drm/amd/display: Fix comparison error in dcn21 DML

[ Upstream commit ec3102dc6b36c692104c4a0546d4119de59a3bc1 ]

[why]
A comparison error made it possible to not iterate through all the
specified prefetch modes.

[how]
Correct "<" to "<="

Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Yongqiang Sun <Yongqiang.Sun@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Victor Lu <victorchengchi.lu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c b/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c
index 367c82b5ab4c17374b065ae7dc1939b795b599b7..c09bca3350687fc9493cd951b7ac00646edea048 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c
@@ -4888,7 +4888,7 @@ void dml21_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
                                }
                        } while ((locals->PrefetchSupported[i][j] != true || locals->VRatioInPrefetchSupported[i][j] != true)
                                        && (mode_lib->vba.NextMaxVStartup != mode_lib->vba.MaxMaxVStartup[0][0]
-                                               || mode_lib->vba.NextPrefetchMode < mode_lib->vba.MaxPrefetchMode));
+                                               || mode_lib->vba.NextPrefetchMode <= mode_lib->vba.MaxPrefetchMode));
 
                        if (locals->PrefetchSupported[i][j] == true && locals->VRatioInPrefetchSupported[i][j] == true) {
                                mode_lib->vba.BandwidthAvailableForImmediateFlip = locals->ReturnBWPerState[i][0];