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| author | Pali Rohár <pali@kernel.org> | 2021-11-25 13:45:52 +0100 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2022-01-04 14:58:26 +0000 |
| commit | 5d18d702e5c9309f4195653475c7a7fdde4ca71f (patch) | |
| tree | 15ebda590d6e968eca00d2ea2c924820cf7eeab6 /drivers/pci | |
| parent | 8cdabfdd5a22ded53ab18f50df48e04dba744ad4 (diff) | |
| download | linux-stable-5d18d702e5c9309f4195653475c7a7fdde4ca71f.tar.gz linux-stable-5d18d702e5c9309f4195653475c7a7fdde4ca71f.tar.bz2 linux-stable-5d18d702e5c9309f4195653475c7a7fdde4ca71f.zip | |
PCI: mvebu: Check for errors from pci_bridge_emul_init() call
Function pci_bridge_emul_init() may fail so correctly check for errors.
Link: https://lore.kernel.org/r/20211125124605.25915-3-pali@kernel.org
Fixes: 1f08673eef12 ("PCI: mvebu: Convert to PCI emulated bridge config space")
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/controller/pci-mvebu.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/pci/controller/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c index 51cf3ecb4121..e4424db808fe 100644 --- a/drivers/pci/controller/pci-mvebu.c +++ b/drivers/pci/controller/pci-mvebu.c @@ -570,7 +570,7 @@ static struct pci_bridge_emul_ops mvebu_pci_bridge_emul_ops = { * Initialize the configuration space of the PCI-to-PCI bridge * associated with the given PCIe interface. */ -static void mvebu_pci_bridge_emul_init(struct mvebu_pcie_port *port) +static int mvebu_pci_bridge_emul_init(struct mvebu_pcie_port *port) { struct pci_bridge_emul *bridge = &port->bridge; @@ -589,7 +589,7 @@ static void mvebu_pci_bridge_emul_init(struct mvebu_pcie_port *port) bridge->data = port; bridge->ops = &mvebu_pci_bridge_emul_ops; - pci_bridge_emul_init(bridge, PCI_BRIDGE_EMUL_NO_PREFETCHABLE_BAR); + return pci_bridge_emul_init(bridge, PCI_BRIDGE_EMUL_NO_PREFETCHABLE_BAR); } static inline struct mvebu_pcie *sys_to_pcie(struct pci_sys_data *sys) @@ -1075,9 +1075,18 @@ static int mvebu_pcie_probe(struct platform_device *pdev) continue; } + ret = mvebu_pci_bridge_emul_init(port); + if (ret < 0) { + dev_err(dev, "%s: cannot init emulated bridge\n", + port->name); + devm_iounmap(dev, port->base); + port->base = NULL; + mvebu_pcie_powerdown(port); + continue; + } + mvebu_pcie_setup_hw(port); mvebu_pcie_set_local_dev_nr(port, 1); - mvebu_pci_bridge_emul_init(port); } pcie->nports = i; |