The asus-nb-wmi driver is matched by WMI alias but fails to load on TUF Gaming series laptops producing multiple ACPI errors in the kernel log. The input buffer for WMI method invocation size is 2 dwords, whereas 3 are expected by this model. FX505GM: .. Method (WMNB, 3, Serialized) { P8XH (Zero, 0x11) CreateDWordField (Arg2, Zero, IIA0) CreateDWordField (Arg2, 0x04, IIA1) CreateDWordField (Arg2, 0x08, IIA2) Local0 = (Arg1 & 0xFFFFFFFF) ... Compare with older K54C: ... Method (WMNB, 3, NotSerialized) { CreateDWordField (Arg2, 0x00, IIA0) CreateDWordField (Arg2, 0x04, IIA1) Local0 = (Arg1 & 0xFFFFFFFF) ... Increase buffer size to 3 dwords. No negative consequences of this change are expected, as the input buffer size is not verified. The original function is replaced by a wrapper for a new method passing value 0 for the last parameter. The new function will be used to control RGB keyboard backlight.
Unified · Split
| @@ -98,6 +98,7 @@ static bool ashs_present(void) · 97 unmodified lines | ||
| 98 | 98 | struct bios_args { |
| 99 | 99 | u32 arg0; |
| 100 | 100 | u32 arg1; |
| 101 | + u32 arg2; /* At least TUF Gaming series uses 3 dword input buffer. */ | |
| 101 | 102 | } __packed; |
| 102 | 103 | |
| 103 | 104 | /* |
| @@ -224,11 +225,13 @@ static void asus_wmi_input_exit(struct asus_wmi *asus) · 120 unmodified lines | ||
| 224 | 225 | asus->inputdev = NULL; |
| 225 | 226 | } |
| 226 | 227 | |
| 227 | −int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retval) | |
| 228 | +static int asus_wmi_evaluate_method3(u32 method_id, | |
| 229 | + u32 arg0, u32 arg1, u32 arg2, u32 *retval) | |
| 228 | 230 | { |
| 229 | 231 | struct bios_args args = { |
| 230 | 232 | .arg0 = arg0, |
| 231 | 233 | .arg1 = arg1, |
| 234 | + .arg2 = arg2, | |
| 232 | 235 | }; |
| 233 | 236 | struct acpi_buffer input = { (acpi_size) sizeof(args), &args }; |
| 234 | 237 | struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; |
| @@ -260,6 +263,11 @@ exit: · 25 unmodified lines | ||
| 260 | 263 | |
| 261 | 264 | return 0; |
| 262 | 265 | } |
| 266 | + | |
| 267 | +int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1, u32 *retval) | |
| 268 | +{ | |
| 269 | + return asus_wmi_evaluate_method3(method_id, arg0, arg1, 0, retval); | |
| 270 | +} | |
| 263 | 271 | EXPORT_SYMBOL_GPL(asus_wmi_evaluate_method); |
| 264 | 272 | |
| 265 | 273 | static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args) |