mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-29 01:59:02 +00:00
95 lines
3.4 KiB
Diff
95 lines
3.4 KiB
Diff
|
From e5f587242b6072ffab4f4a084a459a59f3035873 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Christian Marangi <ansuelsmth@gmail.com>
|
||
|
|
Date: Thu, 3 Oct 2024 00:11:43 +0200
|
||
|
|
Subject: [PATCH 3/5] block: introduce add_disk_fwnode()
|
||
|
|
|
||
|
|
Introduce add_disk_fwnode() as a replacement of device_add_disk() that
|
||
|
|
permits to pass and attach a fwnode to disk dev.
|
||
|
|
|
||
|
|
This variant can be useful for eMMC that might have the partition table
|
||
|
|
for the disk defined in DT. A parser can later make use of the attached
|
||
|
|
fwnode to parse the related table and init the hardcoded partition for
|
||
|
|
the disk.
|
||
|
|
|
||
|
|
device_add_disk() is converted to a simple wrapper of add_disk_fwnode()
|
||
|
|
with the fwnode entry set as NULL.
|
||
|
|
|
||
|
|
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
|
||
|
|
Reviewed-by: Christoph Hellwig <hch@lst.de>
|
||
|
|
Link: https://lore.kernel.org/r/20241002221306.4403-4-ansuelsmth@gmail.com
|
||
|
|
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
||
|
|
---
|
||
|
|
block/genhd.c | 28 ++++++++++++++++++++++++----
|
||
|
|
include/linux/blkdev.h | 3 +++
|
||
|
|
2 files changed, 27 insertions(+), 4 deletions(-)
|
||
|
|
|
||
|
|
--- a/block/genhd.c
|
||
|
|
+++ b/block/genhd.c
|
||
|
|
@@ -383,16 +383,18 @@ int disk_scan_partitions(struct gendisk
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
- * device_add_disk - add disk information to kernel list
|
||
|
|
+ * add_disk_fwnode - add disk information to kernel list with fwnode
|
||
|
|
* @parent: parent device for the disk
|
||
|
|
* @disk: per-device partitioning information
|
||
|
|
* @groups: Additional per-device sysfs groups
|
||
|
|
+ * @fwnode: attached disk fwnode
|
||
|
|
*
|
||
|
|
* This function registers the partitioning information in @disk
|
||
|
|
- * with the kernel.
|
||
|
|
+ * with the kernel. Also attach a fwnode to the disk device.
|
||
|
|
*/
|
||
|
|
-int __must_check device_add_disk(struct device *parent, struct gendisk *disk,
|
||
|
|
- const struct attribute_group **groups)
|
||
|
|
+int __must_check add_disk_fwnode(struct device *parent, struct gendisk *disk,
|
||
|
|
+ const struct attribute_group **groups,
|
||
|
|
+ struct fwnode_handle *fwnode)
|
||
|
|
|
||
|
|
{
|
||
|
|
struct device *ddev = disk_to_dev(disk);
|
||
|
|
@@ -451,6 +453,8 @@ int __must_check device_add_disk(struct
|
||
|
|
ddev->parent = parent;
|
||
|
|
ddev->groups = groups;
|
||
|
|
dev_set_name(ddev, "%s", disk->disk_name);
|
||
|
|
+ if (fwnode)
|
||
|
|
+ device_set_node(ddev, fwnode);
|
||
|
|
if (!(disk->flags & GENHD_FL_HIDDEN))
|
||
|
|
ddev->devt = MKDEV(disk->major, disk->first_minor);
|
||
|
|
ret = device_add(ddev);
|
||
|
|
@@ -552,6 +556,22 @@ out_exit_elevator:
|
||
|
|
elevator_exit(disk->queue);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
+EXPORT_SYMBOL_GPL(add_disk_fwnode);
|
||
|
|
+
|
||
|
|
+/**
|
||
|
|
+ * device_add_disk - add disk information to kernel list
|
||
|
|
+ * @parent: parent device for the disk
|
||
|
|
+ * @disk: per-device partitioning information
|
||
|
|
+ * @groups: Additional per-device sysfs groups
|
||
|
|
+ *
|
||
|
|
+ * This function registers the partitioning information in @disk
|
||
|
|
+ * with the kernel.
|
||
|
|
+ */
|
||
|
|
+int __must_check device_add_disk(struct device *parent, struct gendisk *disk,
|
||
|
|
+ const struct attribute_group **groups)
|
||
|
|
+{
|
||
|
|
+ return add_disk_fwnode(parent, disk, groups, NULL);
|
||
|
|
+}
|
||
|
|
EXPORT_SYMBOL(device_add_disk);
|
||
|
|
|
||
|
|
static void blk_report_disk_dead(struct gendisk *disk, bool surprise)
|
||
|
|
--- a/include/linux/blkdev.h
|
||
|
|
+++ b/include/linux/blkdev.h
|
||
|
|
@@ -741,6 +741,9 @@ static inline unsigned int blk_queue_dep
|
||
|
|
#define for_each_bio(_bio) \
|
||
|
|
for (; _bio; _bio = _bio->bi_next)
|
||
|
|
|
||
|
|
+int __must_check add_disk_fwnode(struct device *parent, struct gendisk *disk,
|
||
|
|
+ const struct attribute_group **groups,
|
||
|
|
+ struct fwnode_handle *fwnode);
|
||
|
|
int __must_check device_add_disk(struct device *parent, struct gendisk *disk,
|
||
|
|
const struct attribute_group **groups);
|
||
|
|
static inline int __must_check add_disk(struct gendisk *disk)
|