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drm/i915: Duplicate opregion vbt memory

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In the case of vbt residing in opregion, we simply remap the region
into the kernel and pass the memory reference. Instead duplicate the
memory to handle a saner cleanup in intel_bios_init.

Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240228213235.2495611-6-radhakrishna.sripada@intel.com
This commit is contained in:
Radhakrishna Sripada 2024-02-28 13:32:34 -08:00 committed by Jani Nikula
parent 9d9bb71f3e
commit 0cb9b4ead0
2 changed files with 5 additions and 3 deletions
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6
drivers/gpu/drm/i915/display/intel_bios.c
View File

@ -3194,8 +3194,10 @@ void intel_bios_init(struct drm_i915_private *i915)
oprom_vbt = firmware_get_vbt(i915, NULL);
vbt = oprom_vbt;
if (!vbt)
vbt = intel_opregion_get_vbt(i915, NULL);
if (!vbt) {
oprom_vbt = intel_opregion_get_vbt(i915, NULL);
vbt = oprom_vbt;
}
/*
* If the OpRegion does not have VBT, look in SPI flash through MMIO or

2
drivers/gpu/drm/i915/display/intel_opregion.c
View File

@ -1151,7 +1151,7 @@ const void *intel_opregion_get_vbt(struct drm_i915_private *i915, size_t *size)
if (size)
*size = opregion->vbt_size;
return opregion->vbt;
return kmemdup(opregion->vbt, opregion->vbt_size, GFP_KERNEL);
}
bool intel_opregion_headless_sku(struct drm_i915_private *i915)