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PCI: endpoint: Simplify pci_epc_get()

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Simplify pci_epc_get() implementation by using class_find_device_by_name().

Link: https://lore.kernel.org/r/20241210-pci-epc-core_fix-v3-2-4d86dd573e4b@quicinc.com
Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
This commit is contained in:
Zijun Hu
2024-12-10 22:00:19 +08:00
committed by Bjorn Helgaas
parent d4929755e4
commit e0be8511ff
1 changed files with 6 additions and 15 deletions
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drivers/pci/endpoint/pci-epc-core.c
+6 -15
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@@ -60,26 +60,17 @@ struct pci_epc *pci_epc_get(const char *epc_name)
int ret = -EINVAL;
struct pci_epc *epc;
struct device *dev;
struct class_dev_iter iter;
class_dev_iter_init(&iter, &pci_epc_class, NULL, NULL);
while ((dev = class_dev_iter_next(&iter))) {
if (strcmp(epc_name, dev_name(dev)))
continue;
dev = class_find_device_by_name(&pci_epc_class, epc_name);
if (!dev)
goto err;
epc = to_pci_epc(dev);
if (!try_module_get(epc->ops->owner)) {
ret = -EINVAL;
goto err;
}
class_dev_iter_exit(&iter);
get_device(&epc->dev);
epc = to_pci_epc(dev);
if (try_module_get(epc->ops->owner))
return epc;
}
err:
class_dev_iter_exit(&iter);
put_device(dev);
return ERR_PTR(ret);
}
EXPORT_SYMBOL_GPL(pci_epc_get);