Use readb() and memcpy_fromio() accessors instead.
Ported from radeon commit:
f2c9e560b406f2f6b14b345c7da33467dee9cdf2
Acked-by: Christian König <christian.koenig@xxxxxxx>
Acked-by: Jammy Zhou <Jammy.Zhou@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
index d7a3ab2..ceb444f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
@@ -75,7 +75,7 @@ static bool igp_read_bios_from_vram(struct amdgpu_device *adev)
bool amdgpu_read_bios(struct amdgpu_device *adev)
{
- uint8_t __iomem *bios;
+ uint8_t __iomem *bios, val1, val2;
size_t size;
adev->bios = NULL;
@@ -85,15 +85,19 @@ bool amdgpu_read_bios(struct amdgpu_device *adev)
return false;
}
- if (size == 0 || bios[0] != 0x55 || bios[1] != 0xaa) {
+ val1 = readb(&bios[0]);
+ val2 = readb(&bios[1]);
+
+ if (size == 0 || val1 != 0x55 || val2 != 0xaa) {
pci_unmap_rom(adev->pdev, bios);
return false;
}
- adev->bios = kmemdup(bios, size, GFP_KERNEL);
+ adev->bios = kzalloc(size, GFP_KERNEL);
if (adev->bios == NULL) {
pci_unmap_rom(adev->pdev, bios);
return false;
}
+ memcpy_fromio(adev->bios, bios, size);
pci_unmap_rom(adev->pdev, bios);
return true;
}
--
1.8.3.1
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