From: Tim Huang Date: Thu, 1 Aug 2024 06:04:52 +0000 (+0800) Subject: drm/amdgpu: check return for setting engine dram timings X-Git-Tag: v6.13-rc1~122^2~15^2~259 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=381ec8161d5fab5395043215d9e3522cbddf6ccd;p=thirdparty%2Fkernel%2Fstable.git drm/amdgpu: check return for setting engine dram timings This resolves the unchecded return value warning reported by Coverity. Signed-off-by: Tim Huang Reviewed-by: Jesse Zhang Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c index 0c8975ac5af9e..093141ad6ed01 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c @@ -1145,8 +1145,8 @@ int amdgpu_atombios_get_memory_pll_dividers(struct amdgpu_device *adev, return 0; } -void amdgpu_atombios_set_engine_dram_timings(struct amdgpu_device *adev, - u32 eng_clock, u32 mem_clock) +int amdgpu_atombios_set_engine_dram_timings(struct amdgpu_device *adev, + u32 eng_clock, u32 mem_clock) { SET_ENGINE_CLOCK_PS_ALLOCATION args; int index = GetIndexIntoMasterTable(COMMAND, DynamicMemorySettings); @@ -1161,8 +1161,8 @@ void amdgpu_atombios_set_engine_dram_timings(struct amdgpu_device *adev, if (mem_clock) args.sReserved.ulClock = cpu_to_le32(mem_clock & SET_CLOCK_FREQ_MASK); - amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args, - sizeof(args)); + return amdgpu_atom_execute_table(adev->mode_info.atom_context, index, + (uint32_t *)&args, sizeof(args)); } void amdgpu_atombios_get_default_voltages(struct amdgpu_device *adev, diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.h index 0811474e8fd33..0e16432d9a725 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.h @@ -163,8 +163,8 @@ int amdgpu_atombios_get_memory_pll_dividers(struct amdgpu_device *adev, bool strobe_mode, struct atom_mpll_param *mpll_param); -void amdgpu_atombios_set_engine_dram_timings(struct amdgpu_device *adev, - u32 eng_clock, u32 mem_clock); +int amdgpu_atombios_set_engine_dram_timings(struct amdgpu_device *adev, + u32 eng_clock, u32 mem_clock); bool amdgpu_atombios_is_voltage_gpio(struct amdgpu_device *adev, diff --git a/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c b/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c index a1baa13ab2c26..43028e776c932 100644 --- a/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c +++ b/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c @@ -4755,13 +4755,15 @@ static int si_populate_memory_timing_parameters(struct amdgpu_device *adev, u32 dram_timing; u32 dram_timing2; u32 burst_time; + int ret; arb_regs->mc_arb_rfsh_rate = (u8)si_calculate_memory_refresh_rate(adev, pl->sclk); - amdgpu_atombios_set_engine_dram_timings(adev, - pl->sclk, - pl->mclk); + ret = amdgpu_atombios_set_engine_dram_timings(adev, pl->sclk, + pl->mclk); + if (ret) + return ret; dram_timing = RREG32(MC_ARB_DRAM_TIMING); dram_timing2 = RREG32(MC_ARB_DRAM_TIMING2);