Commit da78693e authored by Niklas Schnelle's avatar Niklas Schnelle Committed by Heiko Carstens
Browse files

s390/pci: inform when missing required facilities 



when we're missing the necessary machine facilities zPCI can
not function. Until now it would silently fail to be initialized,
add an informational print.

Signed-off-by: default avatarNiklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
parent ab177c5d

arch/s390/pci/pci.c

+3 −1
Original line number Diff line number Diff line
@@ -851,8 +851,10 @@ static int __init pci_base_init(void) 
	if (!s390_pci_probe)

		return 0;



	if (!test_facility(69) || !test_facility(71))

	if (!test_facility(69) || !test_facility(71)) {

		pr_info("PCI is not supported because CPU facilities 69 or 71 are not available\n");

		return 0;

	}



	if (test_facility(153) && !s390_pci_no_mio) {

		static_branch_enable(&have_mio);