PCI: Fix sriov_enable() error path for pcibios_enable_sriov() failures
Disable VFs if pcibios_enable_sriov() fails, just like we do for other
errors in sriov_enable(). Call pcibios_sriov_disable() if virtfn_add()
fails.
[bhelgaas: changelog, split to separate patch for reviewability]
Fixes: 995df527f399 ("PCI: Add pcibios_sriov_enable() and pcibios_sriov_disable()")
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Wei Yang <weiyang@linux.vnet.ibm.com>diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index 24428d5..bd1c4fa 100644
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -246,7 +246,6 @@
struct pci_sriov *iov = dev->sriov;
int bars = 0;
int bus;
- int retval;
if (!nr_virtfn)
return 0;
@@ -315,10 +314,10 @@
if (nr_virtfn < initial)
initial = nr_virtfn;
- if ((retval = pcibios_sriov_enable(dev, initial))) {
- dev_err(&dev->dev, "failure %d from pcibios_sriov_enable()\n",
- retval);
- return retval;
+ rc = pcibios_sriov_enable(dev, initial);
+ if (rc) {
+ dev_err(&dev->dev, "failure %d from pcibios_sriov_enable()\n", rc);
+ goto err_pcibios;
}
for (i = 0; i < initial; i++) {
@@ -336,6 +335,8 @@
while (i--)
virtfn_remove(dev, i, 0);
+ pcibios_sriov_disable(dev);
+err_pcibios:
iov->ctrl &= ~(PCI_SRIOV_CTRL_VFE | PCI_SRIOV_CTRL_MSE);
pci_cfg_access_lock(dev);
pci_write_config_word(dev, iov->pos + PCI_SRIOV_CTRL, iov->ctrl);