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authorNiklas Schnelle <schnelle@linux.ibm.com>2020-08-03 17:46:32 +0200
committerHeiko Carstens <hca@linux.ibm.com>2020-08-17 13:17:25 +0200
commit2f0230b2f2d5fd287a85583eefb5aed35b6fe510 (patch)
treef1907580d3c5d61b2c5fc85250dd4c8210f9308a /arch
parent3cddb79afc60bcdb5fd9dd7a1c64a8d03bdd460f (diff)
s390/pci: re-introduce zpci_remove_device()
For fixing the PF to VF link removal we need to perform some action on every removal of a zdev from the common PCI subsystem. So in preparation re-introduce zpci_remove_device() and use that instead of directly calling the common code functions. This was actually still declared from earlier code but no longer implemented. Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/s390/pci/pci.c19
-rw-r--r--arch/s390/pci/pci_event.c4
2 files changed, 14 insertions, 9 deletions
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 3902c9f6f2d6..6e57ff885f8a 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -672,6 +672,16 @@ int zpci_disable_device(struct zpci_dev *zdev)
}
EXPORT_SYMBOL_GPL(zpci_disable_device);
+void zpci_remove_device(struct zpci_dev *zdev)
+{
+ struct zpci_bus *zbus = zdev->zbus;
+ struct pci_dev *pdev;
+
+ pdev = pci_get_slot(zbus->bus, zdev->devfn);
+ if (pdev)
+ pci_stop_and_remove_bus_device_locked(pdev);
+}
+
int zpci_create_device(struct zpci_dev *zdev)
{
int rc;
@@ -716,13 +726,8 @@ void zpci_release_device(struct kref *kref)
{
struct zpci_dev *zdev = container_of(kref, struct zpci_dev, kref);
- if (zdev->zbus->bus) {
- struct pci_dev *pdev;
-
- pdev = pci_get_slot(zdev->zbus->bus, zdev->devfn);
- if (pdev)
- pci_stop_and_remove_bus_device_locked(pdev);
- }
+ if (zdev->zbus->bus)
+ zpci_remove_device(zdev);
switch (zdev->state) {
case ZPCI_FN_STATE_ONLINE:
diff --git a/arch/s390/pci/pci_event.c b/arch/s390/pci/pci_event.c
index 4602068c7548..9a3a291cad43 100644
--- a/arch/s390/pci/pci_event.c
+++ b/arch/s390/pci/pci_event.c
@@ -121,7 +121,7 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf)
if (!zdev)
break;
if (pdev)
- pci_stop_and_remove_bus_device_locked(pdev);
+ zpci_remove_device(zdev);
ret = zpci_disable_device(zdev);
if (ret)
@@ -140,7 +140,7 @@ 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_locked(pdev);
+ zpci_remove_device(zdev);
}
zdev->state = ZPCI_FN_STATE_STANDBY;