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From:   Brian Norris <briannorris@chromium.org>
To:     =?UTF-8?q?Heiko=20St=C3=BCbner?= <heiko@sntech.de>
Cc:     linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
        linux-rockchip@lists.infradead.org,
        Sandy Huang <hjc@rock-chips.com>,
        Chen-Yu Tsai <wenst@chromium.org>,
        Thomas Hebb <tommyhebb@gmail.com>,
        Brian Norris <briannorris@chromium.org>
Subject: [PATCH v3 4/4] drm/rockchip: dsi: Disable PLL clock on bind error
Date:   Tue, 28 Sep 2021 14:35:52 -0700
Message-Id: <20210928143413.v3.4.I8bb7a91ecc411d56bc155763faa15f289d7fc074@changeid>
In-Reply-To: <20210928213552.1001939-1-briannorris@chromium.org>
References: <20210928213552.1001939-1-briannorris@chromium.org>
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Fix some error handling here noticed in review of other changes.

Fixes: 2d4f7bdafd70 ("drm/rockchip: dsi: migrate to use dw-mipi-dsi bridge driver")
Signed-off-by: Brian Norris <briannorris@chromium.org>
Reported-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
---

Changes in v3:
- Add Fixes, Reviewed-by

Changes in v2:
- New

 drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
index 8ea852880d1c..59c3d8ef6bf9 100644
--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
@@ -945,7 +945,7 @@ static int dw_mipi_dsi_rockchip_bind(struct device *dev,
 	ret = clk_prepare_enable(dsi->grf_clk);
 	if (ret) {
 		DRM_DEV_ERROR(dsi->dev, "Failed to enable grf_clk: %d\n", ret);
-		goto out_pm_runtime;
+		goto out_pll_clk;
 	}
 
 	dw_mipi_dsi_rockchip_config(dsi);
@@ -957,19 +957,21 @@ static int dw_mipi_dsi_rockchip_bind(struct device *dev,
 	ret = rockchip_dsi_drm_create_encoder(dsi, drm_dev);
 	if (ret) {
 		DRM_DEV_ERROR(dev, "Failed to create drm encoder\n");
-		goto out_pm_runtime;
+		goto out_pll_clk;
 	}
 
 	ret = dw_mipi_dsi_bind(dsi->dmd, &dsi->encoder);
 	if (ret) {
 		DRM_DEV_ERROR(dev, "Failed to bind: %d\n", ret);
-		goto out_pm_runtime;
+		goto out_pll_clk;
 	}
 
 	dsi->dsi_bound = true;
 
 	return 0;
 
+out_pll_clk:
+	clk_disable_unprepare(dsi->pllref_clk);
 out_pm_runtime:
 	pm_runtime_put(dsi->dev);
 	if (dsi->slave)
-- 
2.33.0.685.g46640cef36-goog