diff mbox series

[v2,05/10] s390/dasd: Move duplicate code to separate function

Message ID 20201008131336.61100-6-sth@linux.ibm.com (mailing list archive)
State New, archived
Headers show
Series DASD FC endpoint security | expand

Commit Message

Stefan Haberland Oct. 8, 2020, 1:13 p.m. UTC 
From: Jan Höppner <hoeppner@linux.ibm.com>

For storing retrieved path information both the if and else block in
dasd_eckd_read_conf() use the same code. To avoid duplicate code this
should be done after the if/else block. To further increase readability,
move the code to a new function, dasd_eckd_store_conf_data().

Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
---
 drivers/s390/block/dasd_eckd.c | 42 ++++++++++++++++------------------
 1 file changed, 20 insertions(+), 22 deletions(-)

Comments

Cornelia Huck Oct. 8, 2020, 2:16 p.m. UTC | #1 
On Thu,  8 Oct 2020 15:13:31 +0200
Stefan Haberland <sth@linux.ibm.com> wrote:

> From: Jan Höppner <hoeppner@linux.ibm.com>
> 
> For storing retrieved path information both the if and else block in
> dasd_eckd_read_conf() use the same code. To avoid duplicate code this
> should be done after the if/else block. To further increase readability,
> move the code to a new function, dasd_eckd_store_conf_data().
> 
> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
> Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
> Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
> ---
>  drivers/s390/block/dasd_eckd.c | 42 ++++++++++++++++------------------
>  1 file changed, 20 insertions(+), 22 deletions(-)

Reviewed-by: Cornelia Huck <cohuck@redhat.com>
diff mbox series

Patch

diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 2b39d2a5965f..497aa81778b6 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -1000,6 +1000,22 @@  static unsigned char dasd_eckd_path_access(void *conf_data, int conf_len)
 		return 0;
 }
 
+static void dasd_eckd_store_conf_data(struct dasd_device *device,
+				      struct dasd_conf_data *conf_data, int chp)
+{
+	struct channel_path_desc_fmt0 *chp_desc;
+	struct subchannel_id sch_id;
+
+	ccw_device_get_schid(device->cdev, &sch_id);
+	device->path[chp].conf_data = conf_data;
+	device->path[chp].cssid = sch_id.cssid;
+	device->path[chp].ssid = sch_id.ssid;
+	chp_desc = ccw_device_get_chp_desc(device->cdev, chp);
+	if (chp_desc)
+		device->path[chp].chpid = chp_desc->chpid;
+	kfree(chp_desc);
+}
+
 static void dasd_eckd_clear_conf_data(struct dasd_device *device)
 {
 	struct dasd_eckd_private *private = device->private;
@@ -1016,7 +1032,6 @@  static void dasd_eckd_clear_conf_data(struct dasd_device *device)
 	}
 }
 
-
 static int dasd_eckd_read_conf(struct dasd_device *device)
 {
 	void *conf_data;
@@ -1026,12 +1041,9 @@  static int dasd_eckd_read_conf(struct dasd_device *device)
 	struct dasd_eckd_private *private, path_private;
 	struct dasd_uid *uid;
 	char print_path_uid[60], print_device_uid[60];
-	struct channel_path_desc_fmt0 *chp_desc;
-	struct subchannel_id sch_id;
 
 	private = device->private;
 	opm = ccw_device_get_path_mask(device->cdev);
-	ccw_device_get_schid(device->cdev, &sch_id);
 	conf_data_saved = 0;
 	path_err = 0;
 	/* get configuration data per operational path */
@@ -1066,15 +1078,6 @@  static int dasd_eckd_read_conf(struct dasd_device *device)
 				kfree(conf_data);
 				continue;
 			}
-			pos = pathmask_to_pos(lpm);
-			/* store per path conf_data */
-			device->path[pos].conf_data = conf_data;
-			device->path[pos].cssid = sch_id.cssid;
-			device->path[pos].ssid = sch_id.ssid;
-			chp_desc = ccw_device_get_chp_desc(device->cdev, pos);
-			if (chp_desc)
-				device->path[pos].chpid = chp_desc->chpid;
-			kfree(chp_desc);
 			/*
 			 * build device UID that other path data
 			 * can be compared to it
@@ -1132,18 +1135,13 @@  static int dasd_eckd_read_conf(struct dasd_device *device)
 				dasd_path_add_cablepm(device, lpm);
 				continue;
 			}
-			pos = pathmask_to_pos(lpm);
-			/* store per path conf_data */
-			device->path[pos].conf_data = conf_data;
-			device->path[pos].cssid = sch_id.cssid;
-			device->path[pos].ssid = sch_id.ssid;
-			chp_desc = ccw_device_get_chp_desc(device->cdev, pos);
-			if (chp_desc)
-				device->path[pos].chpid = chp_desc->chpid;
-			kfree(chp_desc);
 			path_private.conf_data = NULL;
 			path_private.conf_len = 0;
 		}
+
+		pos = pathmask_to_pos(lpm);
+		dasd_eckd_store_conf_data(device, conf_data, pos);
+
 		switch (dasd_eckd_path_access(conf_data, conf_len)) {
 		case 0x02:
 			dasd_path_add_nppm(device, lpm);