diff options
| author | Moritz Fischer <mdf@kernel.org> | 2021-03-27 10:51:40 -0700 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2021-06-10 15:25:38 -0500 |
| commit | e9c3bbd68ec7dc5dd986f7270d9233d27b092816 (patch) | |
| tree | 580ae96d66e8732643fbd95f9ccd293b3749e25e /drivers/pci/iov.c | |
| parent | 6efb943b8616ec53a5e444193dccf1af9ad627b5 (diff) | |
PCI/IOV: Clarify error message for unbound devices
Be more verbose to disambiguate the error case when trying to configure
SR-IOV with no driver bound vs. a driver that does not implement the
.sriov_configure() callback.
Link: https://lore.kernel.org/r/20210327175140.682708-1-mdf@kernel.org
Reported-by: Brian Foley <bpfoley@google.com>
Signed-off-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Krzysztof Wilczyński <kw@linux.com>
Diffstat (limited to 'drivers/pci/iov.c')
| -rw-r--r-- | drivers/pci/iov.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index afc06e6ce115..5e8278a6f3b2 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -391,9 +391,16 @@ static ssize_t sriov_numvfs_store(struct device *dev, if (num_vfs == pdev->sriov->num_VFs) goto exit; + /* is PF driver loaded */ + if (!pdev->driver) { + pci_info(pdev, "no driver bound to device; cannot configure SR-IOV\n"); + ret = -ENOENT; + goto exit; + } + /* is PF driver loaded w/callback */ - if (!pdev->driver || !pdev->driver->sriov_configure) { - pci_info(pdev, "Driver does not support SRIOV configuration via sysfs\n"); + if (!pdev->driver->sriov_configure) { + pci_info(pdev, "driver does not support SR-IOV configuration via sysfs\n"); ret = -ENOENT; goto exit; } |