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PCI: dwc: Simplify config resource lookup

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If platform_get_resource_byname("config") fails, return error immediately
and unindent the normal path.  No functional change intended.

Link: https://lore.kernel.org/r/20250117235119.712043-1-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
This commit is contained in:
Bjorn Helgaas 2025-01-17 17:51:19 -06:00
parent 4dbf0155df
commit 1108d677da
1 changed files with 9 additions and 9 deletions
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18
drivers/pci/controller/dwc/pcie-designware-host.c
View File

@ -436,18 +436,18 @@ int dw_pcie_host_init(struct dw_pcie_rp *pp)
return ret;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "config");
if (res) {
pp->cfg0_size = resource_size(res);
pp->cfg0_base = res->start;
pp->va_cfg0_base = devm_pci_remap_cfg_resource(dev, res);
if (IS_ERR(pp->va_cfg0_base))
return PTR_ERR(pp->va_cfg0_base);
} else {
dev_err(dev, "Missing *config* reg space\n");
if (!res) {
dev_err(dev, "Missing \"config\" reg space\n");
return -ENODEV;
}
pp->cfg0_size = resource_size(res);
pp->cfg0_base = res->start;
pp->va_cfg0_base = devm_pci_remap_cfg_resource(dev, res);
if (IS_ERR(pp->va_cfg0_base))
return PTR_ERR(pp->va_cfg0_base);
bridge = devm_pci_alloc_host_bridge(dev, 0);
if (!bridge)
return -ENOMEM;