diff mbox series

Set endpoint controller pointer to null

Message ID 1556208724-2086-1-git-send-email-amikhak@wirelessfabric.com
State Superseded
Delegated to: Lorenzo Pieralisi
Headers show
Series Set endpoint controller pointer to null | expand

Commit Message

Alan Mikhak April 25, 2019, 4:12 p.m. UTC 
From: Alan Mikhak <amikhak@wirelessfabric.com>

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

Also check for null endpoint function pointer.

Signed-off-by: Alan Mikhak <amikhak@wirelessfabric.com>
---
 drivers/pci/endpoint/pci-epc-core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/pci/endpoint/pci-epc-core.c b/drivers/pci/endpoint/pci-epc-core.c
index e4712a0..2091508 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);