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Commit 7c3906d0 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/radeon: convert radeon vfct code to use acpi_get_table_with_size 



Allows us to verify the table size.

Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent 4f81f986

drivers/gpu/drm/radeon/radeon_bios.c

+2 −4
Original line number Diff line number Diff line
@@ -482,13 +482,12 @@ static bool radeon_acpi_vfct_bios(struct radeon_device *rdev) 
{

	bool ret = false;

	struct acpi_table_header *hdr;

	/* acpi_get_table_with_size is not exported :( */

	acpi_size tbl_size = 0x7fffffff;

	acpi_size tbl_size;

	UEFI_ACPI_VFCT *vfct;

	GOP_VBIOS_CONTENT *vbios;

	VFCT_IMAGE_HEADER *vhdr;



	if (!ACPI_SUCCESS(acpi_get_table("VFCT", 1, &hdr)))

	if (!ACPI_SUCCESS(acpi_get_table_with_size("VFCT", 1, &hdr, &tbl_size)))

		return false;

	if (tbl_size < sizeof(UEFI_ACPI_VFCT)) {

		DRM_ERROR("ACPI VFCT table present but broken (too short #1)\n");
@@ -525,7 +524,6 @@ static bool radeon_acpi_vfct_bios(struct radeon_device *rdev) 
	ret = !!rdev->bios;



out_unmap:

	/* uh, no idea what to do here... */

	return ret;

}

#else