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Message-Id: <1558647944-13816-1-git-send-email-alan.mikhak@sifive.com>
Date: Thu, 23 May 2019 14:45:44 -0700
From: Alan Mikhak <alan.mikhak@...ive.com>
To: linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
kishon@...com, lorenzo.pieralisi@....com,
linux-riscv@...ts.infradead.org, palmer@...ive.com,
paul.walmsley@...ive.com
Cc: Alan Mikhak <alan.mikhak@...ive.com>
Subject: [PATCH v2] 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().
Requires checking for null endpoint function pointer.
Signed-off-by: Alan Mikhak <alan.mikhak@...ive.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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