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| author | Bjorn Helgaas | 2015-03-25 09:23:42 +0100 |
|---|---|---|
| committer | Benjamin Herrenschmidt | 2015-03-31 04:02:35 +0200 |
| commit | 68f8e9fa56ce6b5cb18323e8d8fa536fee0f89ca (patch) | |
| tree | b4cd2a2baf1b1053d1f49fcb668063aa04b8cd4a | |
| parent | powerpc/eeh: Remove device_node dependency (diff) | |
| download | kernel-qcow2-linux-68f8e9fa56ce6b5cb18323e8d8fa536fee0f89ca.tar.gz kernel-qcow2-linux-68f8e9fa56ce6b5cb18323e8d8fa536fee0f89ca.tar.xz kernel-qcow2-linux-68f8e9fa56ce6b5cb18323e8d8fa536fee0f89ca.zip | |
PCI: Print more info in sriov_enable() error message
If we don't have space for all the bus numbers required to enable VFs,
print the largest bus number required and the range available.
No functional change; improved error message only.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| -rw-r--r-- | drivers/pci/iov.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index 4b3a4eaad996..c4c33ead03bc 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -180,6 +180,7 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn) struct pci_dev *pdev; struct pci_sriov *iov = dev->sriov; int bars = 0; + u8 bus; if (!nr_virtfn) return 0; @@ -216,8 +217,10 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn) iov->offset = offset; iov->stride = stride; - if (virtfn_bus(dev, nr_virtfn - 1) > dev->bus->busn_res.end) { - dev_err(&dev->dev, "SR-IOV: bus number out of range\n"); + bus = virtfn_bus(dev, nr_virtfn - 1); + if (bus > dev->bus->busn_res.end) { + dev_err(&dev->dev, "can't enable %d VFs (bus %02x out of range of %pR)\n", + nr_virtfn, bus, &dev->bus->busn_res); return -ENOMEM; } |