[PATCH] drm/amdgpu/pm: fix powerplay OD interface

Quan, Evan Evan.Quan at amd.com
Wed Nov 24 02:21:41 UTC 2021


[AMD Official Use Only]

Acked-by: Evan Quan <evan.quan at amd.com>

> -----Original Message-----
> From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Alex
> Deucher
> Sent: Wednesday, November 24, 2021 4:01 AM
> To: amd-gfx at lists.freedesktop.org
> Cc: Deucher, Alexander <Alexander.Deucher at amd.com>
> Subject: [PATCH] drm/amdgpu/pm: fix powerplay OD interface
> 
> The overclocking interface currently appends data to a string.  Revert back to
> using sprintf().
> 
> Bug:
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgitla
> b.freedesktop.org%2Fdrm%2Famd%2F-
> %2Fissues%2F1774&data=04%7C01%7Cevan.quan%40amd.com%7Cfc28
> 95d7646643ab7b8d08d9aebc0fb6%7C3dd8961fe4884e608e11a82d994e183d%
> 7C0%7C0%7C637732945016986765%7CUnknown%7CTWFpbGZsb3d8eyJWIjoi
> MC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C300
> 0&sdata=UgMIgPfWnSKlGFszZHUBlYQcgzHwZ4zAlCmLMhhA%2Ftw%3D
> &reserved=0
> Fixes: 6db0c87a0a8ee1 ("amdgpu/pm: Replace hwmgr smu usage of sprintf
> with sysfs_emit")
> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
> ---
>  .../drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.c  | 20 +++----
>  .../drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c   | 24 ++++----
>  .../drm/amd/pm/powerplay/hwmgr/smu8_hwmgr.c   |  6 +-
>  .../drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c | 28 +++++----
>   .../drm/amd/pm/powerplay/hwmgr/vega12_hwmgr.c | 10 ++--
>   .../drm/amd/pm/powerplay/hwmgr/vega20_hwmgr.c | 58 +++++++++------
> ----
>  6 files changed, 67 insertions(+), 79 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.c
> b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.c
> index 258c573acc97..1f406f21b452 100644
> --- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.c
> +++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.c
> @@ -1024,8 +1024,6 @@ static int smu10_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  	uint32_t min_freq, max_freq = 0;
>  	uint32_t ret = 0;
> 
> -	phm_get_sysfs_buf(&buf, &size);
> -
>  	switch (type) {
>  	case PP_SCLK:
>  		smum_send_msg_to_smc(hwmgr,
> PPSMC_MSG_GetGfxclkFrequency, &now); @@ -1038,13 +1036,13 @@
> static int smu10_print_clock_levels(struct pp_hwmgr *hwmgr,
>  		else
>  			i = 1;
> 
> -		size += sysfs_emit_at(buf, size, "0: %uMhz %s\n",
> +		size += sprintf(buf + size, "0: %uMhz %s\n",
>  					data->gfx_min_freq_limit/100,
>  					i == 0 ? "*" : "");
> -		size += sysfs_emit_at(buf, size, "1: %uMhz %s\n",
> +		size += sprintf(buf + size, "1: %uMhz %s\n",
>  					i == 1 ? now :
> SMU10_UMD_PSTATE_GFXCLK,
>  					i == 1 ? "*" : "");
> -		size += sysfs_emit_at(buf, size, "2: %uMhz %s\n",
> +		size += sprintf(buf + size, "2: %uMhz %s\n",
>  					data->gfx_max_freq_limit/100,
>  					i == 2 ? "*" : "");
>  		break;
> @@ -1052,7 +1050,7 @@ static int smu10_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  		smum_send_msg_to_smc(hwmgr,
> PPSMC_MSG_GetFclkFrequency, &now);
> 
>  		for (i = 0; i < mclk_table->count; i++)
> -			size += sysfs_emit_at(buf, size, "%d: %uMhz %s\n",
> +			size += sprintf(buf + size, "%d: %uMhz %s\n",
>  					i,
>  					mclk_table->entries[i].clk / 100,
>  					((mclk_table->entries[i].clk / 100)
> @@ -1067,10 +1065,10 @@ static int smu10_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  			if (ret)
>  				return ret;
> 
> -			size += sysfs_emit_at(buf, size, "%s:\n", "OD_SCLK");
> -			size += sysfs_emit_at(buf, size, "0: %10uMhz\n",
> +			size += sprintf(buf + size, "%s:\n", "OD_SCLK");
> +			size += sprintf(buf + size, "0: %10uMhz\n",
>  			(data->gfx_actual_soft_min_freq > 0) ? data-
> >gfx_actual_soft_min_freq : min_freq);
> -			size += sysfs_emit_at(buf, size, "1: %10uMhz\n",
> +			size += sprintf(buf + size, "1: %10uMhz\n",
>  			(data->gfx_actual_soft_max_freq > 0) ? data-
> >gfx_actual_soft_max_freq : max_freq);
>  		}
>  		break;
> @@ -1083,8 +1081,8 @@ static int smu10_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  			if (ret)
>  				return ret;
> 
> -			size += sysfs_emit_at(buf, size, "%s:\n",
> "OD_RANGE");
> -			size += sysfs_emit_at(buf, size,
> "SCLK: %7uMHz %10uMHz\n",
> +			size += sprintf(buf + size, "%s:\n", "OD_RANGE");
> +			size += sprintf(buf + size,
> "SCLK: %7uMHz %10uMHz\n",
>  				min_freq, max_freq);
>  		}
>  		break;
> diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
> b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
> index aceebf584225..611969bf4520 100644
> --- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
> +++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
> @@ -4914,8 +4914,6 @@ static int smu7_print_clock_levels(struct pp_hwmgr
> *hwmgr,
>  	int size = 0;
>  	uint32_t i, now, clock, pcie_speed;
> 
> -	phm_get_sysfs_buf(&buf, &size);
> -
>  	switch (type) {
>  	case PP_SCLK:
>  		smum_send_msg_to_smc(hwmgr,
> PPSMC_MSG_API_GetSclkFrequency, &clock); @@ -4928,7 +4926,7 @@
> static int smu7_print_clock_levels(struct pp_hwmgr *hwmgr,
>  		now = i;
> 
>  		for (i = 0; i < sclk_table->count; i++)
> -			size += sysfs_emit_at(buf, size, "%d: %uMhz %s\n",
> +			size += sprintf(buf + size, "%d: %uMhz %s\n",
>  					i, sclk_table->dpm_levels[i].value /
> 100,
>  					(i == now) ? "*" : "");
>  		break;
> @@ -4943,7 +4941,7 @@ static int smu7_print_clock_levels(struct pp_hwmgr
> *hwmgr,
>  		now = i;
> 
>  		for (i = 0; i < mclk_table->count; i++)
> -			size += sysfs_emit_at(buf, size, "%d: %uMhz %s\n",
> +			size += sprintf(buf + size, "%d: %uMhz %s\n",
>  					i, mclk_table->dpm_levels[i].value /
> 100,
>  					(i == now) ? "*" : "");
>  		break;
> @@ -4957,7 +4955,7 @@ static int smu7_print_clock_levels(struct pp_hwmgr
> *hwmgr,
>  		now = i;
> 
>  		for (i = 0; i < pcie_table->count; i++)
> -			size += sysfs_emit_at(buf, size, "%d: %s %s\n", i,
> +			size += sprintf(buf + size, "%d: %s %s\n", i,
>  					(pcie_table->dpm_levels[i].value ==
> 0) ? "2.5GT/s, x8" :
>  					(pcie_table->dpm_levels[i].value ==
> 1) ? "5.0GT/s, x16" :
>  					(pcie_table->dpm_levels[i].value ==
> 2) ? "8.0GT/s, x16" : "", @@ -4965,32 +4963,32 @@ static int
> smu7_print_clock_levels(struct pp_hwmgr *hwmgr,
>  		break;
>  	case OD_SCLK:
>  		if (hwmgr->od_enabled) {
> -			size += sysfs_emit_at(buf, size, "%s:\n", "OD_SCLK");
> +			size += sprintf(buf + size, "%s:\n", "OD_SCLK");
>  			for (i = 0; i < odn_sclk_table->num_of_pl; i++)
> -				size += sysfs_emit_at(buf, size,
> "%d: %10uMHz %10umV\n",
> +				size += sprintf(buf + size,
> "%d: %10uMHz %10umV\n",
>  					i, odn_sclk_table-
> >entries[i].clock/100,
>  					odn_sclk_table->entries[i].vddc);
>  		}
>  		break;
>  	case OD_MCLK:
>  		if (hwmgr->od_enabled) {
> -			size += sysfs_emit_at(buf, size, "%s:\n",
> "OD_MCLK");
> +			size += sprintf(buf + size, "%s:\n", "OD_MCLK");
>  			for (i = 0; i < odn_mclk_table->num_of_pl; i++)
> -				size += sysfs_emit_at(buf, size,
> "%d: %10uMHz %10umV\n",
> +				size += sprintf(buf + size,
> "%d: %10uMHz %10umV\n",
>  					i, odn_mclk_table-
> >entries[i].clock/100,
>  					odn_mclk_table->entries[i].vddc);
>  		}
>  		break;
>  	case OD_RANGE:
>  		if (hwmgr->od_enabled) {
> -			size += sysfs_emit_at(buf, size, "%s:\n",
> "OD_RANGE");
> -			size += sysfs_emit_at(buf, size,
> "SCLK: %7uMHz %10uMHz\n",
> +			size += sprintf(buf + size, "%s:\n", "OD_RANGE");
> +			size += sprintf(buf + size,
> "SCLK: %7uMHz %10uMHz\n",
>  				data-
> >golden_dpm_table.sclk_table.dpm_levels[0].value/100,
>  				hwmgr-
> >platform_descriptor.overdriveLimit.engineClock/100);
> -			size += sysfs_emit_at(buf, size,
> "MCLK: %7uMHz %10uMHz\n",
> +			size += sprintf(buf + size,
> "MCLK: %7uMHz %10uMHz\n",
>  				data-
> >golden_dpm_table.mclk_table.dpm_levels[0].value/100,
>  				hwmgr-
> >platform_descriptor.overdriveLimit.memoryClock/100);
> -			size += sysfs_emit_at(buf, size,
> "VDDC: %7umV %11umV\n",
> +			size += sprintf(buf + size,
> "VDDC: %7umV %11umV\n",
>  				data->odn_dpm_table.min_vddc,
>  				data->odn_dpm_table.max_vddc);
>  		}
> diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu8_hwmgr.c
> b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu8_hwmgr.c
> index 8e28a8eecefc..03bf8f069222 100644
> --- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu8_hwmgr.c
> +++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu8_hwmgr.c
> @@ -1550,8 +1550,6 @@ static int smu8_print_clock_levels(struct pp_hwmgr
> *hwmgr,
>  	uint32_t i, now;
>  	int size = 0;
> 
> -	phm_get_sysfs_buf(&buf, &size);
> -
>  	switch (type) {
>  	case PP_SCLK:
>  		now = PHM_GET_FIELD(cgs_read_ind_register(hwmgr-
> >device,
> @@ -1561,7 +1559,7 @@ static int smu8_print_clock_levels(struct pp_hwmgr
> *hwmgr,
>  				CURR_SCLK_INDEX);
> 
>  		for (i = 0; i < sclk_table->count; i++)
> -			size += sysfs_emit_at(buf, size, "%d: %uMhz %s\n",
> +			size += sprintf(buf + size, "%d: %uMhz %s\n",
>  					i, sclk_table->entries[i].clk / 100,
>  					(i == now) ? "*" : "");
>  		break;
> @@ -1573,7 +1571,7 @@ static int smu8_print_clock_levels(struct pp_hwmgr
> *hwmgr,
>  				CURR_MCLK_INDEX);
> 
>  		for (i = SMU8_NUM_NBPMEMORYCLOCK; i > 0; i--)
> -			size += sysfs_emit_at(buf, size, "%d: %uMhz %s\n",
> +			size += sprintf(buf + size, "%d: %uMhz %s\n",
>  					SMU8_NUM_NBPMEMORYCLOCK-i,
> data->sys_info.nbp_memory_clock[i-1] / 100,
>  					(SMU8_NUM_NBPMEMORYCLOCK-i
> == now) ? "*" : "");
>  		break;
> diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c
> b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c
> index c981fc2882f0..e6336654c565 100644
> --- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c
> +++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c
> @@ -4639,8 +4639,6 @@ static int vega10_print_clock_levels(struct
> pp_hwmgr *hwmgr,
> 
>  	int i, now, size = 0, count = 0;
> 
> -	phm_get_sysfs_buf(&buf, &size);
> -
>  	switch (type) {
>  	case PP_SCLK:
>  		if (data->registry_data.sclk_dpm_key_disabled)
> @@ -4654,7 +4652,7 @@ static int vega10_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  		else
>  			count = sclk_table->count;
>  		for (i = 0; i < count; i++)
> -			size += sysfs_emit_at(buf, size, "%d: %uMhz %s\n",
> +			size += sprintf(buf + size, "%d: %uMhz %s\n",
>  					i, sclk_table->dpm_levels[i].value /
> 100,
>  					(i == now) ? "*" : "");
>  		break;
> @@ -4665,7 +4663,7 @@ static int vega10_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  		smum_send_msg_to_smc(hwmgr,
> PPSMC_MSG_GetCurrentUclkIndex, &now);
> 
>  		for (i = 0; i < mclk_table->count; i++)
> -			size += sysfs_emit_at(buf, size, "%d: %uMhz %s\n",
> +			size += sprintf(buf + size, "%d: %uMhz %s\n",
>  					i, mclk_table->dpm_levels[i].value /
> 100,
>  					(i == now) ? "*" : "");
>  		break;
> @@ -4676,7 +4674,7 @@ static int vega10_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  		smum_send_msg_to_smc(hwmgr,
> PPSMC_MSG_GetCurrentSocclkIndex, &now);
> 
>  		for (i = 0; i < soc_table->count; i++)
> -			size += sysfs_emit_at(buf, size, "%d: %uMhz %s\n",
> +			size += sprintf(buf + size, "%d: %uMhz %s\n",
>  					i, soc_table->dpm_levels[i].value /
> 100,
>  					(i == now) ? "*" : "");
>  		break;
> @@ -4688,7 +4686,7 @@ static int vega10_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  				PPSMC_MSG_GetClockFreqMHz,
> CLK_DCEFCLK, &now);
> 
>  		for (i = 0; i < dcef_table->count; i++)
> -			size += sysfs_emit_at(buf, size, "%d: %uMhz %s\n",
> +			size += sprintf(buf + size, "%d: %uMhz %s\n",
>  					i, dcef_table->dpm_levels[i].value /
> 100,
>  					(dcef_table->dpm_levels[i].value /
> 100 == now) ?
>  					"*" : "");
> @@ -4702,7 +4700,7 @@ static int vega10_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  			gen_speed = pptable->PcieGenSpeed[i];
>  			lane_width = pptable->PcieLaneCount[i];
> 
> -			size += sysfs_emit_at(buf, size, "%d: %s %s %s\n", i,
> +			size += sprintf(buf + size, "%d: %s %s %s\n", i,
>  					(gen_speed == 0) ? "2.5GT/s," :
>  					(gen_speed == 1) ? "5.0GT/s," :
>  					(gen_speed == 2) ? "8.0GT/s," :
> @@ -4721,34 +4719,34 @@ static int vega10_print_clock_levels(struct
> pp_hwmgr *hwmgr,
> 
>  	case OD_SCLK:
>  		if (hwmgr->od_enabled) {
> -			size += sysfs_emit_at(buf, size, "%s:\n", "OD_SCLK");
> +			size += sprintf(buf + size, "%s:\n", "OD_SCLK");
>  			podn_vdd_dep = &data-
> >odn_dpm_table.vdd_dep_on_sclk;
>  			for (i = 0; i < podn_vdd_dep->count; i++)
> -				size += sysfs_emit_at(buf, size,
> "%d: %10uMhz %10umV\n",
> +				size += sprintf(buf + size,
> "%d: %10uMhz %10umV\n",
>  					i, podn_vdd_dep->entries[i].clk / 100,
>  						podn_vdd_dep-
> >entries[i].vddc);
>  		}
>  		break;
>  	case OD_MCLK:
>  		if (hwmgr->od_enabled) {
> -			size += sysfs_emit_at(buf, size, "%s:\n",
> "OD_MCLK");
> +			size += sprintf(buf + size, "%s:\n", "OD_MCLK");
>  			podn_vdd_dep = &data-
> >odn_dpm_table.vdd_dep_on_mclk;
>  			for (i = 0; i < podn_vdd_dep->count; i++)
> -				size += sysfs_emit_at(buf, size,
> "%d: %10uMhz %10umV\n",
> +				size += sprintf(buf + size,
> "%d: %10uMhz %10umV\n",
>  					i, podn_vdd_dep->entries[i].clk/100,
>  						podn_vdd_dep-
> >entries[i].vddc);
>  		}
>  		break;
>  	case OD_RANGE:
>  		if (hwmgr->od_enabled) {
> -			size += sysfs_emit_at(buf, size, "%s:\n",
> "OD_RANGE");
> -			size += sysfs_emit_at(buf, size,
> "SCLK: %7uMHz %10uMHz\n",
> +			size += sprintf(buf + size, "%s:\n", "OD_RANGE");
> +			size += sprintf(buf + size,
> "SCLK: %7uMHz %10uMHz\n",
>  				data-
> >golden_dpm_table.gfx_table.dpm_levels[0].value/100,
>  				hwmgr-
> >platform_descriptor.overdriveLimit.engineClock/100);
> -			size += sysfs_emit_at(buf, size,
> "MCLK: %7uMHz %10uMHz\n",
> +			size += sprintf(buf + size,
> "MCLK: %7uMHz %10uMHz\n",
>  				data-
> >golden_dpm_table.mem_table.dpm_levels[0].value/100,
>  				hwmgr-
> >platform_descriptor.overdriveLimit.memoryClock/100);
> -			size += sysfs_emit_at(buf, size,
> "VDDC: %7umV %11umV\n",
> +			size += sprintf(buf + size,
> "VDDC: %7umV %11umV\n",
>  				data->odn_dpm_table.min_vddc,
>  				data->odn_dpm_table.max_vddc);
>  		}
> diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega12_hwmgr.c
> b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega12_hwmgr.c
> index f7e783e1c888..a2f4d6773d45 100644
> --- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega12_hwmgr.c
> +++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega12_hwmgr.c
> @@ -2246,8 +2246,6 @@ static int vega12_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  	int i, now, size = 0;
>  	struct pp_clock_levels_with_latency clocks;
> 
> -	phm_get_sysfs_buf(&buf, &size);
> -
>  	switch (type) {
>  	case PP_SCLK:
>  		PP_ASSERT_WITH_CODE(
> @@ -2260,7 +2258,7 @@ static int vega12_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  				"Attempt to get gfx clk levels Failed!",
>  				return -1);
>  		for (i = 0; i < clocks.num_levels; i++)
> -			size += sysfs_emit_at(buf, size, "%d: %uMhz %s\n",
> +			size += sprintf(buf + size, "%d: %uMhz %s\n",
>  				i, clocks.data[i].clocks_in_khz / 1000,
>  				(clocks.data[i].clocks_in_khz / 1000 == now /
> 100) ? "*" : "");
>  		break;
> @@ -2276,7 +2274,7 @@ static int vega12_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  				"Attempt to get memory clk levels Failed!",
>  				return -1);
>  		for (i = 0; i < clocks.num_levels; i++)
> -			size += sysfs_emit_at(buf, size, "%d: %uMhz %s\n",
> +			size += sprintf(buf + size, "%d: %uMhz %s\n",
>  				i, clocks.data[i].clocks_in_khz / 1000,
>  				(clocks.data[i].clocks_in_khz / 1000 == now /
> 100) ? "*" : "");
>  		break;
> @@ -2294,7 +2292,7 @@ static int vega12_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  				"Attempt to get soc clk levels Failed!",
>  				return -1);
>  		for (i = 0; i < clocks.num_levels; i++)
> -			size += sysfs_emit_at(buf, size, "%d: %uMhz %s\n",
> +			size += sprintf(buf + size, "%d: %uMhz %s\n",
>  				i, clocks.data[i].clocks_in_khz / 1000,
>  				(clocks.data[i].clocks_in_khz / 1000 == now) ?
> "*" : "");
>  		break;
> @@ -2312,7 +2310,7 @@ static int vega12_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  				"Attempt to get dcef clk levels Failed!",
>  				return -1);
>  		for (i = 0; i < clocks.num_levels; i++)
> -			size += sysfs_emit_at(buf, size, "%d: %uMhz %s\n",
> +			size += sprintf(buf + size, "%d: %uMhz %s\n",
>  				i, clocks.data[i].clocks_in_khz / 1000,
>  				(clocks.data[i].clocks_in_khz / 1000 == now) ?
> "*" : "");
>  		break;
> diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_hwmgr.c
> b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_hwmgr.c
> index 03e63be4ee27..85d55ab4e369 100644
> --- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_hwmgr.c
> +++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_hwmgr.c
> @@ -3366,8 +3366,6 @@ static int vega20_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  	int ret = 0;
>  	uint32_t gen_speed, lane_width, current_gen_speed,
> current_lane_width;
> 
> -	phm_get_sysfs_buf(&buf, &size);
> -
>  	switch (type) {
>  	case PP_SCLK:
>  		ret = vega20_get_current_clk_freq(hwmgr, PPCLK_GFXCLK,
> &now); @@ -3376,13 +3374,13 @@ static int
> vega20_print_clock_levels(struct pp_hwmgr *hwmgr,
>  				return ret);
> 
>  		if (vega20_get_sclks(hwmgr, &clocks)) {
> -			size += sysfs_emit_at(buf, size, "0: %uMhz * (DPM
> disabled)\n",
> +			size += sprintf(buf + size, "0: %uMhz * (DPM
> disabled)\n",
>  				now / 100);
>  			break;
>  		}
> 
>  		for (i = 0; i < clocks.num_levels; i++)
> -			size += sysfs_emit_at(buf, size, "%d: %uMhz %s\n",
> +			size += sprintf(buf + size, "%d: %uMhz %s\n",
>  				i, clocks.data[i].clocks_in_khz / 1000,
>  				(clocks.data[i].clocks_in_khz == now * 10) ?
> "*" : "");
>  		break;
> @@ -3394,13 +3392,13 @@ static int vega20_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  				return ret);
> 
>  		if (vega20_get_memclocks(hwmgr, &clocks)) {
> -			size += sysfs_emit_at(buf, size, "0: %uMhz * (DPM
> disabled)\n",
> +			size += sprintf(buf + size, "0: %uMhz * (DPM
> disabled)\n",
>  				now / 100);
>  			break;
>  		}
> 
>  		for (i = 0; i < clocks.num_levels; i++)
> -			size += sysfs_emit_at(buf, size, "%d: %uMhz %s\n",
> +			size += sprintf(buf + size, "%d: %uMhz %s\n",
>  				i, clocks.data[i].clocks_in_khz / 1000,
>  				(clocks.data[i].clocks_in_khz == now * 10) ?
> "*" : "");
>  		break;
> @@ -3412,13 +3410,13 @@ static int vega20_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  				return ret);
> 
>  		if (vega20_get_socclocks(hwmgr, &clocks)) {
> -			size += sysfs_emit_at(buf, size, "0: %uMhz * (DPM
> disabled)\n",
> +			size += sprintf(buf + size, "0: %uMhz * (DPM
> disabled)\n",
>  				now / 100);
>  			break;
>  		}
> 
>  		for (i = 0; i < clocks.num_levels; i++)
> -			size += sysfs_emit_at(buf, size, "%d: %uMhz %s\n",
> +			size += sprintf(buf + size, "%d: %uMhz %s\n",
>  				i, clocks.data[i].clocks_in_khz / 1000,
>  				(clocks.data[i].clocks_in_khz == now * 10) ?
> "*" : "");
>  		break;
> @@ -3430,7 +3428,7 @@ static int vega20_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  				return ret);
> 
>  		for (i = 0; i < fclk_dpm_table->count; i++)
> -			size += sysfs_emit_at(buf, size, "%d: %uMhz %s\n",
> +			size += sprintf(buf + size, "%d: %uMhz %s\n",
>  				i, fclk_dpm_table->dpm_levels[i].value,
>  				fclk_dpm_table->dpm_levels[i].value ==
> (now / 100) ? "*" : "");
>  		break;
> @@ -3442,13 +3440,13 @@ static int vega20_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  				return ret);
> 
>  		if (vega20_get_dcefclocks(hwmgr, &clocks)) {
> -			size += sysfs_emit_at(buf, size, "0: %uMhz * (DPM
> disabled)\n",
> +			size += sprintf(buf + size, "0: %uMhz * (DPM
> disabled)\n",
>  				now / 100);
>  			break;
>  		}
> 
>  		for (i = 0; i < clocks.num_levels; i++)
> -			size += sysfs_emit_at(buf, size, "%d: %uMhz %s\n",
> +			size += sprintf(buf + size, "%d: %uMhz %s\n",
>  				i, clocks.data[i].clocks_in_khz / 1000,
>  				(clocks.data[i].clocks_in_khz == now * 10) ?
> "*" : "");
>  		break;
> @@ -3462,7 +3460,7 @@ static int vega20_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  			gen_speed = pptable->PcieGenSpeed[i];
>  			lane_width = pptable->PcieLaneCount[i];
> 
> -			size += sysfs_emit_at(buf, size,
> "%d: %s %s %dMhz %s\n", i,
> +			size += sprintf(buf + size, "%d: %s %s %dMhz %s\n", i,
>  					(gen_speed == 0) ? "2.5GT/s," :
>  					(gen_speed == 1) ? "5.0GT/s," :
>  					(gen_speed == 2) ? "8.0GT/s," :
> @@ -3483,18 +3481,18 @@ static int vega20_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  	case OD_SCLK:
>  		if (od8_settings[OD8_SETTING_GFXCLK_FMIN].feature_id
> &&
>  		    od8_settings[OD8_SETTING_GFXCLK_FMAX].feature_id) {
> -			size += sysfs_emit_at(buf, size, "%s:\n", "OD_SCLK");
> -			size += sysfs_emit_at(buf, size, "0: %10uMhz\n",
> +			size += sprintf(buf + size, "%s:\n", "OD_SCLK");
> +			size += sprintf(buf + size, "0: %10uMhz\n",
>  				od_table->GfxclkFmin);
> -			size += sysfs_emit_at(buf, size, "1: %10uMhz\n",
> +			size += sprintf(buf + size, "1: %10uMhz\n",
>  				od_table->GfxclkFmax);
>  		}
>  		break;
> 
>  	case OD_MCLK:
>  		if (od8_settings[OD8_SETTING_UCLK_FMAX].feature_id) {
> -			size += sysfs_emit_at(buf, size, "%s:\n",
> "OD_MCLK");
> -			size += sysfs_emit_at(buf, size, "1: %10uMhz\n",
> +			size += sprintf(buf + size, "%s:\n", "OD_MCLK");
> +			size += sprintf(buf + size, "1: %10uMhz\n",
>  				od_table->UclkFmax);
>  		}
> 
> @@ -3507,14 +3505,14 @@ static int vega20_print_clock_levels(struct
> pp_hwmgr *hwmgr,
> 
> od8_settings[OD8_SETTING_GFXCLK_VOLTAGE1].feature_id &&
> 
> od8_settings[OD8_SETTING_GFXCLK_VOLTAGE2].feature_id &&
> 
> od8_settings[OD8_SETTING_GFXCLK_VOLTAGE3].feature_id) {
> -			size += sysfs_emit_at(buf, size, "%s:\n",
> "OD_VDDC_CURVE");
> -			size += sysfs_emit_at(buf, size,
> "0: %10uMhz %10dmV\n",
> +			size += sprintf(buf + size, "%s:\n",
> "OD_VDDC_CURVE");
> +			size += sprintf(buf + size, "0: %10uMhz %10dmV\n",
>  				od_table->GfxclkFreq1,
>  				od_table->GfxclkVolt1 / VOLTAGE_SCALE);
> -			size += sysfs_emit_at(buf, size,
> "1: %10uMhz %10dmV\n",
> +			size += sprintf(buf + size, "1: %10uMhz %10dmV\n",
>  				od_table->GfxclkFreq2,
>  				od_table->GfxclkVolt2 / VOLTAGE_SCALE);
> -			size += sysfs_emit_at(buf, size,
> "2: %10uMhz %10dmV\n",
> +			size += sprintf(buf + size, "2: %10uMhz %10dmV\n",
>  				od_table->GfxclkFreq3,
>  				od_table->GfxclkVolt3 / VOLTAGE_SCALE);
>  		}
> @@ -3522,17 +3520,17 @@ static int vega20_print_clock_levels(struct
> pp_hwmgr *hwmgr,
>  		break;
> 
>  	case OD_RANGE:
> -		size += sysfs_emit_at(buf, size, "%s:\n", "OD_RANGE");
> +		size += sprintf(buf + size, "%s:\n", "OD_RANGE");
> 
>  		if (od8_settings[OD8_SETTING_GFXCLK_FMIN].feature_id
> &&
>  		    od8_settings[OD8_SETTING_GFXCLK_FMAX].feature_id) {
> -			size += sysfs_emit_at(buf, size,
> "SCLK: %7uMhz %10uMhz\n",
> +			size += sprintf(buf + size,
> "SCLK: %7uMhz %10uMhz\n",
> 
> 	od8_settings[OD8_SETTING_GFXCLK_FMIN].min_value,
> 
> 	od8_settings[OD8_SETTING_GFXCLK_FMAX].max_value);
>  		}
> 
>  		if (od8_settings[OD8_SETTING_UCLK_FMAX].feature_id) {
> -			size += sysfs_emit_at(buf, size,
> "MCLK: %7uMhz %10uMhz\n",
> +			size += sprintf(buf + size,
> "MCLK: %7uMhz %10uMhz\n",
> 
> 	od8_settings[OD8_SETTING_UCLK_FMAX].min_value,
> 
> 	od8_settings[OD8_SETTING_UCLK_FMAX].max_value);
>  		}
> @@ -3543,22 +3541,22 @@ static int vega20_print_clock_levels(struct
> pp_hwmgr *hwmgr,
> 
> od8_settings[OD8_SETTING_GFXCLK_VOLTAGE1].feature_id &&
> 
> od8_settings[OD8_SETTING_GFXCLK_VOLTAGE2].feature_id &&
> 
> od8_settings[OD8_SETTING_GFXCLK_VOLTAGE3].feature_id) {
> -			size += sysfs_emit_at(buf, size,
> "VDDC_CURVE_SCLK[0]: %7uMhz %10uMhz\n",
> +			size += sprintf(buf + size,
> "VDDC_CURVE_SCLK[0]: %7uMhz %10uMhz\n",
> 
> 	od8_settings[OD8_SETTING_GFXCLK_FREQ1].min_value,
> 
> 	od8_settings[OD8_SETTING_GFXCLK_FREQ1].max_value);
> -			size += sysfs_emit_at(buf, size,
> "VDDC_CURVE_VOLT[0]: %7dmV %11dmV\n",
> +			size += sprintf(buf + size,
> "VDDC_CURVE_VOLT[0]: %7dmV %11dmV\n",
> 
> 	od8_settings[OD8_SETTING_GFXCLK_VOLTAGE1].min_value,
> 
> 	od8_settings[OD8_SETTING_GFXCLK_VOLTAGE1].max_value);
> -			size += sysfs_emit_at(buf, size,
> "VDDC_CURVE_SCLK[1]: %7uMhz %10uMhz\n",
> +			size += sprintf(buf + size,
> "VDDC_CURVE_SCLK[1]: %7uMhz %10uMhz\n",
> 
> 	od8_settings[OD8_SETTING_GFXCLK_FREQ2].min_value,
> 
> 	od8_settings[OD8_SETTING_GFXCLK_FREQ2].max_value);
> -			size += sysfs_emit_at(buf, size,
> "VDDC_CURVE_VOLT[1]: %7dmV %11dmV\n",
> +			size += sprintf(buf + size,
> "VDDC_CURVE_VOLT[1]: %7dmV %11dmV\n",
> 
> 	od8_settings[OD8_SETTING_GFXCLK_VOLTAGE2].min_value,
> 
> 	od8_settings[OD8_SETTING_GFXCLK_VOLTAGE2].max_value);
> -			size += sysfs_emit_at(buf, size,
> "VDDC_CURVE_SCLK[2]: %7uMhz %10uMhz\n",
> +			size += sprintf(buf + size,
> "VDDC_CURVE_SCLK[2]: %7uMhz %10uMhz\n",
> 
> 	od8_settings[OD8_SETTING_GFXCLK_FREQ3].min_value,
> 
> 	od8_settings[OD8_SETTING_GFXCLK_FREQ3].max_value);
> -			size += sysfs_emit_at(buf, size,
> "VDDC_CURVE_VOLT[2]: %7dmV %11dmV\n",
> +			size += sprintf(buf + size,
> "VDDC_CURVE_VOLT[2]: %7dmV %11dmV\n",
> 
> 	od8_settings[OD8_SETTING_GFXCLK_VOLTAGE3].min_value,
> 
> 	od8_settings[OD8_SETTING_GFXCLK_VOLTAGE3].max_value);
>  		}
> --
> 2.31.1


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