drm/amdgpu: Use dbg level for VBIOS check messages

Driver has different ways to fetch VBIOS. If one of the methods doesn't
find an authentic one, it will show misleading info messages eventhough
a subsequent method finds a valid VBIOS. Keep the message level at debug
and add device context.

Signed-off-by: Lijo Lazar <[e-mail]>
Reviewed-by: Alex Deucher <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

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

···
 /* Check if current bios is an ATOM BIOS.
  * Return true if it is ATOM BIOS. Otherwise, return false.
  */
-static bool check_atom_bios(uint8_t *bios, size_t size)
+static bool check_atom_bios(struct amdgpu_device *adev, size_t size)
 {
 	uint16_t tmp, bios_header_start;
+	uint8_t *bios = adev->bios;
 
 	if (!bios || size < 0x49) {
-		DRM_INFO("vbios mem is null or mem size is wrong\n");
+		dev_dbg(adev->dev, "VBIOS mem is null or mem size is wrong\n");
 		return false;
 	}
 
 	if (!AMD_IS_VALID_VBIOS(bios)) {
-		DRM_INFO("BIOS signature incorrect %x %x\n", bios[0], bios[1]);
+		dev_dbg(adev->dev, "VBIOS signature incorrect %x %x\n", bios[0],
+			bios[1]);
 		return false;
 	}
 
 	bios_header_start = bios[0x48] | (bios[0x49] << 8);
 	if (!bios_header_start) {
-		DRM_INFO("Can't locate bios header\n");
+		dev_dbg(adev->dev, "Can't locate VBIOS header\n");
 		return false;
 	}
 
 	tmp = bios_header_start + 4;
 	if (size < tmp) {
-		DRM_INFO("BIOS header is broken\n");
+		dev_dbg(adev->dev, "VBIOS header is broken\n");
 		return false;
 	}
 
 	if (!memcmp(bios + tmp, "ATOM", 4) ||
 	    !memcmp(bios + tmp, "MOTA", 4)) {
-		DRM_DEBUG("ATOMBIOS detected\n");
+		dev_dbg(adev->dev, "ATOMBIOS detected\n");
 		return true;
 	}
 
···
 	memcpy_fromio(adev->bios, bios, size);
 	iounmap(bios);
 
-	if (!check_atom_bios(adev->bios, size)) {
+	if (!check_atom_bios(adev, size)) {
 		kfree(adev->bios);
 		return false;
 	}
···
 	memcpy_fromio(adev->bios, bios, size);
 	pci_unmap_rom(adev->pdev, bios);
 
-	if (!check_atom_bios(adev->bios, size)) {
+	if (!check_atom_bios(adev, size)) {
 		kfree(adev->bios);
 		return false;
 	}
···
 	/* read complete BIOS */
 	amdgpu_asic_read_bios_from_rom(adev, adev->bios, len);
 
-	if (!check_atom_bios(adev->bios, len)) {
+	if (!check_atom_bios(adev, len)) {
 		kfree(adev->bios);
 		return false;
 	}
···
 	memcpy_fromio(adev->bios, bios, romlen);
 	iounmap(bios);
 
-	if (!check_atom_bios(adev->bios, romlen))
+	if (!check_atom_bios(adev, romlen))
 		goto free_bios;
 
 	adev->bios_size = romlen;
···
 			break;
 	}
 
-	if (!check_atom_bios(adev->bios, size)) {
+	if (!check_atom_bios(adev, size)) {
 		kfree(adev->bios);
 		return false;
 	}
···
 					     vhdr->ImageLength,
 					     GFP_KERNEL);
 
-			if (!check_atom_bios(adev->bios, vhdr->ImageLength)) {
+			if (!check_atom_bios(adev, vhdr->ImageLength)) {
 				kfree(adev->bios);
 				return false;
 			}