Merge tag 'for-5.13/drivers-2021-04-27' of git://git.kernel.dk/linux-block

Pull block driver updates from Jens Axboe:

 - MD changes via Song:
        - raid5 POWER fix
        - raid1 failure fix
        - UAF fix for md cluster
        - mddev_find_or_alloc() clean up
        - Fix NULL pointer deref with external bitmap
        - Performance improvement for raid10 discard requests
        - Fix missing information of /proc/mdstat

 - rsxx const qualifier removal (Arnd)

 - Expose allocated brd pages (Calvin)

 - rnbd via Gioh Kim:
        - Change maintainer
        - Change domain address of maintainers' email
        - Add polling IO mode and document update
        - Fix memory leak and some bug detected by static code analysis
          tools
        - Code refactoring

 - Series of floppy cleanups/fixes (Denis)

 - s390 dasd fixes (Julian)

 - kerneldoc fixes (Lee)

 - null_blk double free (Lv)

 - null_blk virtual boundary addition (Max)

 - Remove xsysace driver (Michal)

 - umem driver removal (Davidlohr)

 - ataflop fixes (Dan)

 - Revalidate disk removal (Christoph)

 - Bounce buffer cleanups (Christoph)

 - Mark lightnvm as deprecated (Christoph)

 - mtip32xx init cleanups (Shixin)

 - Various fixes (Tian, Gustavo, Coly, Yang, Zhang, Zhiqiang)

* tag 'for-5.13/drivers-2021-04-27' of git://git.kernel.dk/linux-block: (143 commits)
  async_xor: increase src_offs when dropping destination page
  drivers/block/null_blk/main: Fix a double free in null_init.
  md/raid1: properly indicate failure when ending a failed write request
  md-cluster: fix use-after-free issue when removing rdev
  nvme: introduce generic per-namespace chardev
  nvme: cleanup nvme_configure_apst
  nvme: do not try to reconfigure APST when the controller is not live
  nvme: add 'kato' sysfs attribute
  nvme: sanitize KATO setting
  nvmet: avoid queuing keep-alive timer if it is disabled
  brd: expose number of allocated pages in debugfs
  ataflop: fix off by one in ataflop_probe()
  ataflop: potential out of bounds in do_format()
  drbd: Fix fall-through warnings for Clang
  block/rnbd: Use strscpy instead of strlcpy
  block/rnbd-clt-sysfs: Remove copy buffer overlap in rnbd_clt_get_path_name
  block/rnbd-clt: Remove max_segment_size
  block/rnbd-clt: Generate kobject_uevent when the rnbd device state changes
  block/rnbd-srv: Remove unused arguments of rnbd_srv_rdma_ev
  Documentation/ABI/rnbd-clt: Add description for nr_poll_queues
  ...

5 files changed, 8 insertions, 38 deletions

diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 3a945abf268c..c8df75e99f4c 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -3439,15 +3439,6 @@ 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;
 
 	/*
@@ -3488,15 +3479,13 @@ 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;
 	}
 	/*
@@ -3515,8 +3504,6 @@ 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 1aeb68794ce8..4789410885e4 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)
 {
@@ -71,9 +64,10 @@ 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_fba_probe,
+	.probe       = dasd_generic_probe,
 	.remove      = dasd_generic_remove,
 	.set_offline = dasd_generic_set_offline,
 	.set_online  = dasd_fba_set_online,
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 *);