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drm/amdgpu: Add NULL checks for function pointers

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[ Upstream commit 81577503efb49f4ad76af22f9941d72900ef4aab ]

Check if function is implemented before making the call.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Lijo Lazar 2023-11-29 12:37:34 +05:30 committed by Greg Kroah-Hartman
parent 5337fb3eba
commit 92decec3ca
1 changed files with 8 additions and 4 deletions
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12
drivers/gpu/drm/amd/amdgpu/soc15.c
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@ -1411,9 +1411,11 @@ 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)) {
@ -1429,9 +1431,11 @@ 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,