diff options
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/hp-wmi.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c index e4a53c3d7028..0d8cb22e30df 100644 --- a/drivers/platform/x86/hp-wmi.c +++ b/drivers/platform/x86/hp-wmi.c @@ -38,6 +38,7 @@ MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4"); #define HPWMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C" #define HPWMI_BIOS_GUID "5FB7F034-2C63-45e9-BE91-3D44E2C707E4" #define HP_OMEN_EC_THERMAL_PROFILE_OFFSET 0x95 +#define zero_if_sup(tmp) (zero_insize_support?0:sizeof(tmp)) // use when zero insize is required /* DMI board names of devices that should use the omen specific path for * thermal profiles. @@ -220,6 +221,7 @@ static struct input_dev *hp_wmi_input_dev; static struct platform_device *hp_wmi_platform_dev; static struct platform_profile_handler platform_profile_handler; static bool platform_profile_support; +static bool zero_insize_support; static struct rfkill *wifi_rfkill; static struct rfkill *bluetooth_rfkill; @@ -376,7 +378,7 @@ static int hp_wmi_read_int(int query) int val = 0, ret; ret = hp_wmi_perform_query(query, HPWMI_READ, &val, - 0, sizeof(val)); + zero_if_sup(val), sizeof(val)); if (ret) return ret < 0 ? ret : -EINVAL; @@ -412,7 +414,8 @@ static int hp_wmi_get_tablet_mode(void) return -ENODEV; ret = hp_wmi_perform_query(HPWMI_SYSTEM_DEVICE_MODE, HPWMI_READ, - system_device_mode, 0, sizeof(system_device_mode)); + system_device_mode, zero_if_sup(system_device_mode), + sizeof(system_device_mode)); if (ret < 0) return ret; @@ -499,7 +502,7 @@ static int hp_wmi_fan_speed_max_get(void) int val = 0, ret; ret = hp_wmi_perform_query(HPWMI_FAN_SPEED_MAX_GET_QUERY, HPWMI_GM, - &val, 0, sizeof(val)); + &val, zero_if_sup(val), sizeof(val)); if (ret) return ret < 0 ? ret : -EINVAL; @@ -511,7 +514,7 @@ static int __init hp_wmi_bios_2008_later(void) { int state = 0; int ret = hp_wmi_perform_query(HPWMI_FEATURE_QUERY, HPWMI_READ, &state, - 0, sizeof(state)); + zero_if_sup(state), sizeof(state)); if (!ret) return 1; @@ -522,7 +525,7 @@ static int __init hp_wmi_bios_2009_later(void) { u8 state[128]; int ret = hp_wmi_perform_query(HPWMI_FEATURE2_QUERY, HPWMI_READ, &state, - 0, sizeof(state)); + zero_if_sup(state), sizeof(state)); if (!ret) return 1; @@ -600,7 +603,7 @@ static int hp_wmi_rfkill2_refresh(void) int err, i; err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, HPWMI_READ, &state, - 0, sizeof(state)); + zero_if_sup(state), sizeof(state)); if (err) return err; @@ -1009,7 +1012,7 @@ static int __init hp_wmi_rfkill2_setup(struct platform_device *device) int err, i; err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, HPWMI_READ, &state, - 0, sizeof(state)); + zero_if_sup(state), sizeof(state)); if (err) return err < 0 ? err : -EINVAL; @@ -1485,11 +1488,15 @@ static int __init hp_wmi_init(void) { int event_capable = wmi_has_guid(HPWMI_EVENT_GUID); int bios_capable = wmi_has_guid(HPWMI_BIOS_GUID); - int err; + int err, tmp = 0; if (!bios_capable && !event_capable) return -ENODEV; + if (hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, HPWMI_READ, &tmp, + sizeof(tmp), sizeof(tmp)) == HPWMI_RET_INVALID_PARAMETERS) + zero_insize_support = true; + if (event_capable) { err = hp_wmi_input_setup(); if (err) |