[SCSI] zfcp: Simplify get_adapter_by_busid
Call the helper function from cio instead looping through all zfcp
adapters.
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index 811ce8a..6397de0 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -106,19 +106,6 @@
return 0;
}
-static struct zfcp_adapter *zfcp_get_adapter_by_busid(char *bus_id)
-{
- struct zfcp_adapter *adapter;
-
- list_for_each_entry(adapter, &zfcp_data.adapter_list_head, list)
- if ((strncmp(bus_id, adapter->ccw_device->dev.bus_id,
- BUS_ID_SIZE) == 0) &&
- !(atomic_read(&adapter->status) &
- ZFCP_STATUS_COMMON_REMOVE))
- return adapter;
- return NULL;
-}
-
static void __init zfcp_init_device_configure(void)
{
struct zfcp_adapter *adapter;
diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c
index 0e1a42f..3a9bd54 100644
--- a/drivers/s390/scsi/zfcp_ccw.c
+++ b/drivers/s390/scsi/zfcp_ccw.c
@@ -224,3 +224,20 @@
{
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 --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h
index ca1db97..b8c5c37 100644
--- a/drivers/s390/scsi/zfcp_ext.h
+++ b/drivers/s390/scsi/zfcp_ext.h
@@ -27,6 +27,7 @@
/* zfcp_ccw.c */
extern int zfcp_ccw_register(void);
+extern struct zfcp_adapter *zfcp_get_adapter_by_busid(char *);
/* zfcp_cfdc.c */
extern struct miscdevice zfcp_cfdc_misc;