[PATCH] PCI: j721e: In j721e_pcie_suspend_noirq() check reset_gpio before to use it
From: Thomas Richard <thomas.richard@bootlin.com>
Date: 2024-12-09 11:23:30
Also in:
linux-omap, linux-pci, lkml
Subsystem:
pci driver for cadence pcie ip, pci driver for ti dra7xx/j721e, pci native host bridge and endpoint drivers, pci subsystem, the rest · Maintainers:
Vignesh Raghavendra, Lorenzo Pieralisi, Krzysztof Wilczyński, Manivannan Sadhasivam, Bjorn Helgaas, Linus Torvalds
The reset_gpio is optional, so in j721e_pcie_suspend_noirq() check if it is
not NULL before to use it.
Fixes: c538d40f365b ("PCI: j721e: Add suspend and resume support")
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
---
drivers/pci/controller/cadence/pci-j721e.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/pci/controller/cadence/pci-j721e.c b/drivers/pci/controller/cadence/pci-j721e.c
index 0341d51d6aed..5bc14dd70811 100644
--- a/drivers/pci/controller/cadence/pci-j721e.c
+++ b/drivers/pci/controller/cadence/pci-j721e.c@@ -644,7 +644,9 @@ static int j721e_pcie_suspend_noirq(struct device *dev) struct j721e_pcie *pcie = dev_get_drvdata(dev); if (pcie->mode == PCI_MODE_RC) { - gpiod_set_value_cansleep(pcie->reset_gpio, 0); + if (pcie->reset_gpio) + gpiod_set_value_cansleep(pcie->reset_gpio, 0); + clk_disable_unprepare(pcie->refclk); }
--
2.39.5