[PATCH v2 1/4] drm/amdgpu: Add wrapper for freeing vbios memory

[Lijo Lazar]

Use bios_release wrapper to release memory allocated for vbios image and
reset the variables.

v2:
        Use the same wrapper for clean up in sw_fini (Alex Deucher)

Signed-off-by: Lijo Lazar <lijo.la...@amd.com>
Reviewed-by: Alex Deucher <alexander.deuc...@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h        |  1 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c   | 20 ++++++++++++++------
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c |  3 +--
 3 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h 
b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index af7f1c2cfcdf..df3903fcfc87 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -417,6 +417,7 @@ bool amdgpu_get_bios(struct amdgpu_device *adev);
 bool amdgpu_read_bios(struct amdgpu_device *adev);
 bool amdgpu_soc15_read_bios_from_rom(struct amdgpu_device *adev,
                                     u8 *bios, u32 length_bytes);
+void amdgpu_bios_release(struct amdgpu_device *adev);
 /*
  * Clocks
  */
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
index 423fd2eebe1e..75fcc521c171 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
@@ -84,6 +84,13 @@ static bool check_atom_bios(struct amdgpu_device *adev, 
size_t size)
        return false;
 }
 
+void amdgpu_bios_release(struct amdgpu_device *adev)
+{
+       kfree(adev->bios);
+       adev->bios = NULL;
+       adev->bios_size = 0;
+}
+
 /* If you boot an IGP board with a discrete card as the primary,
  * the IGP rom is not accessible via the rom bar as the IGP rom is
  * part of the system bios.  On boot, the system bios puts a
@@ -121,7 +128,7 @@ static bool amdgpu_read_bios_from_vram(struct amdgpu_device 
*adev)
        iounmap(bios);
 
        if (!check_atom_bios(adev, size)) {
-               kfree(adev->bios);
+               amdgpu_bios_release(adev);
                return false;
        }
 
@@ -149,7 +156,7 @@ bool amdgpu_read_bios(struct amdgpu_device *adev)
        pci_unmap_rom(adev->pdev, bios);
 
        if (!check_atom_bios(adev, size)) {
-               kfree(adev->bios);
+               amdgpu_bios_release(adev);
                return false;
        }
 
@@ -189,7 +196,7 @@ static bool amdgpu_read_bios_from_rom(struct amdgpu_device 
*adev)
        amdgpu_asic_read_bios_from_rom(adev, adev->bios, len);
 
        if (!check_atom_bios(adev, len)) {
-               kfree(adev->bios);
+               amdgpu_bios_release(adev);
                return false;
        }
 
@@ -225,7 +232,8 @@ static bool amdgpu_read_platform_bios(struct amdgpu_device 
*adev)
 
        return true;
 free_bios:
-       kfree(adev->bios);
+       amdgpu_bios_release(adev);
+
        return false;
 }
 
@@ -327,7 +335,7 @@ static bool amdgpu_atrm_get_bios(struct amdgpu_device *adev)
        }
 
        if (!check_atom_bios(adev, size)) {
-               kfree(adev->bios);
+               amdgpu_bios_release(adev);
                return false;
        }
        adev->bios_size = size;
@@ -392,7 +400,7 @@ static bool amdgpu_acpi_vfct_bios(struct amdgpu_device 
*adev)
                                             GFP_KERNEL);
 
                        if (!check_atom_bios(adev, vhdr->ImageLength)) {
-                               kfree(adev->bios);
+                               amdgpu_bios_release(adev);
                                return false;
                        }
                        adev->bios_size = vhdr->ImageLength;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index ae83e23872fa..38679e3d5209 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -4741,8 +4741,7 @@ void amdgpu_device_fini_sw(struct amdgpu_device *adev)
        if (amdgpu_emu_mode != 1)
                amdgpu_atombios_fini(adev);
 
-       kfree(adev->bios);
-       adev->bios = NULL;
+       amdgpu_bios_release(adev);
 
        kfree(adev->fru_info);
        adev->fru_info = NULL;
-- 
2.25.1