diff options
| author | Michał Kępień <kernel@kempniu.pl> | 2017-06-16 07:40:56 +0300 |
|---|---|---|
| committer | Darren Hart (VMware) <dvhart@infradead.org> | 2017-07-01 06:13:05 +0300 |
| commit | 1c1946269f6a7b3c96a7164f0c9b48854ac8a6e2 (patch) | |
| tree | d021c1dac7f260e08881b484414d90c5e7d245c5 /drivers/platform/x86/fujitsu-laptop.c | |
| parent | c1f51f1c4906f2551e21451228dcbb3b9dfc7008 (diff) | |
| download | linux-1c1946269f6a7b3c96a7164f0c9b48854ac8a6e2.tar.xz | |
platform/x86: fujitsu-laptop: do not update ACPI device power status
Calling acpi_bus_update_power() for ACPI devices FUJ02B1 and FUJ02E3 is
pointless as they are not power manageable (neither _PS0 nor _PR0 is
defined for any of them), which causes their power state to be inherited
from their parent devices. Given the ACPI paths of these two devices
(\_SB.PCI0.LPCB.FJEX, \_SB.FEXT), their parent devices are also not
power manageable. These parent devices will thus have their power state
initialized to ACPI_STATE_D0, which in turn causes the power state for
both FUJ02B1 and FUJ02E3 to always be ACPI_STATE_D0 ("on").
Remove relevant acpi_bus_update_power() calls along with parts of debug
messages that they were supposed to have an effect on.
Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Reviewed-by: Jonathan Woithe <jwoithe@just42.net>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Diffstat (limited to 'drivers/platform/x86/fujitsu-laptop.c')
| -rw-r--r-- | drivers/platform/x86/fujitsu-laptop.c | 24 |
1 files changed, 4 insertions, 20 deletions
diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c index c01b8ed99478..1ab7a115094b 100644 --- a/drivers/platform/x86/fujitsu-laptop.c +++ b/drivers/platform/x86/fujitsu-laptop.c @@ -402,7 +402,6 @@ static int fujitsu_backlight_register(struct acpi_device *device) static int acpi_fujitsu_bl_add(struct acpi_device *device) { struct fujitsu_bl *priv; - int state = 0; int error; if (acpi_video_get_backlight_type() != acpi_backlight_vendor) @@ -421,15 +420,8 @@ static int acpi_fujitsu_bl_add(struct acpi_device *device) if (error) return error; - error = acpi_bus_update_power(device->handle, &state); - if (error) { - pr_err("Error reading power state\n"); - return error; - } - - pr_info("ACPI: %s [%s] (%s)\n", - acpi_device_name(device), acpi_device_bid(device), - !device->power.state ? "on" : "off"); + pr_info("ACPI: %s [%s]\n", + acpi_device_name(device), acpi_device_bid(device)); if (acpi_has_method(device->handle, METHOD_NAME__INI)) { vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n"); @@ -790,7 +782,6 @@ static int acpi_fujitsu_laptop_leds_register(struct acpi_device *device) static int acpi_fujitsu_laptop_add(struct acpi_device *device) { struct fujitsu_laptop *priv; - int state = 0; int error; int i; @@ -818,15 +809,8 @@ static int acpi_fujitsu_laptop_add(struct acpi_device *device) if (error) goto err_free_fifo; - error = acpi_bus_update_power(device->handle, &state); - if (error) { - pr_err("Error reading power state\n"); - goto err_free_fifo; - } - - pr_info("ACPI: %s [%s] (%s)\n", - acpi_device_name(device), acpi_device_bid(device), - !device->power.state ? "on" : "off"); + pr_info("ACPI: %s [%s]\n", + acpi_device_name(device), acpi_device_bid(device)); if (acpi_has_method(device->handle, METHOD_NAME__INI)) { vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n"); |