diff options
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/toshiba_acpi.c | 21 |
1 files changed, 4 insertions, 17 deletions
diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c index 96076d99cf33..06362b7d3ad7 100644 --- a/drivers/platform/x86/toshiba_acpi.c +++ b/drivers/platform/x86/toshiba_acpi.c @@ -928,9 +928,7 @@ static int lcd_proc_open(struct inode *inode, struct file *file) static int set_lcd_brightness(struct toshiba_acpi_dev *dev, int value) { - u32 in[TCI_WORDS] = { HCI_SET, HCI_LCD_BRIGHTNESS, 0, 0, 0, 0 }; - u32 out[TCI_WORDS]; - acpi_status status; + u32 hci_result; if (dev->tr_backlight_supported) { bool enable = !value; @@ -941,20 +939,9 @@ static int set_lcd_brightness(struct toshiba_acpi_dev *dev, int value) value--; } - in[2] = value << HCI_LCD_BRIGHTNESS_SHIFT; - status = tci_raw(dev, in, out); - if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) { - pr_err("ACPI call to set brightness failed"); - return -EIO; - } - /* Extra check for "incomplete" backlight method, where the AML code - * doesn't check for HCI_SET or HCI_GET and returns TOS_SUCCESS, - * the actual brightness, and in some cases the max brightness. - */ - if (out[2] > 0 || out[3] == 0xE000) - return -ENODEV; - - return out[0] == TOS_SUCCESS ? 0 : -EIO; + value = value << HCI_LCD_BRIGHTNESS_SHIFT; + hci_result = hci_write1(dev, HCI_LCD_BRIGHTNESS, value); + return hci_result == TOS_SUCCESS ? 0 : -EIO; } static int set_lcd_status(struct backlight_device *bd) |