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| author | Alan Mikhak <alan.mikhak@sifive.com> | 2019-05-23 23:45:44 +0200 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2019-06-11 11:55:12 +0200 |
| commit | db7a62482d2f6a63f36f30f62c4cbf1e53035719 (patch) | |
| tree | 59c72b1d0e6025896352df61cad86f5d973f73a7 /drivers/pci | |
| parent | Linux 5.2-rc1 (diff) | |
| download | linux-db7a62482d2f6a63f36f30f62c4cbf1e53035719.tar.xz linux-db7a62482d2f6a63f36f30f62c4cbf1e53035719.zip | |
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>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/endpoint/pci-epc-core.c | 3 |
1 files changed, 2 insertions, 1 deletions
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); |