linux-kernel - [PATCH 2/3] firmware: qcom_scm: Always return devm_clk_get

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Message-Id: <20230623-topic-scm_cleanup-v1-2-383089eae98d@linaro.org>
Date:   Fri, 23 Jun 2023 23:49:43 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>
Cc:     Marijn Suijten <marijn.suijten@...ainline.org>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: [PATCH 2/3] firmware: qcom_scm: Always return
 devm_clk_get_optional errors

If devm_clk_get_optional throws an error, something is really wrong.
It may be a probe deferral, or it may be a problem with the clock
provider.

Regardless of what it may be, it should definitely not be ignored.
Stop doing that.

Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 drivers/firmware/qcom_scm.c | 18 ++++++------------
 1 file changed, 6 insertions(+), 12 deletions(-)

diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c
index dfa298347041..d7fc972b20ab 100644
--- a/drivers/firmware/qcom_scm.c
+++ b/drivers/firmware/qcom_scm.c
@@ -1422,22 +1422,16 @@ static int qcom_scm_probe(struct platform_device *pdev)
 				     "failed to acquire interconnect path\n");
 
 	scm->core_clk = devm_clk_get_optional(&pdev->dev, "core");
-	if (IS_ERR(scm->core_clk)) {
-		if (PTR_ERR(scm->core_clk) == -EPROBE_DEFER)
-			return PTR_ERR(scm->core_clk);
-	}
+	if (IS_ERR(scm->core_clk))
+		return PTR_ERR(scm->core_clk);
 
 	scm->iface_clk = devm_clk_get_optional(&pdev->dev, "iface");
-	if (IS_ERR(scm->iface_clk)) {
-		if (PTR_ERR(scm->iface_clk) == -EPROBE_DEFER)
-			return PTR_ERR(scm->iface_clk);
-	}
+	if (IS_ERR(scm->iface_clk))
+		return PTR_ERR(scm->iface_clk);
 
 	scm->bus_clk = devm_clk_get_optional(&pdev->dev, "bus");
-	if (IS_ERR(scm->bus_clk)) {
-		if (PTR_ERR(scm->bus_clk) == -EPROBE_DEFER)
-			return PTR_ERR(scm->bus_clk);
-	}
+	if (IS_ERR(scm->bus_clk))
+		return PTR_ERR(scm->bus_clk);
 
 	scm->reset.ops = &qcom_scm_pas_reset_ops;
 	scm->reset.nr_resets = 1;

-- 
2.41.0