diff options
| author | Maxime Ripard <[email protected]> | 2021-04-26 12:03:09 +0000 |
|---|---|---|
| committer | Maxime Ripard <[email protected]> | 2021-04-26 12:03:09 +0000 |
| commit | 355b60296143a090039211c5f0e1463f84aab65a (patch) | |
| tree | b74d4ef2aea66252ea9cf77c847de6c6e72a02b7 /drivers/gpu/drm/i915/display/intel_acpi.c | |
| parent | drm: Remove DRM_KMS_FB_HELPER Kconfig option (diff) | |
| parent | Merge tag 'drm-misc-next-fixes-2021-04-22' of git://anongit.freedesktop.org/d... (diff) | |
| download | kernel-355b60296143a090039211c5f0e1463f84aab65a.tar.gz kernel-355b60296143a090039211c5f0e1463f84aab65a.zip | |
Merge drm/drm-next into drm-misc-next
Christian needs some patches from drm/next
Signed-off-by: Maxime Ripard <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_acpi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_acpi.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_acpi.c b/drivers/gpu/drm/i915/display/intel_acpi.c index e21fb14d5e07..833d0c1be4f1 100644 --- a/drivers/gpu/drm/i915/display/intel_acpi.c +++ b/drivers/gpu/drm/i915/display/intel_acpi.c @@ -84,13 +84,31 @@ static void intel_dsm_platform_mux_info(acpi_handle dhandle) return; } + if (!pkg->package.count) { + DRM_DEBUG_DRIVER("no connection in _DSM\n"); + return; + } + connector_count = &pkg->package.elements[0]; DRM_DEBUG_DRIVER("MUX info connectors: %lld\n", (unsigned long long)connector_count->integer.value); for (i = 1; i < pkg->package.count; i++) { union acpi_object *obj = &pkg->package.elements[i]; - union acpi_object *connector_id = &obj->package.elements[0]; - union acpi_object *info = &obj->package.elements[1]; + union acpi_object *connector_id; + union acpi_object *info; + + if (obj->type != ACPI_TYPE_PACKAGE || obj->package.count < 2) { + DRM_DEBUG_DRIVER("Invalid object for MUX #%d\n", i); + continue; + } + + connector_id = &obj->package.elements[0]; + info = &obj->package.elements[1]; + if (info->type != ACPI_TYPE_BUFFER || info->buffer.length < 4) { + DRM_DEBUG_DRIVER("Invalid info for MUX obj #%d\n", i); + continue; + } + DRM_DEBUG_DRIVER("Connector id: 0x%016llx\n", (unsigned long long)connector_id->integer.value); DRM_DEBUG_DRIVER(" port id: %s\n", |