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drm/i915: Free the returned object of acpi_evaluate_dsm()
As per the comment on top of acpi_evaluate_dsm(): | * Evaluate device's _DSM method with specified GUID, revision id and | * function number. Caller needs to free the returned object. We should free the returned object of acpi_evaluate_dsm() to avoid memory leakage. Otherwise the kmemleak splat will be triggered at boot time (if we compile kernel with CONFIG_DEBUG_TEST_DRIVER_REMOVE=y). Fixes:8e55f99c51
("drm/i915: Invoke another _DSM to enable MUX on HP Workstation laptops") Cc: Kai-Heng Feng <kai.heng.feng@canonical.com> Signed-off-by: Zenghui Yu <yuzenghui@huawei.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210906033541.862-1-yuzenghui@huawei.com (cherry picked from commit149ac2e7ae
) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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1 changed files with 5 additions and 2 deletions
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@ -186,13 +186,16 @@ void intel_dsm_get_bios_data_funcs_supported(struct drm_i915_private *i915)
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{
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struct pci_dev *pdev = to_pci_dev(i915->drm.dev);
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acpi_handle dhandle;
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union acpi_object *obj;
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dhandle = ACPI_HANDLE(&pdev->dev);
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if (!dhandle)
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return;
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acpi_evaluate_dsm(dhandle, &intel_dsm_guid2, INTEL_DSM_REVISION_ID,
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INTEL_DSM_FN_GET_BIOS_DATA_FUNCS_SUPPORTED, NULL);
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obj = acpi_evaluate_dsm(dhandle, &intel_dsm_guid2, INTEL_DSM_REVISION_ID,
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INTEL_DSM_FN_GET_BIOS_DATA_FUNCS_SUPPORTED, NULL);
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if (obj)
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ACPI_FREE(obj);
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}
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/*
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