From: Bjorn Helgaas Date: Wed, 25 Mar 2015 08:23:42 +0000 (+0800) Subject: PCI: Print more info in sriov_enable() error message X-Git-Tag: v5.15~15963^2~7^2~20 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=68f8e9fa56ce6b5cb18323e8d8fa536fee0f89ca;p=platform%2Fkernel%2Flinux-starfive.git 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 Acked-by: Wei Yang Signed-off-by: Benjamin Herrenschmidt --- 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; }