[PATCH 5.10 451/663] PCI: rockchip: Make ep-gpios DT property optional
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-03-02 00:03:48
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Subsystem:
arm/rockchip soc support, pci native host bridge and endpoint drivers, pci subsystem, pcie driver for rockchip, the rest · Maintainers:
Heiko Stuebner, Lorenzo Pieralisi, Krzysztof Wilczyński, Manivannan Sadhasivam, Bjorn Helgaas, Shawn Lin, Linus Torvalds
From: Chen-Yu Tsai <redacted> [ Upstream commit 58adbfb3ebec460e8b58875c682bafd866808e80 ] The Rockchip PCIe controller DT binding clearly states that 'ep-gpios' is an optional property. And indeed there are boards that don't require it. Make the driver follow the binding by using devm_gpiod_get_optional() instead of devm_gpiod_get(). [bhelgaas: tidy whitespace] Link: https://lore.kernel.org/r/20210121162321.4538-2-wens@kernel.org (local) Fixes: e77f847df54c ("PCI: rockchip: Add Rockchip PCIe controller support") Fixes: 956cd99b35a8 ("PCI: rockchip: Separate common code from RC driver") Fixes: 964bac9455be ("PCI: rockchip: Split out rockchip_pcie_parse_dt() to parse DT") Signed-off-by: Chen-Yu Tsai <redacted> Signed-off-by: Lorenzo Pieralisi <redacted> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/pci/controller/pcie-rockchip.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/pci/controller/pcie-rockchip.c b/drivers/pci/controller/pcie-rockchip.c
index 904dec0d3a88f..990a00e08bc5b 100644
--- a/drivers/pci/controller/pcie-rockchip.c
+++ b/drivers/pci/controller/pcie-rockchip.c@@ -82,7 +82,7 @@ int rockchip_pcie_parse_dt(struct rockchip_pcie *rockchip) } rockchip->mgmt_sticky_rst = devm_reset_control_get_exclusive(dev, - "mgmt-sticky"); + "mgmt-sticky"); if (IS_ERR(rockchip->mgmt_sticky_rst)) { if (PTR_ERR(rockchip->mgmt_sticky_rst) != -EPROBE_DEFER) dev_err(dev, "missing mgmt-sticky reset property in node\n");
@@ -118,11 +118,11 @@ int rockchip_pcie_parse_dt(struct rockchip_pcie *rockchip) } if (rockchip->is_rc) { - rockchip->ep_gpio = devm_gpiod_get(dev, "ep", GPIOD_OUT_HIGH); - if (IS_ERR(rockchip->ep_gpio)) { - dev_err(dev, "missing ep-gpios property in node\n"); - return PTR_ERR(rockchip->ep_gpio); - } + rockchip->ep_gpio = devm_gpiod_get_optional(dev, "ep", + GPIOD_OUT_HIGH); + if (IS_ERR(rockchip->ep_gpio)) + return dev_err_probe(dev, PTR_ERR(rockchip->ep_gpio), + "failed to get ep GPIO\n"); } rockchip->aclk_pcie = devm_clk_get(dev, "aclk");
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2.27.0