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| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2015-07-28 19:14:51 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-07-29 09:11:56 +0200 |
| commit | 2a01bd1bd3d28d1eef26d5509c95d0923f7dc75c (patch) | |
| tree | 776693351e19810266d11b367699f627e14812ed | |
| parent | 515f022e8b59ce928fe5d82affb3e93ab53d12ed (diff) | |
| download | op-kernel-dev-2a01bd1bd3d28d1eef26d5509c95d0923f7dc75c.zip op-kernel-dev-2a01bd1bd3d28d1eef26d5509c95d0923f7dc75c.tar.gz | |
s390/pci: use pci_rescan_remove_lock
Make sure that we use the pci_rescan_remove_lock when we remove
or add functions from/to the bus.
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>
| -rw-r--r-- | arch/s390/pci/pci_event.c | 6 | ||||
| -rw-r--r-- | arch/s390/pci/pci_sysfs.c | 11 |
2 files changed, 13 insertions, 4 deletions
diff --git a/arch/s390/pci/pci_event.c b/arch/s390/pci/pci_event.c index eef76f0..369a3e0 100644 --- a/arch/s390/pci/pci_event.c +++ b/arch/s390/pci/pci_event.c @@ -87,7 +87,9 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf) ret = zpci_enable_device(zdev); if (ret) break; + pci_lock_rescan_remove(); pci_rescan_bus(zdev->bus); + pci_unlock_rescan_remove(); break; case 0x0302: /* Reserved -> Standby */ if (!zdev) @@ -95,7 +97,7 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf) break; case 0x0303: /* Deconfiguration requested */ if (pdev) - pci_stop_and_remove_bus_device(pdev); + pci_stop_and_remove_bus_device_locked(pdev); ret = zpci_disable_device(zdev); if (ret) @@ -112,7 +114,7 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf) /* Give the driver a hint that the function is * already unusable. */ pdev->error_state = pci_channel_io_perm_failure; - pci_stop_and_remove_bus_device(pdev); + pci_stop_and_remove_bus_device_locked(pdev); } zdev->fh = ccdf->fh; diff --git a/arch/s390/pci/pci_sysfs.c b/arch/s390/pci/pci_sysfs.c index dad920f..f37a580 100644 --- a/arch/s390/pci/pci_sysfs.c +++ b/arch/s390/pci/pci_sysfs.c @@ -44,17 +44,24 @@ static ssize_t recover_store(struct device *dev, struct device_attribute *attr, if (!device_remove_file_self(dev, attr)) return count; + pci_lock_rescan_remove(); pci_stop_and_remove_bus_device(pdev); ret = zpci_disable_device(zdev); if (ret) - return ret; + goto error; ret = zpci_enable_device(zdev); if (ret) - return ret; + goto error; pci_rescan_bus(zdev->bus); + pci_unlock_rescan_remove(); + return count; + +error: + pci_unlock_rescan_remove(); + return ret; } static DEVICE_ATTR_WO(recover); |
