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xen/pciback: Don't print scary messages when unsupported by hypervisor.

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We print at the warninig level messages such as:
pciback 0000:90:00.5: MSI-X preparation failed (-38)

which is due to the hypervisor not supporting this sub-hypercall
(which was added in Xen 4.3).

Instead of having scary messages all the time - only have it
when the hypercall is actually supported.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
This commit is contained in:
Konrad Rzeszutek Wilk 2015-02-27 16:11:06 -05:00 committed by David Vrabel
parent 526abeaed4
commit 74beaf6270
1 changed files with 2 additions and 2 deletions
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4
drivers/xen/xen-pciback/pci_stub.c
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@ -118,7 +118,7 @@ static void pcistub_device_release(struct kref *kref)
int err = HYPERVISOR_physdev_op(PHYSDEVOP_release_msix,
&ppdev);
if (err)
if (err && err != -ENOSYS)
dev_warn(&dev->dev, "MSI-X release failed (%d)\n",
err);
}
@ -402,7 +402,7 @@ static int pcistub_init_device(struct pci_dev *dev)
};
err = HYPERVISOR_physdev_op(PHYSDEVOP_prepare_msix, &ppdev);
if (err)
if (err && err != -ENOSYS)
dev_err(&dev->dev, "MSI-X preparation failed (%d)\n",
err);
}