From: Lijo Lazar Date: Wed, 29 Nov 2023 07:07:34 +0000 (+0530) Subject: drm/amdgpu: Add NULL checks for function pointers X-Git-Tag: v6.6.14~673 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fb26de4a86e19711880e7e845505505f01d2eb82;p=platform%2Fkernel%2Flinux-starfive.git drm/amdgpu: Add NULL checks for function pointers [ Upstream commit 81577503efb49f4ad76af22f9941d72900ef4aab ] Check if function is implemented before making the call. Signed-off-by: Lijo Lazar Reviewed-by: Hawking Zhang Acked-by: Alex Deucher Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c index 9abfe4c..3667f9a 100644 --- a/drivers/gpu/drm/amd/amdgpu/soc15.c +++ b/drivers/gpu/drm/amd/amdgpu/soc15.c @@ -1422,9 +1422,11 @@ static void soc15_common_get_clockgating_state(void *handle, u64 *flags) if (amdgpu_sriov_vf(adev)) *flags = 0; - adev->nbio.funcs->get_clockgating_state(adev, flags); + if (adev->nbio.funcs && adev->nbio.funcs->get_clockgating_state) + adev->nbio.funcs->get_clockgating_state(adev, flags); - adev->hdp.funcs->get_clock_gating_state(adev, flags); + if (adev->hdp.funcs && adev->hdp.funcs->get_clock_gating_state) + adev->hdp.funcs->get_clock_gating_state(adev, flags); if (adev->ip_versions[MP0_HWIP][0] != IP_VERSION(13, 0, 2)) { @@ -1440,9 +1442,11 @@ static void soc15_common_get_clockgating_state(void *handle, u64 *flags) } /* AMD_CG_SUPPORT_ROM_MGCG */ - adev->smuio.funcs->get_clock_gating_state(adev, flags); + if (adev->smuio.funcs && adev->smuio.funcs->get_clock_gating_state) + adev->smuio.funcs->get_clock_gating_state(adev, flags); - adev->df.funcs->get_clockgating_state(adev, flags); + if (adev->df.funcs && adev->df.funcs->get_clockgating_state) + adev->df.funcs->get_clockgating_state(adev, flags); } static int soc15_common_set_powergating_state(void *handle,