diff options
Diffstat (limited to 'drivers/platform/x86/thinkpad_acpi.c')
| -rw-r--r-- | drivers/platform/x86/thinkpad_acpi.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index be67e5e28d18..03ca6c139f1a 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -369,7 +369,7 @@ struct tpacpi_led_classdev { struct led_classdev led_classdev; struct work_struct work; enum led_status_t new_state; - unsigned int led; + int led; }; /* brightness level capabilities */ @@ -5296,6 +5296,16 @@ static int __init led_init(struct ibm_init_struct *iibm) led_supported = led_init_detect_mode(); + if (led_supported != TPACPI_LED_NONE) { + useful_leds = tpacpi_check_quirks(led_useful_qtable, + ARRAY_SIZE(led_useful_qtable)); + + if (!useful_leds) { + led_handle = NULL; + led_supported = TPACPI_LED_NONE; + } + } + vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", str_supported(led_supported), led_supported); @@ -5309,10 +5319,9 @@ static int __init led_init(struct ibm_init_struct *iibm) return -ENOMEM; } - useful_leds = tpacpi_check_quirks(led_useful_qtable, - ARRAY_SIZE(led_useful_qtable)); - for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { + tpacpi_leds[i].led = -1; + if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) { rc = tpacpi_init_led(i); @@ -5370,9 +5379,13 @@ static int led_write(char *buf) return -ENODEV; while ((cmd = next_cmd(&buf))) { - if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 15) + if (sscanf(cmd, "%d", &led) != 1) return -EINVAL; + if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1) || + tpacpi_leds[led].led < 0) + return -ENODEV; + if (strstr(cmd, "off")) { s = TPACPI_LED_OFF; } else if (strstr(cmd, "on")) { |