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| author | DENG Qingfang <dengqf6@mail2.sysu.edu.cn> | 2020-03-11 21:05:41 +0800 |
|---|---|---|
| committer | Chuanhong Guo <gch981213@gmail.com> | 2020-04-04 14:14:43 +0800 |
| commit | d21d6ea4547412632e01de505b7a2c8a83817a02 (patch) | |
| tree | aa14fe99c40732d9af6ad331e3e003caa59cd6a9 /target/linux/ramips/patches-5.4/0104-staging-mt7621-pci-release-gpios-after-pci-initializ.patch | |
| parent | 66984646c2d6f2e868657d3a83fa5038d5b94487 (diff) | |
| download | upstream-d21d6ea4547412632e01de505b7a2c8a83817a02.tar.gz upstream-d21d6ea4547412632e01de505b7a2c8a83817a02.tar.bz2 upstream-d21d6ea4547412632e01de505b7a2c8a83817a02.zip | |
ramips: mt7621: backport PCIe driver fixes from staging-test
Backport mt7621-pci/mt7621-pci-phy fixes from staging-test
Signed-off-by: DENG Qingfang <dengqf6@mail2.sysu.edu.cn>
Diffstat (limited to 'target/linux/ramips/patches-5.4/0104-staging-mt7621-pci-release-gpios-after-pci-initializ.patch')
| -rw-r--r-- | target/linux/ramips/patches-5.4/0104-staging-mt7621-pci-release-gpios-after-pci-initializ.patch | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/target/linux/ramips/patches-5.4/0104-staging-mt7621-pci-release-gpios-after-pci-initializ.patch b/target/linux/ramips/patches-5.4/0104-staging-mt7621-pci-release-gpios-after-pci-initializ.patch new file mode 100644 index 0000000000..f24bf833c9 --- /dev/null +++ b/target/linux/ramips/patches-5.4/0104-staging-mt7621-pci-release-gpios-after-pci-initializ.patch @@ -0,0 +1,76 @@ +From 4d6a758f2cd2122a7d895f913854c13da62ba6df Mon Sep 17 00:00:00 2001 +From: Sergio Paracuellos <sergio.paracuellos@gmail.com> +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 <sergio.paracuellos@gmail.com> +Link: https://lore.kernel.org/r/20200313200913.24321-6-sergio.paracuellos@gmail.com +Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> +--- + drivers/staging/mt7621-pci/pci-mt7621.c | 23 ++++++++++++++++++----- + 1 file changed, 18 insertions(+), 5 deletions(-) + +--- 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_deasser + 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 platf + 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 platf + 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 platf + 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[] = { |