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| author |   Niklas Schnelle <schnelle@linux.ibm.com> | 2019-11-28 09:31:52 +0100 |
|---|---|---|
| committer |   Vasily Gorbik <gor@linux.ibm.com> | 2019-11-30 10:52:46 +0100 |
| commit | d497b7ec836d2c900993f1c43b2ddff5f8a6b129 (patch) | |
| tree | c4396df9b9386e3e80c403b91cb445ca10800030 /arch | |
| parent | s390/pci: add error message for UID collision (diff) | |
| download | linux-dev-d497b7ec836d2c900993f1c43b2ddff5f8a6b129.tar.xz linux-dev-d497b7ec836d2c900993f1c43b2ddff5f8a6b129.zip | |
s390/pci: add error message on device number limit
The config option CONFIG_PCI_NR_FUNCTIONS sets a limit on the number of
PCI functions we can support. Previously on reaching this limit there
was no indication why newly attached devices are not recognized by Linux
which could be quite confusing. Thus this patch adds a pr_err() for this
case.
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/pci/pci.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index 4901f5d1c479..2e377f2b7b6d 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -673,6 +673,8 @@ static int zpci_alloc_domain(struct zpci_dev *zdev) zdev->domain = find_first_zero_bit(zpci_domain, ZPCI_NR_DEVICES); if (zdev->domain == ZPCI_NR_DEVICES) { spin_unlock(&zpci_domain_lock); + pr_err("Adding PCI function %08x failed because the configured limit of %d is reached\n", + zdev->fid, ZPCI_NR_DEVICES); return -ENOSPC; } set_bit(zdev->domain, zpci_domain); |