linux-kernel - [PATCH v4 1/6] PCI: brcmstb: Check return value of clk_prepare

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Date:   Thu,  1 Apr 2021 17:21:41 -0400
From:   Jim Quinlan <jim2101024@...il.com>
To:     linux-pci@...r.kernel.org,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Rob Herring <robh@...nel.org>, Mark Brown <broonie@...nel.org>,
        bcm-kernel-feedback-list@...adcom.com, jim2101024@...il.com,
        james.quinlan@...adcom.com
Cc:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Jim Quinlan <jquinlan@...adcom.com>,
        linux-rpi-kernel@...ts.infradead.org (moderated list:BROADCOM
        BCM2711/BCM2835 ARM ARCHITECTURE),
        linux-arm-kernel@...ts.infradead.org (moderated list:BROADCOM
        BCM2711/BCM2835 ARM ARCHITECTURE),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v4 1/6] PCI: brcmstb: Check return value of clk_prepare_enable()

Check for failure of clk_prepare_enable() on device resume.

Signed-off-by: Jim Quinlan <jim2101024@...il.com>
Acked-by: Florian Fainelli <f.fainelli@...il.com>
Fixes: 8195b7417018 ("PCI: brcmstb: Add suspend and resume pm_ops")
---
 drivers/pci/controller/pcie-brcmstb.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c
index e330e6811f0b..4ce1f3a60574 100644
--- a/drivers/pci/controller/pcie-brcmstb.c
+++ b/drivers/pci/controller/pcie-brcmstb.c
@@ -1161,7 +1161,9 @@ static int brcm_pcie_resume(struct device *dev)
 	int ret;
 
 	base = pcie->base;
-	clk_prepare_enable(pcie->clk);
+	ret = clk_prepare_enable(pcie->clk);
+	if (ret)
+		return ret;
 
 	ret = brcm_phy_start(pcie);
 	if (ret)
-- 
2.17.1