[PATCH 5.19 192/192] drm/amd/display: Removing assert statements for Linux

Greg Kroah-Hartman
2022-09-13T14:31:53Z

From: Saaem Rizvi <SyedSaaem.Rizvi@amd.com>

commit 149f6d1a6035a7aa6595ac6eeb9c8f566b2103cd upstream.

[WHY]
Assert statements causing several bugs on Linux DM

[HOW]
Removing assert statement for Linux DM
(ASSERT(result == VBIOSSMC_Result_OK)). Also adding
logging statements for setting dcfclk.

Bug: https://bugzilla.kernel.org/show_bug.cgi?id=216092
Fixes: c1b972a18d05 ("drm/amd/display: Insert pulling smu busy status before sending another request")
Reviewed-by: Gabe Teeger <Gabe.Teeger@amd.com>
Acked-by: Solomon Chiu <solomon.chiu@amd.com>
Signed-off-by: Saaem Rizvi <SyedSaaem.Rizvi@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c | 8 ++++++--
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/dcn301_smu.c | 7 ++++++-
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_smu.c | 8 ++++++--
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_smu.c | 8 ++++++--
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn316/dcn316_smu.c | 8 ++++++--
5 files changed, 30 insertions(+), 9 deletions(-)

--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c
@@ -101,9 +101,9 @@ static int rn_vbios_smu_send_msg_with_pa
uint32_t result;

result = rn_smu_wait_for_response(clk_mgr, 10, 200000);
- ASSERT(result == VBIOSSMC_Result_OK);

- smu_print("SMU response after wait: %d\n", result);
+ if (result != VBIOSSMC_Result_OK)
+ smu_print("SMU Response was not OK. SMU response after wait received is: %d\n", result);

if (result == VBIOSSMC_Status_BUSY) {
return -1;
@@ -188,6 +188,10 @@ int rn_vbios_smu_set_hard_min_dcfclk(str
VBIOSSMC_MSG_SetHardMinDcfclkByFreq,
khz_to_mhz_ceil(requested_dcfclk_khz));

+#ifdef DBG
+ smu_print("actual_dcfclk_set_mhz %d is set to : %d\n", actual_dcfclk_set_mhz, actual_dcfclk_set_mhz * 1000);
+#endif
+
return actual_dcfclk_set_mhz * 1000;
}

--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/dcn301_smu.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/dcn301_smu.c
@@ -102,7 +102,8 @@ static int dcn301_smu_send_msg_with_para

result = dcn301_smu_wait_for_response(clk_mgr, 10, 200000);

- smu_print("SMU response after wait: %d\n", result);
+ if (result != VBIOSSMC_Result_OK)
+ smu_print("SMU Response was not OK. SMU response after wait received is: %d\n", result);

if (result == VBIOSSMC_Status_BUSY) {
return -1;
@@ -179,6 +180,10 @@ int dcn301_smu_set_hard_min_dcfclk(struc
VBIOSSMC_MSG_SetHardMinDcfclkByFreq,
khz_to_mhz_ceil(requested_dcfclk_khz));

+#ifdef DBG
+ smu_print("actual_dcfclk_set_mhz %d is set to : %d\n", actual_dcfclk_set_mhz, actual_dcfclk_set_mhz * 1000);
+#endif
+
return actual_dcfclk_set_mhz * 1000;
}

--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_smu.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_smu.c
@@ -108,9 +108,9 @@ static int dcn31_smu_send_msg_with_param
uint32_t result;

result = dcn31_smu_wait_for_response(clk_mgr, 10, 200000);
- ASSERT(result == VBIOSSMC_Result_OK);

- smu_print("SMU response after wait: %d\n", result);
+ if (result != VBIOSSMC_Result_OK)
+ smu_print("SMU Response was not OK. SMU response after wait received is: %d\n", result);

if (result == VBIOSSMC_Status_BUSY) {
return -1;
@@ -202,6 +202,10 @@ int dcn31_smu_set_hard_min_dcfclk(struct
VBIOSSMC_MSG_SetHardMinDcfclkByFreq,
khz_to_mhz_ceil(requested_dcfclk_khz));

+#ifdef DBG
+ smu_print("actual_dcfclk_set_mhz %d is set to : %d\n", actual_dcfclk_set_mhz, actual_dcfclk_set_mhz * 1000);
+#endif
+
return actual_dcfclk_set_mhz * 1000;
}

--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_smu.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_smu.c
@@ -136,9 +136,9 @@ static int dcn315_smu_send_msg_with_para
uint32_t result;

result = dcn315_smu_wait_for_response(clk_mgr, 10, 200000);
- ASSERT(result == VBIOSSMC_Result_OK);

- smu_print("SMU response after wait: %d\n", result);
+ if (result != VBIOSSMC_Result_OK)
+ smu_print("SMU Response was not OK. SMU response after wait received is: %d\n", result);

if (result == VBIOSSMC_Status_BUSY) {
return -1;
@@ -205,6 +205,10 @@ int dcn315_smu_set_hard_min_dcfclk(struc
VBIOSSMC_MSG_SetHardMinDcfclkByFreq,
khz_to_mhz_ceil(requested_dcfclk_khz));

+#ifdef DBG
+ smu_print("actual_dcfclk_set_mhz %d is set to : %d\n", actual_dcfclk_set_mhz, actual_dcfclk_set_mhz * 1000);
+#endif
+
return actual_dcfclk_set_mhz * 1000;
}

--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn316/dcn316_smu.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn316/dcn316_smu.c
@@ -124,9 +124,9 @@ static int dcn316_smu_send_msg_with_para
uint32_t result;

result = dcn316_smu_wait_for_response(clk_mgr, 10, 200000);
- ASSERT(result == VBIOSSMC_Result_OK);

- smu_print("SMU response after wait: %d\n", result);
+ if (result != VBIOSSMC_Result_OK)
+ smu_print("SMU Response was not OK. SMU response after wait received is: %d\n", result);

if (result == VBIOSSMC_Status_BUSY) {
return -1;
@@ -191,6 +191,10 @@ int dcn316_smu_set_hard_min_dcfclk(struc
VBIOSSMC_MSG_SetHardMinDcfclkByFreq,
khz_to_mhz_ceil(requested_dcfclk_khz));

+#ifdef DBG
+ smu_print("actual_dcfclk_set_mhz %d is set to : %d\n", actual_dcfclk_set_mhz, actual_dcfclk_set_mhz * 1000);
+#endif
+
return actual_dcfclk_set_mhz * 1000;
}