On 02/19/2014 10:22 AM, Boris Ostrovsky wrote:
On 02/19/2014 05:15 AM, Alexander Gordeev wrote:
As result of deprecation of MSI-X/MSI enablement functions
pci_enable_msix() and pci_enable_msi_block() all drivers
using these two interfaces need to be updated to use the
new pci_enable_msi_range() and pci_enable_msix_range()
interfaces.
Signed-off-by: Alexander Gordeev <agordeev@xxxxxxxxxx>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Cc: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
Cc: David Vrabel <david.vrabel@xxxxxxxxxx>
Cc: linux-pci@xxxxxxxxxxxxxxx
---
drivers/xen/xen-pciback/pciback_ops.c | 16 ++++++++++------
1 files changed, 10 insertions(+), 6 deletions(-)
diff --git a/drivers/xen/xen-pciback/pciback_ops.c
b/drivers/xen/xen-pciback/pciback_ops.c
index 64eb0cd..f5b4c3e 100644
--- a/drivers/xen/xen-pciback/pciback_ops.c
+++ b/drivers/xen/xen-pciback/pciback_ops.c
@@ -213,9 +213,15 @@ int xen_pcibk_enable_msix(struct
xen_pcibk_device *pdev,
entries[i].vector = op->msix_entries[i].vector;
}
- result = pci_enable_msix(dev, entries, op->value);
+ result = pci_enable_msix_range(dev, entries, op->value, op->value);
+ if (result < op->value) {
I think it would be better to have 'if (result != op->value)', in case
op->value is negative (which presumably it should never be).
Better yet, at the top of the routine we check 'if (op->value >
SH_INFO_MAX_VEC)'. If you add '|| op->value < 0' we'd be all set.
-boris
-boris
+ if (result > 0)
+ pci_disable_msix(dev);
- if (result == 0) {
+ pr_warn_ratelimited("%s: error enabling MSI-X for guest %u:
err %d!\n",
+ pci_name(dev), pdev->xdev->otherend_id,
+ result);
+ } else {
for (i = 0; i < op->value; i++) {
op->msix_entries[i].entry = entries[i].entry;
if (entries[i].vector)
@@ -227,10 +233,8 @@ int xen_pcibk_enable_msix(struct
xen_pcibk_device *pdev,
pci_name(dev), i,
op->msix_entries[i].vector);
}
- } else
- pr_warn_ratelimited("%s: error enabling MSI-X for guest %u:
err %d!\n",
- pci_name(dev), pdev->xdev->otherend_id,
- result);
+ }
+
kfree(entries);
op->value = result;
--
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