[AMD Official Use Only - General]
Reviewed-by: Evan Quan <evan.q...@amd.com>
> -----Original Message-----
> From: Li Zhong <floridslee...@gmail.com>
> Sent: Thursday, September 22, 2022 12:18 PM
> To: dri-devel@lists.freedesktop.org; amd-...@lists.freedesktop.org
> Cc: jiapeng.ch...@linux.alibaba.com; Powell, Darren
> <darren.pow...@amd.com>; Chen, Guchun <guchun.c...@amd.com>;
> Limonciello, Mario <mario.limoncie...@amd.com>; Quan, Evan
> <evan.q...@amd.com>; Lazar, Lijo <lijo.la...@amd.com>; dan...@ffwll.ch;
> airl...@linux.ie; Pan, Xinhui <xinhui....@amd.com>; Koenig, Christian
> <christian.koe...@amd.com>; Deucher, Alexander
> <alexander.deuc...@amd.com>; Li Zhong <floridslee...@gmail.com>
> Subject: [PATCH v2] drivers/amd/pm: check the return value of
> amdgpu_bo_kmap
>
> amdgpu_bo_kmap() returns error when fails to map buffer object. Add the
> error check and propagate the error.
>
> Signed-off-by: Li Zhong <floridslee...@gmail.com>
> ---
> drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
> b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
> index 1eb4e613b27a..ec055858eb95 100644
> --- a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
> +++ b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
> @@ -1485,6 +1485,7 @@ static int pp_get_prv_buffer_details(void *handle,
> void **addr, size_t *size)
> {
> struct pp_hwmgr *hwmgr = handle;
> struct amdgpu_device *adev = hwmgr->adev;
> + int err;
>
> if (!addr || !size)
> return -EINVAL;
> @@ -1492,7 +1493,9 @@ static int pp_get_prv_buffer_details(void *handle,
> void **addr, size_t *size)
> *addr = NULL;
> *size = 0;
> if (adev->pm.smu_prv_buffer) {
> - amdgpu_bo_kmap(adev->pm.smu_prv_buffer, addr);
> + err = amdgpu_bo_kmap(adev->pm.smu_prv_buffer, addr);
> + if (err)
> + return err;
> *size = adev->pm.smu_prv_buffer_size;
> }
>
> --
> 2.25.1
