Commit db7a6248 authored May 23, 2019 by Alan Mikhak Committed by Lorenzo Pieralisi Jun 11, 2019

PCI: endpoint: Set endpoint controller pointer to NULL



Set endpoint controller pointer to NULL in pci_epc_remove_epf()
to avoid -EBUSY on subsequent call to pci_epc_add_epf().

Add a check for NULL endpoint function pointer.

Signed-off-by: Alan Mikhak <alan.mikhak@sifive.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>

parent a188339c

drivers/pci/endpoint/pci-epc-core.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -519,11 +519,12 @@ void pci_epc_remove_epf(struct pci_epc epc, struct pci_epf epf)
		{
		unsigned long flags;

		if (!epc \|\| IS_ERR(epc))
		if (!epc \|\| IS_ERR(epc) \|\| !epf)
		return;

		spin_lock_irqsave(&epc->lock, flags);
		list_del(&epf->list);
		epf->epc = NULL;
		spin_unlock_irqrestore(&epc->lock, flags);
		}
		EXPORT_SYMBOL_GPL(pci_epc_remove_epf);

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