Messages in this thread Patch in this message | | | From | Alan Mikhak <> | Subject | [PATCH v2] PCI: endpoint: Set endpoint controller pointer to null | Date | Thu, 23 May 2019 14:45:44 -0700 |
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Set endpoint controller pointer to null in pci_epc_remove_epf() to avoid -EBUSY on subsequent call to pci_epc_add_epf().
Requires checking for null endpoint function pointer.
Signed-off-by: Alan Mikhak <alan.mikhak@sifive.com> --- drivers/pci/endpoint/pci-epc-core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/pci/endpoint/pci-epc-core.c b/drivers/pci/endpoint/pci-epc-core.c index e4712a0f249c..2091508c1620 100644 --- a/drivers/pci/endpoint/pci-epc-core.c +++ b/drivers/pci/endpoint/pci-epc-core.c @@ -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); -- 2.7.4
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