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s390/pci: rename zpci_configure_device()

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With zpci_configure_device() now always called on a device that has
already been configured on the platform level its name has become
misleading. Rename it to zpci_scan_configured_device() to signify that
the function now only handles the correct scanning of a newly configured
PCI function taking care of the special handling necessary for function
0 and functions parked waiting for a PCI bus that can't be created
without first seeing function 0.

Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
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>
This commit is contained in:
Niklas Schnelle 2021-04-09 14:08:50 +02:00 committed by Heiko Carstens
parent 6daa755f81
commit a7f82c3641
4 changed files with 9 additions and 7 deletions
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2
arch/s390/include/asm/pci.h
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@ -204,7 +204,7 @@ extern unsigned int s390_pci_no_rid;
struct zpci_dev *zpci_create_device(u32 fid, u32 fh, enum zpci_state state);
int zpci_enable_device(struct zpci_dev *);
int zpci_disable_device(struct zpci_dev *);
int zpci_configure_device(struct zpci_dev *zdev, u32 fh);
int zpci_scan_configured_device(struct zpci_dev *zdev, u32 fh);
int zpci_deconfigure_device(struct zpci_dev *zdev);
int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64);

10
arch/s390/pci/pci.c
View File

@ -738,17 +738,19 @@ error:
}
/**
* zpci_configure_device() - Configure a zpci_dev
* zpci_scan_configured_device() - Scan a freshly configured zpci_dev
* @zdev: The zpci_dev to be configured
* @fh: The general function handle supplied by the platform
*
* Given a device in the configuration state Configured, enables, scans and
* adds it to the common code PCI subsystem. If any failure occurs, the
* zpci_dev is left disabled.
* adds it to the common code PCI subsystem if possible. If the PCI device is
* parked because we can not yet create a PCI bus because we have not seen
* function 0, it is ignored but will be scanned once function 0 appears.
* If any failure occurs, the zpci_dev is left disabled.
*
* Return: 0 on success, or an error code otherwise
*/
int zpci_configure_device(struct zpci_dev *zdev, u32 fh)
int zpci_scan_configured_device(struct zpci_dev *zdev, u32 fh)
{
int rc;

2
arch/s390/pci/pci_event.c
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@ -113,7 +113,7 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf)
break;
zdev->state = ZPCI_FN_STATE_CONFIGURED;
}
zpci_configure_device(zdev, ccdf->fh);
zpci_scan_configured_device(zdev, ccdf->fh);
break;
case 0x0302: /* Reserved -> Standby */
if (!zdev)

2
drivers/pci/hotplug/s390_pci_hpc.c
View File

@ -35,7 +35,7 @@ static int enable_slot(struct hotplug_slot *hotplug_slot)
return rc;
zdev->state = ZPCI_FN_STATE_CONFIGURED;
return zpci_configure_device(zdev, zdev->fh);
return zpci_scan_configured_device(zdev, zdev->fh);
}
static int disable_slot(struct hotplug_slot *hotplug_slot)