linux-kernel - [PATCH 17/20] phy: qcom-qmp-pcie: add config sanity checks

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Date:   Wed, 12 Oct 2022 10:49:59 +0200
From:   Johan Hovold <johan+linaro@...nel.org>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Kishon Vijay Abraham I <kishon@...com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Johan Hovold <johan+linaro@...nel.org>
Subject: [PATCH 17/20] phy: qcom-qmp-pcie: add config sanity checks

The driver expects every configuration to set the pwrdn_ctrl and
phy_status masks. Add some probe WARN_ON_ONCE() to probe to catch any
new driver support that fails to provide them.

Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-pcie.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
index 5534a4ad0243..7c81667dd968 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
@@ -2347,6 +2347,9 @@ static int qmp_pcie_probe(struct platform_device *pdev)
 	if (!cfg)
 		return -EINVAL;
 
+	WARN_ON_ONCE(!cfg->pwrdn_ctrl);
+	WARN_ON_ONCE(!cfg->phy_status);
+
 	serdes = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(serdes))
 		return PTR_ERR(serdes);
-- 
2.35.1