @@ static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event); #if IS_ENABLED(CONFIG_LEDS_CLASS) static enum led_brightness logolamp_get(struct led_classdev *cdev); -static void logolamp_set(struct led_classdev *cdev, +static int logolamp_set(struct led_classdev *cdev, enum led_brightness brightness); static struct led_classdev logolamp_led = { .name = "fujitsu::logolamp", .brightness_get = logolamp_get, - .brightness_set = logolamp_set + .brightness_set_blocking = logolamp_set }; static enum led_brightness kblamps_get(struct led_classdev *cdev); -static void kblamps_set(struct led_classdev *cdev, +static int kblamps_set(struct led_classdev *cdev, enum led_brightness brightness); static struct led_classdev kblamps_led = { .name = "fujitsu::kblamps", .brightness_get = kblamps_get, - .brightness_set = kblamps_set + .brightness_set_blocking = kblamps_set }; static enum led_brightness radio_led_get(struct led_classdev *cdev); -static void radio_led_set(struct led_classdev *cdev, +static int radio_led_set(struct led_classdev *cdev, enum led_brightness brightness); static struct led_classdev radio_led = { .name = "fujitsu::radio_led", .brightness_get = radio_led_get, - .brightness_set = radio_led_set + .brightness_set_blocking = radio_led_set }; static enum led_brightness eco_led_get(struct led_classdev *cdev); -static void eco_led_set(struct led_classdev *cdev, +static int eco_led_set(struct led_classdev *cdev, enum led_brightness brightness); static struct led_classdev eco_led = { .name = "fujitsu::eco_led", .brightness_get = eco_led_get, - .brightness_set = eco_led_set + .brightness_set_blocking = eco_led_set }; #endif @@ -267,48 +267,48 @@ static int call_fext_func(int cmd, int arg0, int arg1, int arg2) #if IS_ENABLED(CONFIG_LEDS_CLASS) /* LED class callbacks */ -static void logolamp_set(struct led_classdev *cdev, +static int logolamp_set(struct led_classdev *cdev, enum led_brightness brightness) { if (brightness >= LED_FULL) { call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON); - call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_ON); + return call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_ON); } else if (brightness >= LED_HALF) { call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON); - call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_OFF); + return call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_OFF); } else { - call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_OFF); + return call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_OFF); } } -static void kblamps_set(struct led_classdev *cdev, +static int kblamps_set(struct led_classdev *cdev, enum led_brightness brightness) { if (brightness >= LED_FULL) - call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_ON); + return call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_ON); else - call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_OFF); + return call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_OFF); } -static void radio_led_set(struct led_classdev *cdev, +static int radio_led_set(struct led_classdev *cdev, enum led_brightness brightness) { if (brightness >= LED_FULL) - call_fext_func(FUNC_RFKILL, 0x5, RADIO_LED_ON, RADIO_LED_ON); + return call_fext_func(FUNC_RFKILL, 0x5, RADIO_LED_ON, RADIO_LED_ON); else - call_fext_func(FUNC_RFKILL, 0x5, RADIO_LED_ON, 0x0); + return call_fext_func(FUNC_RFKILL, 0x5, RADIO_LED_ON, 0x0); } -static void eco_led_set(struct led_classdev *cdev, +static int eco_led_set(struct led_classdev *cdev, enum led_brightness brightness) { int curr; curr = call_fext_func(FUNC_LEDS, 0x2, ECO_LED, 0x0); if (brightness >= LED_FULL) - call_fext_func(FUNC_LEDS, 0x1, ECO_LED, curr | ECO_LED_ON); + return call_fext_func(FUNC_LEDS, 0x1, ECO_LED, curr | ECO_LED_ON); else - call_fext_func(FUNC_LEDS, 0x1, ECO_LED, curr & ~ECO_LED_ON); + return call_fext_func(FUNC_LEDS, 0x1, ECO_LED, curr & ~ECO_LED_ON); } static enum led_brightness logolamp_get(struct led_classdev *cdev) |