diff options
| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2013-12-12 20:48:32 +0400 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-12-16 17:37:54 +0400 |
| commit | aa3b7c296732b4351dfdbfe70be6b38a0882be14 (patch) | |
| tree | c05230a7a6b82675a8b704cae62ed2af3bf8b19f /arch/s390/pci/pci_event.c | |
| parent | 99c64b6679c41d8238b154c1a462724d7101765c (diff) | |
| download | linux-aa3b7c296732b4351dfdbfe70be6b38a0882be14.tar.xz | |
s390/pci: prevent inadvertently triggered bus scans
Initialization and scanning of the pci bus is omitted on older
machines without pci support or if pci=off was specified. Remember
the fact that we ran without pci support and prevent further bus
scans during resume from hibernate or after receiving hotplug
notifications.
Reported-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/pci/pci_event.c')
| -rw-r--r-- | arch/s390/pci/pci_event.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/arch/s390/pci/pci_event.c b/arch/s390/pci/pci_event.c index 800f064b0da7..228787a3630a 100644 --- a/arch/s390/pci/pci_event.c +++ b/arch/s390/pci/pci_event.c @@ -43,9 +43,8 @@ struct zpci_ccdf_avail { u16 pec; /* PCI event code */ } __packed; -void zpci_event_error(void *data) +static void __zpci_event_error(struct zpci_ccdf_err *ccdf) { - struct zpci_ccdf_err *ccdf = data; struct zpci_dev *zdev = get_zdev_by_fid(ccdf->fid); zpci_err("error CCDF:\n"); @@ -58,9 +57,14 @@ void zpci_event_error(void *data) pci_name(zdev->pdev), ccdf->pec, ccdf->fid); } -void zpci_event_availability(void *data) +void zpci_event_error(void *data) +{ + if (zpci_is_enabled()) + __zpci_event_error(data); +} + +static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf) { - struct zpci_ccdf_avail *ccdf = data; struct zpci_dev *zdev = get_zdev_by_fid(ccdf->fid); struct pci_dev *pdev = zdev ? zdev->pdev : NULL; int ret; @@ -115,3 +119,9 @@ void zpci_event_availability(void *data) break; } } + +void zpci_event_availability(void *data) +{ + if (zpci_is_enabled()) + __zpci_event_availability(data); +} |