Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
mtd: ubi: populate ubi volume fwnode
Look for the 'volumes' subnode of an MTD partition attached to a UBI
device and attach matching child nodes to UBI volumes.
This allows UBI volumes to be referenced in device tree, e.g. for use
as NVMEM providers.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
authored by
Daniel Golle
and committed by
Richard Weinberger
51932f9f
7e84c961
+27
+27
drivers/mtd/ubi/vmt.c
+27
drivers/mtd/ubi/vmt.c
···
124
124
kfree(vol);
125
125
}
126
126
127
+
static struct fwnode_handle *find_volume_fwnode(struct ubi_volume *vol)
128
+
{
129
+
struct fwnode_handle *fw_vols, *fw_vol;
130
+
const char *volname;
131
+
u32 volid;
132
+
133
+
fw_vols = device_get_named_child_node(vol->dev.parent->parent, "volumes");
134
+
if (!fw_vols)
135
+
return NULL;
136
+
137
+
fwnode_for_each_child_node(fw_vols, fw_vol) {
138
+
if (!fwnode_property_read_string(fw_vol, "volname", &volname) &&
139
+
strncmp(volname, vol->name, vol->name_len))
140
+
continue;
141
+
142
+
if (!fwnode_property_read_u32(fw_vol, "volid", &volid) &&
143
+
vol->vol_id != volid)
144
+
continue;
145
+
146
+
return fw_vol;
147
+
}
148
+
149
+
return NULL;
150
+
}
151
+
127
152
/**
128
153
* ubi_create_volume - create volume.
129
154
* @ubi: UBI device description object
···
248
223
vol->name_len = req->name_len;
249
224
memcpy(vol->name, req->name, vol->name_len);
250
225
vol->ubi = ubi;
226
+
device_set_node(&vol->dev, find_volume_fwnode(vol));
251
227
252
228
/*
253
229
* Finish all pending erases because there may be some LEBs belonging
···
640
614
vol->dev.class = &ubi_class;
641
615
vol->dev.groups = volume_dev_groups;
642
616
dev_set_name(&vol->dev, "%s_%d", ubi->ubi_name, vol->vol_id);
617
+
device_set_node(&vol->dev, find_volume_fwnode(vol));
643
618
err = device_register(&vol->dev);
644
619
if (err) {
645
620
cdev_del(&vol->cdev);