Since commit 29a241c (ACPICA: Add argument typechecking for all
predefined ACPI names), _DSM parameters are validated which trigger the
following warning:
ACPI Warning: \_SB_.PCI0.GFX0._DSM: Argument #4 type mismatch - Found
[Integer], ACPI requires [Package] (20130517/nsarguments-95)
ACPI Warning: \_SB_.PCI0.GFX0._DSM: Argument #4 type mismatch - Found
[Integer], ACPI requires [Package] (20130517/nsarguments-95)
ACPI Warning: \_SB_.PCI0.P0P2.PEGP._DSM: Argument #4 type mismatch - Found
[Integer], ACPI requires [Package] (20130517/nsarguments-95)
ACPI Warning: \_SB_.PCI0.P0P2.PEGP._DSM: Argument #4 type mismatch - Found
[Integer], ACPI requires [Package] (20130517/nsarguments-95)
As the Intel _DSM method seems to ignore this parameter, let's comply to
the ACPI spec and use a Package instead.
Signed-off-by: Peter Wu <lekenst...@gmail.com>
---
What is this code useful for? It seems unfinished, all it does it
printing some information when a mux is available, but besides that
there is no interaction with the driver.
---
drivers/gpu/drm/i915/intel_acpi.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_acpi.c
b/drivers/gpu/drm/i915/intel_acpi.c
index bcbbaea..57fe1ae 100644
--- a/drivers/gpu/drm/i915/intel_acpi.c
+++ b/drivers/gpu/drm/i915/intel_acpi.c
@@ -28,7 +28,7 @@ static const u8 intel_dsm_guid[] = {
0x0f, 0x13, 0x17, 0xb0, 0x1c, 0x2c
};
-static int intel_dsm(acpi_handle handle, int func, int arg)
+static int intel_dsm(acpi_handle handle, int func)
{
struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
struct acpi_object_list input;
@@ -46,8 +46,9 @@ static int intel_dsm(acpi_handle handle, int func, int arg)
params[1].integer.value = INTEL_DSM_REVISION_ID;
params[2].type = ACPI_TYPE_INTEGER;
params[2].integer.value = func;
- params[3].type = ACPI_TYPE_INTEGER;
- params[3].integer.value = arg;
+ params[3].type = ACPI_TYPE_PACKAGE;
+ params[3].package.count = 0;
+ params[3].package.elements = NULL;
ret = acpi_evaluate_object(handle, "_DSM", &input, &output);
if (ret) {
@@ -151,8 +152,9 @@ static void intel_dsm_platform_mux_info(void)
params[1].integer.value = INTEL_DSM_REVISION_ID;
params[2].type = ACPI_TYPE_INTEGER;
params[2].integer.value = INTEL_DSM_FN_PLATFORM_MUX_INFO;
- params[3].type = ACPI_TYPE_INTEGER;
- params[3].integer.value = 0;
+ params[3].type = ACPI_TYPE_PACKAGE;
+ params[3].package.count = 0;
+ params[3].package.elements = NULL;
ret = acpi_evaluate_object(intel_dsm_priv.dhandle, "_DSM", &input,
&output);
@@ -205,7 +207,7 @@ static bool intel_dsm_pci_probe(struct pci_dev *pdev)
return false;
}
- ret = intel_dsm(dhandle, INTEL_DSM_FN_SUPPORTED_FUNCTIONS, 0);
+ ret = intel_dsm(dhandle, INTEL_DSM_FN_SUPPORTED_FUNCTIONS);
if (ret < 0) {
DRM_DEBUG_KMS("failed to get supported _DSM functions\n");
return false;
--
1.8.3.4
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