[Nouveau] [PATCH 4/5] drm/amdgpu: Use pci_get_base_class() to reduce duplicated code

[Sui Jingfeng]

From: Sui Jingfeng <suijingf...@loongson.cn>

Should be no functional change.

Cc: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Sui Jingfeng <suijingf...@loongson.cn>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 11 ++++-------
 drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c | 20 +++++---------------
 2 files changed, 9 insertions(+), 22 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
index a5a2b06c6588..4f18af877105 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
@@ -1389,14 +1389,11 @@ void amdgpu_acpi_detect(void)
        struct pci_dev *pdev = NULL;
        int ret;
 
-       while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != 
NULL) {
-               if (!atif->handle)
-                       amdgpu_atif_pci_probe_handle(pdev);
-               if (!atcs->handle)
-                       amdgpu_atcs_pci_probe_handle(pdev);
-       }
+       while ((pdev = pci_get_base_class(PCI_BASE_CLASS_DISPLAY, pdev))) {
+               if ((pdev->class != PCI_CLASS_DISPLAY_VGA << 8) &&
+                   (pdev->class != PCI_CLASS_DISPLAY_OTHER << 8))
+                       continue;
 
-       while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_OTHER << 8, pdev)) != 
NULL) {
                if (!atif->handle)
                        amdgpu_atif_pci_probe_handle(pdev);
                if (!atcs->handle)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
index 38ccec913f00..5bbb23e102ba 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
@@ -287,7 +287,11 @@ static bool amdgpu_atrm_get_bios(struct amdgpu_device 
*adev)
        if (adev->flags & AMD_IS_APU)
                return false;
 
-       while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != 
NULL) {
+       while ((pdev = pci_get_base_class(PCI_BASE_CLASS_DISPLAY, pdev))) {
+               if ((pdev->class != PCI_CLASS_DISPLAY_VGA << 8) &&
+                   (pdev->class != PCI_CLASS_DISPLAY_OTHER << 8))
+                       continue;
+
                dhandle = ACPI_HANDLE(&pdev->dev);
                if (!dhandle)
                        continue;
@@ -299,20 +303,6 @@ static bool amdgpu_atrm_get_bios(struct amdgpu_device 
*adev)
                }
        }
 
-       if (!found) {
-               while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_OTHER << 8, 
pdev)) != NULL) {
-                       dhandle = ACPI_HANDLE(&pdev->dev);
-                       if (!dhandle)
-                               continue;
-
-                       status = acpi_get_handle(dhandle, "ATRM", &atrm_handle);
-                       if (ACPI_SUCCESS(status)) {
-                               found = true;
-                               break;
-                       }
-               }
-       }
-
        if (!found)
                return false;
        pci_dev_put(pdev);
-- 
2.34.1