From: zhengbin <zhengbi...@huawei.com>

[ Upstream commit ac52caecbcf2c30ce95b2536c1caf2643c49b91c ]

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/gpu/drm/radeon/si_dpm.c: In function si_program_response_times:
drivers/gpu/drm/radeon/si_dpm.c:3640:29: warning: variable 
backbias_response_time set but not used [-Wunused-but-set-variable]

It is introduced by commit a9e61410921b ("drm/radeon/kms:
add dpm support for SI (v7)"), but never used, so remove it.

Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: zhengbin <zhengbi...@huawei.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/gpu/drm/radeon/si_dpm.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
index a0b382a637a64..8148a7883de43 100644
--- a/drivers/gpu/drm/radeon/si_dpm.c
+++ b/drivers/gpu/drm/radeon/si_dpm.c
@@ -3640,14 +3640,13 @@ static int si_notify_smc_display_change(struct 
radeon_device *rdev,
 
 static void si_program_response_times(struct radeon_device *rdev)
 {
-       u32 voltage_response_time, backbias_response_time, acpi_delay_time, 
vbi_time_out;
+       u32 voltage_response_time, acpi_delay_time, vbi_time_out;
        u32 vddc_dly, acpi_dly, vbi_dly;
        u32 reference_clock;
 
        si_write_smc_soft_register(rdev, SI_SMC_SOFT_REGISTER_mvdd_chg_time, 1);
 
        voltage_response_time = (u32)rdev->pm.dpm.voltage_response_time;
-       backbias_response_time = (u32)rdev->pm.dpm.backbias_response_time;
 
        if (voltage_response_time == 0)
                voltage_response_time = 1000;
-- 
2.20.1

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