Commit d497b7ec authored Nov 28, 2019 by Niklas Schnelle Committed by Vasily Gorbik Nov 30, 2019

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>

parent 794b8846

arch/s390/pci/pci.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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);

Admin message