* [PATCH 1/2] s390/dasd: remove dasd_fba_probe() wrapper
2021-03-16 9:45 [PATCH 0/2] s390/dasd: cleanup patches Stefan Haberland
@ 2021-03-16 9:45 ` Stefan Haberland
2021-03-16 9:45 ` [PATCH 2/2] s390/dasd: let driver core manage the sysfs attributes Stefan Haberland
2021-03-16 14:31 ` [PATCH 0/2] s390/dasd: cleanup patches Jens Axboe
2 siblings, 0 replies; 4+ messages in thread
From: Stefan Haberland @ 2021-03-16 9:45 UTC (permalink / raw)
To: Jens Axboe
Cc: linux-block, Jan Hoeppner, linux-s390, Heiko Carstens,
Vasily Gorbik, Christian Borntraeger, Julian Wiedmann
From: Julian Wiedmann <jwi@linux.ibm.com>
commit e03c5941f904 ("s390/dasd: Remove unused parameter from
dasd_generic_probe()") allows us to wire the generic callback up
directly, avoiding the additional level of indirection.
While at it also remove the forward declaration for the dasd_fba_driver
struct, it's no longer needed.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
---
drivers/s390/block/dasd_fba.c | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)
diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c
index 1aeb68794ce8..f76fe05b66c6 100644
--- a/drivers/s390/block/dasd_fba.c
+++ b/drivers/s390/block/dasd_fba.c
@@ -54,13 +54,6 @@ static struct ccw_device_id dasd_fba_ids[] = {
MODULE_DEVICE_TABLE(ccw, dasd_fba_ids);
-static struct ccw_driver dasd_fba_driver; /* see below */
-static int
-dasd_fba_probe(struct ccw_device *cdev)
-{
- return dasd_generic_probe(cdev);
-}
-
static int
dasd_fba_set_online(struct ccw_device *cdev)
{
@@ -73,7 +66,7 @@ static struct ccw_driver dasd_fba_driver = {
.owner = THIS_MODULE,
},
.ids = dasd_fba_ids,
- .probe = dasd_fba_probe,
+ .probe = dasd_generic_probe,
.remove = dasd_generic_remove,
.set_offline = dasd_generic_set_offline,
.set_online = dasd_fba_set_online,
--
2.25.1
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH 2/2] s390/dasd: let driver core manage the sysfs attributes
2021-03-16 9:45 [PATCH 0/2] s390/dasd: cleanup patches Stefan Haberland
2021-03-16 9:45 ` [PATCH 1/2] s390/dasd: remove dasd_fba_probe() wrapper Stefan Haberland
@ 2021-03-16 9:45 ` Stefan Haberland
2021-03-16 14:31 ` [PATCH 0/2] s390/dasd: cleanup patches Jens Axboe
2 siblings, 0 replies; 4+ messages in thread
From: Stefan Haberland @ 2021-03-16 9:45 UTC (permalink / raw)
To: Jens Axboe
Cc: linux-block, Jan Hoeppner, linux-s390, Heiko Carstens,
Vasily Gorbik, Christian Borntraeger, Julian Wiedmann
From: Julian Wiedmann <jwi@linux.ibm.com>
Wire up device_driver->dev_groups, so that really_probe() creates the
sysfs attributes for us automatically.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
---
drivers/s390/block/dasd.c | 17 ++---------------
drivers/s390/block/dasd_devmap.c | 15 ++-------------
drivers/s390/block/dasd_eckd.c | 1 +
drivers/s390/block/dasd_fba.c | 1 +
drivers/s390/block/dasd_int.h | 3 +--
5 files changed, 7 insertions(+), 30 deletions(-)
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index ba9ce4e0d30a..a446f7c1ec68 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -3440,15 +3440,6 @@ static void dasd_generic_auto_online(void *data, async_cookie_t cookie)
*/
int dasd_generic_probe(struct ccw_device *cdev)
{
- int ret;
-
- ret = dasd_add_sysfs_files(cdev);
- if (ret) {
- DBF_EVENT_DEVID(DBF_WARNING, cdev, "%s",
- "dasd_generic_probe: could not add "
- "sysfs entries");
- return ret;
- }
cdev->handler = &dasd_int_handler;
/*
@@ -3489,15 +3480,13 @@ void dasd_generic_remove(struct ccw_device *cdev)
struct dasd_block *block;
device = dasd_device_from_cdev(cdev);
- if (IS_ERR(device)) {
- dasd_remove_sysfs_files(cdev);
+ if (IS_ERR(device))
return;
- }
+
if (test_and_set_bit(DASD_FLAG_OFFLINE, &device->flags) &&
!test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) {
/* Already doing offline processing */
dasd_put_device(device);
- dasd_remove_sysfs_files(cdev);
return;
}
/*
@@ -3516,8 +3505,6 @@ void dasd_generic_remove(struct ccw_device *cdev)
*/
if (block)
dasd_free_block(block);
-
- dasd_remove_sysfs_files(cdev);
}
EXPORT_SYMBOL_GPL(dasd_generic_remove);
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c
index 03d27ee9cac6..2c40fe15da55 100644
--- a/drivers/s390/block/dasd_devmap.c
+++ b/drivers/s390/block/dasd_devmap.c
@@ -1772,12 +1772,13 @@ static const struct attribute_group ext_pool_attr_group = {
.attrs = ext_pool_attrs,
};
-static const struct attribute_group *dasd_attr_groups[] = {
+const struct attribute_group *dasd_dev_groups[] = {
&dasd_attr_group,
&capacity_attr_group,
&ext_pool_attr_group,
NULL,
};
+EXPORT_SYMBOL_GPL(dasd_dev_groups);
/*
* Return value of the specified feature.
@@ -1895,18 +1896,6 @@ void dasd_path_remove_kobjects(struct dasd_device *device)
}
EXPORT_SYMBOL(dasd_path_remove_kobjects);
-int dasd_add_sysfs_files(struct ccw_device *cdev)
-{
- return sysfs_create_groups(&cdev->dev.kobj, dasd_attr_groups);
-}
-
-void
-dasd_remove_sysfs_files(struct ccw_device *cdev)
-{
- sysfs_remove_groups(&cdev->dev.kobj, dasd_attr_groups);
-}
-
-
int
dasd_devmap_init(void)
{
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 65eb87cbbb9b..a6ac505cbdd7 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -6630,6 +6630,7 @@ static struct ccw_driver dasd_eckd_driver = {
.driver = {
.name = "dasd-eckd",
.owner = THIS_MODULE,
+ .dev_groups = dasd_dev_groups,
},
.ids = dasd_eckd_ids,
.probe = dasd_eckd_probe,
diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c
index f76fe05b66c6..4789410885e4 100644
--- a/drivers/s390/block/dasd_fba.c
+++ b/drivers/s390/block/dasd_fba.c
@@ -64,6 +64,7 @@ static struct ccw_driver dasd_fba_driver = {
.driver = {
.name = "dasd-fba",
.owner = THIS_MODULE,
+ .dev_groups = dasd_dev_groups,
},
.ids = dasd_fba_ids,
.probe = dasd_generic_probe,
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index b8a04c42d1d2..1c59b0e86a9f 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -854,8 +854,7 @@ void dasd_delete_device(struct dasd_device *);
int dasd_get_feature(struct ccw_device *, int);
int dasd_set_feature(struct ccw_device *, int, int);
-int dasd_add_sysfs_files(struct ccw_device *);
-void dasd_remove_sysfs_files(struct ccw_device *);
+extern const struct attribute_group *dasd_dev_groups[];
void dasd_path_create_kobj(struct dasd_device *, int);
void dasd_path_create_kobjects(struct dasd_device *);
void dasd_path_remove_kobjects(struct dasd_device *);
--
2.25.1
^ permalink raw reply related [flat|nested] 4+ messages in thread