From: Christof Schmitt <christof.schmitt@xxxxxxxxxx>
With the change for delaying the allocation of zfcp_adapter, the
initial device parameter function has to first call
ccw_device_set_online which allocates the zfcp_adapter structure.
Change this and adapt the cfdc part accordingly.
Reviewed-by: Felix Beck <felix.beck@xxxxxxxxxx>
Signed-off-by: Christof Schmitt <christof.schmitt@xxxxxxxxxx>
---
drivers/s390/scsi/zfcp_aux.c | 31 ++++++++++++++++++++-----------
drivers/s390/scsi/zfcp_ccw.c | 19 +------------------
drivers/s390/scsi/zfcp_cfdc.c | 17 ++++++++++++++++-
drivers/s390/scsi/zfcp_ext.h | 2 +-
4 files changed, 38 insertions(+), 31 deletions(-)
diff -urpN linux-2.6/drivers/s390/scsi/zfcp_aux.c linux-2.6-patched/drivers/s390/scsi/zfcp_aux.c
--- linux-2.6/drivers/s390/scsi/zfcp_aux.c 2009-09-23 10:12:54.000000000 +0200
+++ linux-2.6-patched/drivers/s390/scsi/zfcp_aux.c 2009-09-23 10:13:18.000000000 +0200
@@ -80,28 +80,35 @@ int zfcp_reqlist_isempty(struct zfcp_ada
static void __init zfcp_init_device_configure(char *busid, u64 wwpn, u64 lun)
{
+ struct ccw_device *ccwdev;
struct zfcp_adapter *adapter;
struct zfcp_port *port;
struct zfcp_unit *unit;
- mutex_lock(&zfcp_data.config_mutex);
- read_lock_irq(&zfcp_data.config_lock);
- adapter = zfcp_get_adapter_by_busid(busid);
- if (adapter)
- zfcp_adapter_get(adapter);
- read_unlock_irq(&zfcp_data.config_lock);
+ ccwdev = get_ccwdev_by_busid(&zfcp_ccw_driver, busid);
+ if (!ccwdev)
+ return;
+
+ if (ccw_device_set_online(ccwdev))
+ goto out_ccwdev;
+ mutex_lock(&zfcp_data.config_mutex);
+ adapter = dev_get_drvdata(&ccwdev->dev);
if (!adapter)
- goto out_adapter;
- port = zfcp_port_enqueue(adapter, wwpn, 0, 0);
- if (IS_ERR(port))
+ goto out_unlock;
+ zfcp_adapter_get(adapter);
+
+ port = zfcp_get_port_by_wwpn(adapter, wwpn);
+ if (!port)
goto out_port;
+
+ zfcp_port_get(port);
unit = zfcp_unit_enqueue(port, lun);
if (IS_ERR(unit))
goto out_unit;
mutex_unlock(&zfcp_data.config_mutex);
- ccw_device_set_online(adapter->ccw_device);
+ zfcp_erp_unit_reopen(unit, 0, "auidc_1", NULL);
zfcp_erp_wait(adapter);
flush_work(&unit->scsi_work);
@@ -111,8 +118,10 @@ out_unit:
zfcp_port_put(port);
out_port:
zfcp_adapter_put(adapter);
-out_adapter:
+out_unlock:
mutex_unlock(&zfcp_data.config_mutex);
+out_ccwdev:
+ put_device(&ccwdev->dev);
return;
}
diff -urpN linux-2.6/drivers/s390/scsi/zfcp_ccw.c linux-2.6-patched/drivers/s390/scsi/zfcp_ccw.c
--- linux-2.6/drivers/s390/scsi/zfcp_ccw.c 2009-09-23 10:12:54.000000000 +0200
+++ linux-2.6-patched/drivers/s390/scsi/zfcp_ccw.c 2009-09-23 10:13:18.000000000 +0200
@@ -259,7 +259,7 @@ static void zfcp_ccw_shutdown(struct ccw
mutex_unlock(&zfcp_data.config_mutex);
}
-static struct ccw_driver zfcp_ccw_driver = {
+struct ccw_driver zfcp_ccw_driver = {
.owner = THIS_MODULE,
.name = "zfcp",
.ids = zfcp_ccw_device_id,
@@ -284,20 +284,3 @@ int __init zfcp_ccw_register(void)
{
return ccw_driver_register(&zfcp_ccw_driver);
}
-
-/**
- * zfcp_get_adapter_by_busid - find zfcp_adapter struct
- * @busid: bus id string of zfcp adapter to find
- */
-struct zfcp_adapter *zfcp_get_adapter_by_busid(char *busid)
-{
- struct ccw_device *ccw_device;
- struct zfcp_adapter *adapter = NULL;
-
- ccw_device = get_ccwdev_by_busid(&zfcp_ccw_driver, busid);
- if (ccw_device) {
- adapter = dev_get_drvdata(&ccw_device->dev);
- put_device(&ccw_device->dev);
- }
- return adapter;
-}
diff -urpN linux-2.6/drivers/s390/scsi/zfcp_cfdc.c linux-2.6-patched/drivers/s390/scsi/zfcp_cfdc.c
--- linux-2.6/drivers/s390/scsi/zfcp_cfdc.c 2009-09-10 00:13:59.000000000 +0200
+++ linux-2.6-patched/drivers/s390/scsi/zfcp_cfdc.c 2009-09-23 10:13:18.000000000 +0200
@@ -86,8 +86,23 @@ static int zfcp_cfdc_copy_to_user(void _
static struct zfcp_adapter *zfcp_cfdc_get_adapter(u32 devno)
{
char busid[9];
+ struct ccw_device *ccwdev;
+ struct zfcp_adapter *adapter = NULL;
+
snprintf(busid, sizeof(busid), "0.0.%04x", devno);
- return zfcp_get_adapter_by_busid(busid);
+ ccwdev = get_ccwdev_by_busid(&zfcp_ccw_driver, busid);
+ if (!ccwdev)
+ goto out;
+
+ adapter = dev_get_drvdata(&ccwdev->dev);
+ if (!adapter)
+ goto out_put;
+
+ zfcp_adapter_get(adapter);
+out_put:
+ put_device(&ccwdev->dev);
+out:
+ return adapter;
}
static int zfcp_cfdc_set_fsf(struct zfcp_fsf_cfdc *fsf_cfdc, int command)
diff -urpN linux-2.6/drivers/s390/scsi/zfcp_ext.h linux-2.6-patched/drivers/s390/scsi/zfcp_ext.h
--- linux-2.6/drivers/s390/scsi/zfcp_ext.h 2009-09-23 10:12:54.000000000 +0200
+++ linux-2.6-patched/drivers/s390/scsi/zfcp_ext.h 2009-09-23 10:13:18.000000000 +0200
@@ -28,7 +28,7 @@ extern int zfcp_sg_setup_table(struct sc
/* zfcp_ccw.c */
extern int zfcp_ccw_register(void);
extern int zfcp_ccw_priv_sch(struct zfcp_adapter *);
-extern struct zfcp_adapter *zfcp_get_adapter_by_busid(char *);
+extern struct ccw_driver zfcp_ccw_driver;
/* zfcp_cfdc.c */
extern struct miscdevice zfcp_cfdc_misc;
--
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