drm/amd/display: Remove inaccessible registers from DMU diagnostics

[Why]
SEC_CNTL isn't readable by x86 and can block Z8 entry if read.

[How]
Remove the read.

Reviewed-by: Ovidiu Bunea <ovidiu.bunea@amd.com>
Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn35.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn35.c
index 3be315f1a4434851d6a64944cd606ce2b3475147..e5e77bd3c31ea1b569d9d8574c0f9f49ef44a731 100644 (file)
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn35.c
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn35.c
@@ -464,7 +464,7 @@ uint32_t dmub_dcn35_get_current_time(struct dmub_srv *dmub)
 
 void dmub_dcn35_get_diagnostic_data(struct dmub_srv *dmub, struct dmub_diagnostic_data *diag_data)
 {
-       uint32_t is_dmub_enabled, is_soft_reset, is_sec_reset;
+       uint32_t is_dmub_enabled, is_soft_reset;
        uint32_t is_traceport_enabled, is_cw6_enabled;
 
        if (!dmub || !diag_data)
@@ -514,9 +514,6 @@ void dmub_dcn35_get_diagnostic_data(struct dmub_srv *dmub, struct dmub_diagnosti
        REG_GET(DMCUB_CNTL2, DMCUB_SOFT_RESET, &is_soft_reset);
        diag_data->is_dmcub_soft_reset = is_soft_reset;
 
-       REG_GET(DMCUB_SEC_CNTL, DMCUB_SEC_RESET_STATUS, &is_sec_reset);
-       diag_data->is_dmcub_secure_reset = is_sec_reset;
-
        REG_GET(DMCUB_CNTL, DMCUB_TRACEPORT_EN, &is_traceport_enabled);
        diag_data->is_traceport_en  = is_traceport_enabled;