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drm/amd/display: Check return value of drm helper

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If driver fails to update update VCPI allocation during
compute_mst_dsc_configs_for_state - fail the function
by return early.

Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Mikita Lipski 2020-01-07 11:25:54 -05:00 committed by Alex Deucher
parent 8c20a1ed9b
commit 34d95c3d5f
1 changed files with 54 additions and 45 deletions
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99
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
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@ -621,37 +621,41 @@ static void increase_dsc_bpp(struct drm_atomic_state *state,
if (initial_slack[next_index] > fair_pbn_alloc) {
vars[next_index].pbn += fair_pbn_alloc;
drm_dp_atomic_find_vcpi_slots(state,
params[next_index].port->mgr,
params[next_index].port,
vars[next_index].pbn,
dm_mst_get_pbn_divider(dc_link));
if (drm_dp_atomic_find_vcpi_slots(state,
params[next_index].port->mgr,
params[next_index].port,
vars[next_index].pbn,\
dm_mst_get_pbn_divider(dc_link)) < 0)
return;
if (!drm_dp_mst_atomic_check(state)) {
vars[next_index].bpp_x16 = bpp_x16_from_pbn(params[next_index], vars[next_index].pbn);
} else {
vars[next_index].pbn -= fair_pbn_alloc;
drm_dp_atomic_find_vcpi_slots(state,
params[next_index].port->mgr,
params[next_index].port,
vars[next_index].pbn,
dm_mst_get_pbn_divider(dc_link));
if (drm_dp_atomic_find_vcpi_slots(state,
params[next_index].port->mgr,
params[next_index].port,
vars[next_index].pbn,
dm_mst_get_pbn_divider(dc_link)) < 0)
return;
}
} else {
vars[next_index].pbn += initial_slack[next_index];
drm_dp_atomic_find_vcpi_slots(state,
params[next_index].port->mgr,
params[next_index].port,
vars[next_index].pbn,
dm_mst_get_pbn_divider(dc_link));
if (drm_dp_atomic_find_vcpi_slots(state,
params[next_index].port->mgr,
params[next_index].port,
vars[next_index].pbn,
dm_mst_get_pbn_divider(dc_link)) < 0)
return;
if (!drm_dp_mst_atomic_check(state)) {
vars[next_index].bpp_x16 = params[next_index].bw_range.max_target_bpp_x16;
} else {
vars[next_index].pbn -= initial_slack[next_index];
drm_dp_atomic_find_vcpi_slots(state,
params[next_index].port->mgr,
params[next_index].port,
vars[next_index].pbn,
dm_mst_get_pbn_divider(dc_link));
if (drm_dp_atomic_find_vcpi_slots(state,
params[next_index].port->mgr,
params[next_index].port,
vars[next_index].pbn,
dm_mst_get_pbn_divider(dc_link)) < 0)
return;
}
}
@ -700,22 +704,24 @@ static void try_disable_dsc(struct drm_atomic_state *state,
break;
vars[next_index].pbn = kbps_to_peak_pbn(params[next_index].bw_range.stream_kbps);
drm_dp_atomic_find_vcpi_slots(state,
params[next_index].port->mgr,
params[next_index].port,
vars[next_index].pbn,
0);
if (drm_dp_atomic_find_vcpi_slots(state,
params[next_index].port->mgr,
params[next_index].port,
vars[next_index].pbn,
0) < 0)
return;
if (!drm_dp_mst_atomic_check(state)) {
vars[next_index].dsc_enabled = false;
vars[next_index].bpp_x16 = 0;
} else {
vars[next_index].pbn = kbps_to_peak_pbn(params[next_index].bw_range.max_kbps);
drm_dp_atomic_find_vcpi_slots(state,
params[next_index].port->mgr,
params[next_index].port,
vars[next_index].pbn,
dm_mst_get_pbn_divider(dc_link));
if (drm_dp_atomic_find_vcpi_slots(state,
params[next_index].port->mgr,
params[next_index].port,
vars[next_index].pbn,
dm_mst_get_pbn_divider(dc_link)) < 0)
return;
}
tried[next_index] = true;
@ -769,11 +775,12 @@ static bool compute_mst_dsc_configs_for_link(struct drm_atomic_state *state,
vars[i].pbn = kbps_to_peak_pbn(params[i].bw_range.stream_kbps);
vars[i].dsc_enabled = false;
vars[i].bpp_x16 = 0;
drm_dp_atomic_find_vcpi_slots(state,
params[i].port->mgr,
params[i].port,
vars[i].pbn,
0);
if (drm_dp_atomic_find_vcpi_slots(state,
params[i].port->mgr,
params[i].port,
vars[i].pbn,
0) < 0)
return false;
}
if (!drm_dp_mst_atomic_check(state)) {
set_dsc_configs_from_fairness_vars(params, vars, count);
@ -786,20 +793,22 @@ static bool compute_mst_dsc_configs_for_link(struct drm_atomic_state *state,
vars[i].pbn = kbps_to_peak_pbn(params[i].bw_range.min_kbps);
vars[i].dsc_enabled = true;
vars[i].bpp_x16 = params[i].bw_range.min_target_bpp_x16;
drm_dp_atomic_find_vcpi_slots(state,
params[i].port->mgr,
params[i].port,
vars[i].pbn,
dm_mst_get_pbn_divider(dc_link));
if (drm_dp_atomic_find_vcpi_slots(state,
params[i].port->mgr,
params[i].port,
vars[i].pbn,
dm_mst_get_pbn_divider(dc_link)) < 0)
return false;
} else {
vars[i].pbn = kbps_to_peak_pbn(params[i].bw_range.stream_kbps);
vars[i].dsc_enabled = false;
vars[i].bpp_x16 = 0;
drm_dp_atomic_find_vcpi_slots(state,
params[i].port->mgr,
params[i].port,
vars[i].pbn,
0);
if (drm_dp_atomic_find_vcpi_slots(state,
params[i].port->mgr,
params[i].port,
vars[i].pbn,
0) < 0)
return false;
}
}
if (drm_dp_mst_atomic_check(state))