[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>

1 files changed, 17 insertions, 0 deletions

diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c
index 0e1a42f7a4b5..3a9bd5451a49 100644
--- a/drivers/s390/scsi/zfcp_ccw.c
+++ b/drivers/s390/scsi/zfcp_ccw.c
@@ -224,3 +224,20 @@ 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;
+}