From 68d82161fdab51f44767bcde801fd6a58bef9548 Mon Sep 17 00:00:00 2001 From: Alexandre Courbot Date: Tue, 13 Dec 2016 17:11:23 +0900 Subject: [PATCH] drm/nouveau/pmu/gk20a: simplify code a bit Some functions always succeed - change their return type to void and remove the error-handling code in their caller. Signed-off-by: Alexandre Courbot Signed-off-by: Ben Skeggs --- .../gpu/drm/nouveau/nvkm/subdev/pmu/gk20a.c | 30 +++++-------------- 1 file changed, 8 insertions(+), 22 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gk20a.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gk20a.c index e897bbde44f2..4a0f80983564 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gk20a.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gk20a.c @@ -43,9 +43,8 @@ struct gk20a_pmu { }; struct gk20a_pmu_dvfs_dev_status { - unsigned long total; - unsigned long busy; - int cur_state; + u32 total; + u32 busy; }; static int @@ -56,13 +55,12 @@ gk20a_pmu_dvfs_target(struct gk20a_pmu *pmu, int *state) return nvkm_clk_astate(clk, *state, 0, false); } -static int +static void gk20a_pmu_dvfs_get_cur_state(struct gk20a_pmu *pmu, int *state) { struct nvkm_clk *clk = pmu->base.subdev.device->clk; *state = clk->pstate; - return 0; } static int @@ -90,20 +88,16 @@ gk20a_pmu_dvfs_get_target_state(struct gk20a_pmu *pmu, *state = level; - if (level == cur_level) - return 0; - else - return 1; + return (level != cur_level); } -static int +static void gk20a_pmu_dvfs_get_dev_status(struct gk20a_pmu *pmu, struct gk20a_pmu_dvfs_dev_status *status) { struct nvkm_device *device = pmu->base.subdev.device; status->busy = nvkm_rd32(device, 0x10a508 + (BUSY_SLOT * 0x10)); status->total= nvkm_rd32(device, 0x10a508 + (CLK_SLOT * 0x10)); - return 0; } static void @@ -127,7 +121,7 @@ gk20a_pmu_dvfs_work(struct nvkm_alarm *alarm) struct nvkm_timer *tmr = device->timer; struct nvkm_volt *volt = device->volt; u32 utilization = 0; - int state, ret; + int state; /* * The PMU is initialized before CLK and VOLT, so we have to make sure the @@ -136,11 +130,7 @@ gk20a_pmu_dvfs_work(struct nvkm_alarm *alarm) if (!clk || !volt) goto resched; - ret = gk20a_pmu_dvfs_get_dev_status(pmu, &status); - if (ret) { - nvkm_warn(subdev, "failed to get device status\n"); - goto resched; - } + gk20a_pmu_dvfs_get_dev_status(pmu, &status); if (status.total) utilization = div_u64((u64)status.busy * 100, status.total); @@ -150,11 +140,7 @@ gk20a_pmu_dvfs_work(struct nvkm_alarm *alarm) nvkm_trace(subdev, "utilization = %d %%, avg_load = %d %%\n", utilization, data->avg_load); - ret = gk20a_pmu_dvfs_get_cur_state(pmu, &state); - if (ret) { - nvkm_warn(subdev, "failed to get current state\n"); - goto resched; - } + gk20a_pmu_dvfs_get_cur_state(pmu, &state); if (gk20a_pmu_dvfs_get_target_state(pmu, &state, data->avg_load)) { nvkm_trace(subdev, "set new state to %d\n", state); -- 2.20.1