diff options
| author | Niklas Schnelle <schnelle@linux.ibm.com> | 2019-11-28 09:30:00 +0100 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2019-11-30 10:52:46 +0100 |
| commit | 794b8846dcdc0c6e23bbf4e5283415cab0caa9ac (patch) | |
| tree | 87a4b1981aa37cd9727aeb099c90e187e2df9d77 /arch/s390/pci | |
| parent | 247f265fa502e7b17a0cb0cc330e055a36aafce4 (diff) | |
s390/pci: add error message for UID collision
When UID checking was turned off during runtime in the underlying
hypervisor, a PCI device may be attached with the same UID. This is
already detected but happens silently. Add an error message so it can
more easily be understood why a device was not added.
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/s390/pci')
| -rw-r--r-- | arch/s390/pci/pci.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index c7fea9bea8cb..4901f5d1c479 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -27,6 +27,7 @@ #include <linux/seq_file.h> #include <linux/jump_label.h> #include <linux/pci.h> +#include <linux/printk.h> #include <asm/isc.h> #include <asm/airq.h> @@ -659,6 +660,8 @@ static int zpci_alloc_domain(struct zpci_dev *zdev) spin_lock(&zpci_domain_lock); if (test_bit(zdev->domain, zpci_domain)) { spin_unlock(&zpci_domain_lock); + pr_err("Adding PCI function %08x failed because domain %04x is already assigned\n", + zdev->fid, zdev->domain); return -EEXIST; } set_bit(zdev->domain, zpci_domain); |