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drm/nouveau/tegra: remove needless NULL check

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There has already been NULL check in clk_prepare_enable() and
clk_disable_unprepare(), so remove needless NULL check before
calling them.

Signed-off-by: Guo Zhengkui <guozhengkui@vivo.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220519072950.128268-1-guozhengkui@vivo.com
This commit is contained in:
Guo Zhengkui 2022-05-19 15:29:48 +08:00 committed by Lyude Paul
parent e4f21d1436
commit 1a3b1ea111
1 changed files with 5 additions and 9 deletions
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14
drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c
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@ -41,11 +41,9 @@ nvkm_device_tegra_power_up(struct nvkm_device_tegra *tdev)
ret = clk_prepare_enable(tdev->clk);
if (ret)
goto err_clk;
if (tdev->clk_ref) {
ret = clk_prepare_enable(tdev->clk_ref);
if (ret)
goto err_clk_ref;
}
ret = clk_prepare_enable(tdev->clk_ref);
if (ret)
goto err_clk_ref;
ret = clk_prepare_enable(tdev->clk_pwr);
if (ret)
goto err_clk_pwr;
@ -70,8 +68,7 @@ nvkm_device_tegra_power_up(struct nvkm_device_tegra *tdev)
err_clamp:
clk_disable_unprepare(tdev->clk_pwr);
err_clk_pwr:
if (tdev->clk_ref)
clk_disable_unprepare(tdev->clk_ref);
clk_disable_unprepare(tdev->clk_ref);
err_clk_ref:
clk_disable_unprepare(tdev->clk);
err_clk:
@ -87,8 +84,7 @@ nvkm_device_tegra_power_down(struct nvkm_device_tegra *tdev)
int ret;
clk_disable_unprepare(tdev->clk_pwr);
if (tdev->clk_ref)
clk_disable_unprepare(tdev->clk_ref);
clk_disable_unprepare(tdev->clk_ref);
clk_disable_unprepare(tdev->clk);
udelay(10);