Commit f78313fa authored by Lijo Lazar's avatar Lijo Lazar Committed by Alex Deucher
Browse files

drm/amdgpu: Check if FB BAR is enabled for ROM read 



Some configurations don't have FB BAR enabled. Avoid reading ROM image
from FB BAR region in such cases.

Signed-off-by: default avatarLijo Lazar <lijo.lazar@amd.com>
Reviewed-by: default avatarHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent a364782f

drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c

+4 −0
Original line number Diff line number Diff line
@@ -97,6 +97,10 @@ static bool igp_read_bios_from_vram(struct amdgpu_device *adev) 
		if (amdgpu_device_need_post(adev))

			return false;



	/* FB BAR not enabled */

	if (pci_resource_len(adev->pdev, 0) == 0)

		return false;



	adev->bios = NULL;

	vram_base = pci_resource_start(adev->pdev, 0);

	bios = ioremap_wc(vram_base, size);