From: Alan Mikhak <alan.mikhak@sifive.com>
To: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
kishon@ti.com, lorenzo.pieralisi@arm.com,
linux-riscv@lists.infradead.org, palmer@sifive.com,
paul.walmsley@sifive.com
Cc: Alan Mikhak <alan.mikhak@sifive.com>
Subject: [PATCH v2] PCI: endpoint: Set endpoint controller pointer to null
Date: Thu, 23 May 2019 14:45:44 -0700 [thread overview]
Message-ID: <1558647944-13816-1-git-send-email-alan.mikhak@sifive.com> (raw)
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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next reply other threads:[~2019-05-23 21:46 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-23 21:45 Alan Mikhak [this message]
2019-05-23 23:57 ` [PATCH v2] PCI: endpoint: Set endpoint controller pointer to null Alan Mikhak
2019-05-24 8:41 ` Kishon Vijay Abraham I
2019-05-24 6:38 ` Christoph Hellwig
2019-05-24 18:23 ` Alan Mikhak
2019-05-25 8:23 ` Christoph Hellwig
2019-05-24 19:04 ` Paul Walmsley
2019-05-24 19:05 ` Alan Mikhak
2019-05-25 8:24 ` Christoph Hellwig
2019-05-28 16:20 ` Alan Mikhak
2019-05-30 2:24 ` Palmer Dabbelt
2019-06-11 10:07 ` Lorenzo Pieralisi
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