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drm/amd/powerplay: fix uninitialized variable

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commit 8b95f4f730 upstream.

refresh_rate was not initialized when program
display gap.
this patch can fix vce ring test failed
when do S3 on Polaris10.

bug: https://bugs.freedesktop.org/show_bug.cgi?id=103102
bug: https://bugzilla.kernel.org/show_bug.cgi?id=196615
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rex Zhu
2017-10-20 15:07:41 +08:00
committed by Greg Kroah-Hartman
parent 5a0dbfeed4
commit e6b5e3b634
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
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@@ -825,7 +825,7 @@ uint32_t smu7_get_xclk(struct pp_hwmgr *hwmgr)
{
uint32_t reference_clock, tmp;
struct cgs_display_info info = {0};
struct cgs_mode_info mode_info;
struct cgs_mode_info mode_info = {0};
info.mode_info = &mode_info;
@@ -3718,10 +3718,9 @@ int smu7_program_display_gap(struct pp_hwmgr *hwmgr)
uint32_t ref_clock;
uint32_t refresh_rate = 0;
struct cgs_display_info info = {0};
struct cgs_mode_info mode_info;
struct cgs_mode_info mode_info = {0};
info.mode_info = &mode_info;
cgs_get_active_displays_info(hwmgr->device, &info);
num_active_displays = info.display_count;
@@ -3737,6 +3736,7 @@ int smu7_program_display_gap(struct pp_hwmgr *hwmgr)
frame_time_in_us = 1000000 / refresh_rate;
pre_vbi_time_in_us = frame_time_in_us - 200 - mode_info.vblank_time_us;
data->frame_time_x2 = frame_time_in_us * 2 / 100;
display_gap2 = pre_vbi_time_in_us * (ref_clock / 100);