[PATCH V15 03/21] PCI: Print more info in sriov_enable() error message
From: Wei Yang <hidden>
Date: 2015-03-25 05:49:15
Also in:
linux-pci
Subsystem:
pci subsystem, the rest · Maintainers:
Bjorn Helgaas, Linus Torvalds
From: Bjorn Helgaas <bhelgaas@google.com> 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 <redacted> --- drivers/pci/iov.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index 4b3a4ea..c4c33ea 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; }
--
1.7.9.5