[SRU][K][PATCH 1/1] drm/amd: Delay removal of the firmware framebuffer

[Kleber Sacilotto de Souza]

From: Mario Limonciello <mario.limonciello at amd.com>

BugLink: https://bugs.launchpad.net/bugs/2003524

Removing the firmware framebuffer from the driver means that even
if the driver doesn't support the IP blocks in a GPU it will no
longer be functional after the driver fails to initialize.

This change will ensure that unsupported IP blocks at least cause
the driver to work with the EFI framebuffer.

Cc: stable at vger.kernel.org
Suggested-by: Alex Deucher <alexander.deucher at amd.com>
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar at amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
(backported from commit 1923bc5a56daeeabd7e9093bad2febcd6af2416a)
[ kleber: context adjustments ]
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza at canonical.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 8 ++++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c    | 6 ------
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 72158f3939e3..52c574cc035b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -33,6 +33,7 @@
 #include <linux/iommu.h>
 #include <linux/pci.h>
 
+#include <drm/drm_aperture.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/amdgpu_drm.h>
@@ -86,6 +87,8 @@ MODULE_FIRMWARE("amdgpu/navi12_gpu_info.bin");
 #define AMDGPU_MAX_RETRY_LIMIT		2
 #define AMDGPU_RETRY_SRIOV_RESET(r) ((r) == -EBUSY || (r) == -ETIMEDOUT || (r) == -EINVAL)
 
+static const struct drm_driver amdgpu_kms_driver;
+
 const char *amdgpu_asic_name[] = {
 	"TAHITI",
 	"PITCAIRN",
@@ -3726,6 +3729,11 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 	if (r)
 		return r;
 
+	/* Get rid of things like offb */
+	r = drm_aperture_remove_conflicting_pci_framebuffers(adev->pdev, &amdgpu_kms_driver);
+	if (r)
+		return r;
+
 	/* Enable TMZ based on IP_VERSION */
 	amdgpu_gmc_tmz_set(adev);
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 5e8ca32bc3a9..2996ec8feab5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -23,7 +23,6 @@
  */
 
 #include <drm/amdgpu_drm.h>
-#include <drm/drm_aperture.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_gem.h>
 #include <drm/drm_vblank.h>
@@ -2057,11 +2056,6 @@ static int amdgpu_pci_probe(struct pci_dev *pdev,
 	}
 #endif
 
-	/* Get rid of things like offb */
-	ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &amdgpu_kms_driver);
-	if (ret)
-		return ret;
-
 	adev = devm_drm_dev_alloc(&pdev->dev, &amdgpu_kms_driver, typeof(*adev), ddev);
 	if (IS_ERR(adev))
 		return PTR_ERR(adev);
-- 
2.37.2