linux_dsm_epyc7002/drivers/gpu/drm/amd
Andrew Shadura f20024d8ba drm/amd/powerplay: return false instead of -EINVAL
Returning -EINVAL from a bool-returning function
phm_check_smc_update_required_for_display_configuration has an unexpected
effect of returning true, which is probably not what was intended.
Replace -EINVAL by false.

The only place this function is called from is
psm_adjust_power_state_dynamic in
drivers/gpu/drm/amd/powerplay/eventmgr/psm.c:106:

	if (!equal || phm_check_smc_update_required_for_display_configuration(hwmgr)) {
		phm_apply_state_adjust_rules(hwmgr, requested, pcurrent);
		phm_set_power_state(hwmgr, &pcurrent->hardware, &requested->hardware);
		hwmgr->current_ps = requested;
	}

It seems to expect a boolean value here.

This issue has been found using the following Coccinelle semantic patch
written by Peter Senna Tschudin:
<smpl>
@@
identifier f;
constant C;
typedef bool;
@@
bool f (...){
<+...
* return -C;
...+>
}
</smpl>

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Andrew Shadura <andrew.shadura@collabora.co.uk>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-11-08 11:43:05 -05:00
..
acp drm/amd: add Kconfig dependency for ACP on DRM_AMDGPU 2016-05-25 09:44:15 -04:00
amdgpu drm/amdgpu: fix crash in acp_hw_fini 2016-11-07 12:40:52 -05:00
amdkfd Linux 4.8-rc8 2016-09-28 12:08:49 +10:00
include drm/amdgpu: fix amdgpu_need_full_reset (v2) 2016-10-14 11:51:04 -04:00
powerplay drm/amd/powerplay: return false instead of -EINVAL 2016-11-08 11:43:05 -05:00
scheduler drm/amd: fix scheduler fence teardown order v2 2016-10-31 12:43:20 -04:00