diff options
| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2013-08-29 21:40:01 +0400 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-08-30 10:57:20 +0400 |
| commit | 57b5918c33a0797930c3791fb602a8a9d46ef80c (patch) | |
| tree | 47e3a5b503e8551f130fb722fbf1ae281e6ed292 /arch/s390/pci/pci.c | |
| parent | d03abe5882cc4815bf98c0e01a1deafa4a5d6730 (diff) | |
| download | linux-57b5918c33a0797930c3791fb602a8a9d46ef80c.tar.xz | |
s390/pci: update function handle after resume from hibernate
Function handles may change while the system was in hibernation
use list pci functions and update the function handles.
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.c')
| -rw-r--r-- | arch/s390/pci/pci.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index a7ed6685e7fb..f17a8343e360 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -46,7 +46,7 @@ /* list of all detected zpci devices */ static LIST_HEAD(zpci_list); -static DEFINE_MUTEX(zpci_list_lock); +static DEFINE_SPINLOCK(zpci_list_lock); static void zpci_enable_irq(struct irq_data *data); static void zpci_disable_irq(struct irq_data *data); @@ -88,14 +88,14 @@ struct zpci_dev *get_zdev_by_fid(u32 fid) { struct zpci_dev *tmp, *zdev = NULL; - mutex_lock(&zpci_list_lock); + spin_lock(&zpci_list_lock); list_for_each_entry(tmp, &zpci_list, entry) { if (tmp->fid == fid) { zdev = tmp; break; } } - mutex_unlock(&zpci_list_lock); + spin_unlock(&zpci_list_lock); return zdev; } @@ -821,9 +821,9 @@ int zpci_create_device(struct zpci_dev *zdev) if (rc) goto out_disable; - mutex_lock(&zpci_list_lock); + spin_lock(&zpci_list_lock); list_add_tail(&zdev->entry, &zpci_list); - mutex_unlock(&zpci_list_lock); + spin_unlock(&zpci_list_lock); zpci_init_slot(zdev); @@ -939,3 +939,8 @@ out: return rc; } subsys_initcall_sync(pci_base_init); + +void zpci_rescan(void) +{ + clp_rescan_pci_devices_simple(); +} |