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From:   Johan Hovold <johan+linaro@kernel.org>
To:     Bjorn Andersson <andersson@kernel.org>
Cc:     Andy Gross <agross@kernel.org>,
        Konrad Dybcio <konrad.dybcio@linaro.org>,
        Michael Turquette <mturquette@baylibre.com>,
        Stephen Boyd <sboyd@kernel.org>, linux-arm-msm@vger.kernel.org,
        linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org,
        Johan Hovold <johan+linaro@kernel.org>, stable@vger.kernel.org,
        Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Subject: [PATCH 2/8] clk: qcom: dispcc-sm8450: fix runtime PM imbalance on probe errors
Date:   Tue, 18 Jul 2023 15:28:56 +0200
Message-ID: <20230718132902.21430-3-johan+linaro@kernel.org>
In-Reply-To: <20230718132902.21430-1-johan+linaro@kernel.org>
References: <20230718132902.21430-1-johan+linaro@kernel.org>
MIME-Version: 1.0
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Make sure to decrement the runtime PM usage count before returning in
case regmap initialisation fails.

Fixes: 16fb89f92ec4 ("clk: qcom: Add support for Display Clock Controller on SM8450")
Cc: stable@vger.kernel.org      # 6.1
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/clk/qcom/dispcc-sm8450.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/qcom/dispcc-sm8450.c b/drivers/clk/qcom/dispcc-sm8450.c
index adbfd30bfc96..84db4ff5485a 100644
--- a/drivers/clk/qcom/dispcc-sm8450.c
+++ b/drivers/clk/qcom/dispcc-sm8450.c
@@ -1776,8 +1776,10 @@ static int disp_cc_sm8450_probe(struct platform_device *pdev)
 		return ret;
 
 	regmap = qcom_cc_map(pdev, &disp_cc_sm8450_desc);
-	if (IS_ERR(regmap))
-		return PTR_ERR(regmap);
+	if (IS_ERR(regmap)) {
+		ret = PTR_ERR(regmap);
+		goto err_put_rpm;
+	}
 
 	clk_lucid_evo_pll_configure(&disp_cc_pll0, regmap, &disp_cc_pll0_config);
 	clk_lucid_evo_pll_configure(&disp_cc_pll1, regmap, &disp_cc_pll1_config);
@@ -1792,9 +1794,16 @@ static int disp_cc_sm8450_probe(struct platform_device *pdev)
 	regmap_update_bits(regmap, 0xe05c, BIT(0), BIT(0));
 
 	ret = qcom_cc_really_probe(pdev, &disp_cc_sm8450_desc, regmap);
+	if (ret)
+		goto err_put_rpm;
 
 	pm_runtime_put(&pdev->dev);
 
+	return 0;
+
+err_put_rpm:
+	pm_runtime_put_sync(&pdev->dev);
+
 	return ret;
 }
 
-- 
2.41.0