From adfeee9b871a2ed26673c24ada23c13e11a21505 Mon Sep 17 00:00:00 2001 From: Sergio Paracuellos Date: Fri, 13 Mar 2020 21:09:12 +0100 Subject: [PATCH] staging: mt7621-pci: release gpios after pci initialization R3G's LEDs fail to initialize because one of them uses GPIO8 Hence, release the GPIO resources after PCIe initialization and properly release also in driver error path. Signed-off-by: Sergio Paracuellos Link: https://lore.kernel.org/r/20200313200913.24321-6-sergio.paracuellos@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/staging/mt7621-pci/pci-mt7621.c | 23 ++++++++++++++++++----- 1 file changed, 18 insertions(+), 5 deletions(-) diff --git a/drivers/staging/mt7621-pci/pci-mt7621.c b/drivers/staging/mt7621-pci/pci-mt7621.c index 3d85ce788f9f..0d9dd14f6bec 100644 --- a/drivers/staging/mt7621-pci/pci-mt7621.c +++ b/drivers/staging/mt7621-pci/pci-mt7621.c @@ -484,6 +484,15 @@ static void mt7621_pcie_reset_ep_deassert(struct mt7621_pcie *pcie) mdelay(PERST_DELAY_MS); } +static void mt7621_pcie_release_gpios(struct mt7621_pcie *pcie) +{ + struct mt7621_pcie_port *port; + + list_for_each_entry(port, &pcie->ports, list) + if (port->gpio_rst) + gpiod_put(port->gpio_rst); +} + static void mt7621_pcie_init_ports(struct mt7621_pcie *pcie) { struct device *dev = pcie->dev; @@ -683,7 +692,8 @@ static int mt7621_pci_probe(struct platform_device *pdev) err = mt7621_pcie_init_virtual_bridges(pcie); if (err) { dev_err(dev, "Nothing is connected in virtual bridges. Exiting..."); - return 0; + err = 0; + goto out_release_gpios; } mt7621_pcie_enable_ports(pcie); @@ -691,7 +701,7 @@ static int mt7621_pci_probe(struct platform_device *pdev) err = mt7621_pci_parse_request_of_pci_ranges(pcie); if (err) { dev_err(dev, "Error requesting pci resources from ranges"); - return err; + goto out_release_gpios; } setup_cm_memory_region(pcie); @@ -699,16 +709,19 @@ static int mt7621_pci_probe(struct platform_device *pdev) err = mt7621_pcie_request_resources(pcie, &res); if (err) { dev_err(dev, "Error requesting resources\n"); - return err; + goto out_release_gpios; } err = mt7621_pcie_register_host(bridge, &res); if (err) { dev_err(dev, "Error registering host\n"); - return err; + goto out_release_gpios; } - return 0; +out_release_gpios: + mt7621_pcie_release_gpios(pcie); + + return err; } static const struct of_device_id mt7621_pci_ids[] = {