dsectors = (dsectors>sectors)?sectors:dsectors;
dsize = dsectors << SECTOR_SHIFT;
- printk(KERN_DEBUG "FIT: volume size: %llu sectors (%llu bytes)\n", dsectors, dsize);
size = fdt_totalsize(init_fit);
- printk(KERN_DEBUG "FIT: FDT structure size: %u bytes\n", size);
+
+ /* silently skip non-external-data legacy FIT images */
if (size > PAGE_SIZE) {
- printk(KERN_ERR "FIT: FDT structure beyond page boundaries, use 'mkimage -E ...'!\n");
put_page(page);
- return -ENOTSUPP;
+ return 0;
}
if (size >= dsize) {
+ state->access_beyond_eod = 1;
put_page(page);
- state->access_beyond_eod = (size >= dsize);
- return 0;
+ return -EFBIG;
}
fit = kmemdup(init_fit, size, GFP_KERNEL);
config_description = fdt_getprop(fit, node, FIT_DESC_PROP, &config_description_len);
config_loadables = fdt_getprop(fit, node, FIT_LOADABLE_PROP, &config_loadables_len);
- printk(KERN_DEBUG "FIT: Default configuration: %s%s%s%s\n", config_default,
+ printk(KERN_DEBUG "FIT: Default configuration: \"%s\"%s%s%s\n", config_default,
config_description?" (":"", config_description?:"", config_description?")":"");
images = fdt_path_offset(fit, FIT_IMAGES_PATH);
image_description = fdt_getprop(fit, node, FIT_DESC_PROP, &image_description_len);
- printk(KERN_DEBUG "FIT: %16s sub-image 0x%08x - 0x%08x '%s' %s%s%s\n",
+ printk(KERN_DEBUG "FIT: %16s sub-image 0x%08x - 0x%08x \"%s\" %s%s%s\n",
image_type, image_pos, image_pos + image_len, image_name,
image_description?"(":"", image_description?:"", image_description?") ":"");
state->parts[*slot].has_info = true;
if (config_loadables && !strcmp(image_name, config_loadables)) {
- printk(KERN_DEBUG "FIT: selecting configured loadable %s to be root filesystem\n", image_name);
+ printk(KERN_DEBUG "FIT: selecting configured loadable \"%s\" to be root filesystem\n", image_name);
state->parts[*slot].flags |= ADDPART_FLAG_ROOTDEV;
}
}
+++ /dev/null
---- a/block/blk.h
-+++ b/block/blk.h
-@@ -357,6 +357,7 @@ char *disk_name(struct gendisk *hd, int
- #define ADDPART_FLAG_NONE 0
- #define ADDPART_FLAG_RAID 1
- #define ADDPART_FLAG_WHOLEDISK 2
-+#define ADDPART_FLAG_ROOTDEV 4
- void delete_partition(struct hd_struct *part);
- int bdev_add_partition(struct block_device *bdev, int partno,
- sector_t start, sector_t length);
---- a/block/partitions/Kconfig
-+++ b/block/partitions/Kconfig
-@@ -101,6 +101,13 @@ config ATARI_PARTITION
- Say Y here if you would like to use hard disks under Linux which
- were partitioned under the Atari OS.
-
-+config FIT_PARTITION
-+ bool "Flattened-Image-Tree (FIT) partition support" if PARTITION_ADVANCED
-+ default n
-+ help
-+ Say Y here if your system needs to mount the filesystem part of
-+ a Flattened-Image-Tree (FIT) image commonly used with Das U-Boot.
-+
- config IBM_PARTITION
- bool "IBM disk label and partition support"
- depends on PARTITION_ADVANCED && S390
---- a/block/partitions/Makefile
-+++ b/block/partitions/Makefile
-@@ -8,6 +8,7 @@ obj-$(CONFIG_ACORN_PARTITION) += acorn.o
- obj-$(CONFIG_AMIGA_PARTITION) += amiga.o
- obj-$(CONFIG_ATARI_PARTITION) += atari.o
- obj-$(CONFIG_AIX_PARTITION) += aix.o
-+obj-$(CONFIG_FIT_PARTITION) += fit.o
- obj-$(CONFIG_CMDLINE_PARTITION) += cmdline.o
- obj-$(CONFIG_MAC_PARTITION) += mac.o
- obj-$(CONFIG_LDM_PARTITION) += ldm.o
---- a/block/partitions/check.h
-+++ b/block/partitions/check.h
-@@ -58,6 +58,7 @@ int amiga_partition(struct parsed_partit
- int atari_partition(struct parsed_partitions *state);
- int cmdline_partition(struct parsed_partitions *state);
- int efi_partition(struct parsed_partitions *state);
-+int fit_partition(struct parsed_partitions *state);
- int ibm_partition(struct parsed_partitions *);
- int karma_partition(struct parsed_partitions *state);
- int ldm_partition(struct parsed_partitions *state);
-@@ -68,3 +69,5 @@ int sgi_partition(struct parsed_partitio
- int sun_partition(struct parsed_partitions *state);
- int sysv68_partition(struct parsed_partitions *state);
- int ultrix_partition(struct parsed_partitions *state);
-+
-+int parse_fit_partitions(struct parsed_partitions *state, u64 start_sector, u64 nr_sectors, int *slot, int add_remain);
---- a/block/partitions/core.c
-+++ b/block/partitions/core.c
-@@ -10,6 +10,10 @@
- #include <linux/vmalloc.h>
- #include <linux/blktrace_api.h>
- #include <linux/raid/detect.h>
-+#ifdef CONFIG_FIT_PARTITION
-+#include <linux/root_dev.h>
-+#endif
-+
- #include "check.h"
-
- static int (*check_part[])(struct parsed_partitions *) = {
-@@ -46,6 +50,9 @@ static int (*check_part[])(struct parsed
- #ifdef CONFIG_EFI_PARTITION
- efi_partition, /* this must come before msdos */
- #endif
-+#ifdef CONFIG_FIT_PARTITION
-+ fit_partition,
-+#endif
- #ifdef CONFIG_SGI_PARTITION
- sgi_partition,
- #endif
-@@ -215,6 +222,18 @@ static ssize_t part_discard_alignment_sh
- p->start_sect));
- }
-
-+static ssize_t part_name_show(struct device *dev,
-+ struct device_attribute *attr, char *buf)
-+{
-+ struct hd_struct *p = dev_to_part(dev);
-+
-+ if (p->info && p->info->volname)
-+ return sprintf(buf, "%s\n", p->info->volname);
-+
-+ buf[0] = '\0';
-+ return 0;
-+}
-+
- static DEVICE_ATTR(partition, 0444, part_partition_show, NULL);
- static DEVICE_ATTR(start, 0444, part_start_show, NULL);
- static DEVICE_ATTR(size, 0444, part_size_show, NULL);
-@@ -223,6 +242,7 @@ static DEVICE_ATTR(alignment_offset, 044
- static DEVICE_ATTR(discard_alignment, 0444, part_discard_alignment_show, NULL);
- static DEVICE_ATTR(stat, 0444, part_stat_show, NULL);
- static DEVICE_ATTR(inflight, 0444, part_inflight_show, NULL);
-+static DEVICE_ATTR(name, 0444, part_name_show, NULL);
- #ifdef CONFIG_FAIL_MAKE_REQUEST
- static struct device_attribute dev_attr_fail =
- __ATTR(make-it-fail, 0644, part_fail_show, part_fail_store);
-@@ -237,6 +257,7 @@ static struct attribute *part_attrs[] =
- &dev_attr_discard_alignment.attr,
- &dev_attr_stat.attr,
- &dev_attr_inflight.attr,
-+ &dev_attr_name.attr,
- #ifdef CONFIG_FAIL_MAKE_REQUEST
- &dev_attr_fail.attr,
- #endif
-@@ -694,6 +715,11 @@ static bool blk_add_partition(struct gen
- (state->parts[p].flags & ADDPART_FLAG_RAID))
- md_autodetect_dev(part_to_dev(part)->devt);
-
-+#ifdef CONFIG_FIT_PARTITION
-+ if ((state->parts[p].flags & ADDPART_FLAG_ROOTDEV) && ROOT_DEV == 0)
-+ ROOT_DEV = part_to_dev(part)->devt;
-+#endif
-+
- return true;
- }
-
---- a/drivers/mtd/ubi/block.c
-+++ b/drivers/mtd/ubi/block.c
-@@ -396,7 +396,7 @@ int ubiblock_create(struct ubi_volume_in
- dev->leb_size = vi->usable_leb_size;
-
- /* Initialize the gendisk of this ubiblock device */
-- gd = alloc_disk(1);
-+ gd = alloc_disk(0);
- if (!gd) {
- pr_err("UBI: block: alloc_disk failed\n");
- ret = -ENODEV;
-@@ -413,6 +413,7 @@ int ubiblock_create(struct ubi_volume_in
- goto out_put_disk;
- }
- gd->private_data = dev;
-+ gd->flags |= GENHD_FL_EXT_DEVT;
- sprintf(gd->disk_name, "ubiblock%d_%d", dev->ubi_num, dev->vol_id);
- set_capacity(gd, disk_capacity);
- dev->gd = gd;
---- a/block/partitions/efi.c
-+++ b/block/partitions/efi.c
-@@ -706,6 +706,9 @@ int efi_partition(struct parsed_partitio
- gpt_entry *ptes = NULL;
- u32 i;
- unsigned ssz = bdev_logical_block_size(state->bdev) / 512;
-+#ifdef CONFIG_FIT_PARTITION
-+ u32 extra_slot = 64;
-+#endif
-
- if (!find_valid_gpt(state, &gpt, &ptes) || !gpt || !ptes) {
- kfree(gpt);
-@@ -739,6 +742,11 @@ int efi_partition(struct parsed_partitio
- ARRAY_SIZE(ptes[i].partition_name));
- utf16_le_to_7bit(ptes[i].partition_name, label_max, info->volname);
- state->parts[i + 1].has_info = true;
-+#ifdef CONFIG_FIT_PARTITION
-+ /* If this is a U-Boot FIT volume it may have subpartitions */
-+ if (!efi_guidcmp(ptes[i].partition_type_guid, PARTITION_LINUX_FIT_GUID))
-+ (void) parse_fit_partitions(state, start * ssz, size * ssz, &extra_slot, 1);
-+#endif
- }
- kfree(ptes);
- kfree(gpt);
---- a/block/partitions/efi.h
-+++ b/block/partitions/efi.h
-@@ -52,6 +52,9 @@
- #define PARTITION_LINUX_LVM_GUID \
- EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \
- 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28)
-+#define PARTITION_LINUX_FIT_GUID \
-+ EFI_GUID( 0xcae9be83, 0xb15f, 0x49cc, \
-+ 0x86, 0x3f, 0x08, 0x1b, 0x74, 0x4a, 0x2d, 0x93)
-
- typedef struct _gpt_header {
- __le64 signature;
--- /dev/null
+From f9760b158f610b1792a222cc924073724c061bfb Mon Sep 17 00:00:00 2001
+From: Daniel Golle <daniel@makrotopia.org>
+Date: Wed, 7 Apr 2021 22:37:57 +0100
+Subject: [PATCH 1/2] mtd: super: don't reply on mtdblock device minor
+To: linux-mtd@lists.infradead.org
+Cc: Vignesh Raghavendra <vigneshr@ti.com>,
+ Richard Weinberger <richard@nod.at>,
+ Miquel Raynal <miquel.raynal@bootlin.com>,
+ David Woodhouse <dwmw2@infradead.org>
+
+For blktrans devices with partitions (ie. part_bits != 0) the
+assumption that the minor number of the mtdblock device matches
+the mtdnum doesn't hold true.
+Properly resolve mtd device from blktrans layer instead.
+
+Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+---
+ drivers/mtd/mtdsuper.c | 33 ++++++++++++++++++++++++++-------
+ 1 file changed, 26 insertions(+), 7 deletions(-)
+
+--- a/drivers/mtd/mtdsuper.c
++++ b/drivers/mtd/mtdsuper.c
+@@ -9,6 +9,7 @@
+ */
+
+ #include <linux/mtd/super.h>
++#include <linux/mtd/blktrans.h>
+ #include <linux/namei.h>
+ #include <linux/export.h>
+ #include <linux/ctype.h>
+@@ -121,7 +122,8 @@ int get_tree_mtd(struct fs_context *fc,
+ {
+ #ifdef CONFIG_BLOCK
+ struct block_device *bdev;
+- int ret, major;
++ struct mtd_blktrans_dev *blktrans_dev;
++ int ret, major, part_bits;
+ #endif
+ int mtdnr;
+
+@@ -169,21 +171,38 @@ int get_tree_mtd(struct fs_context *fc,
+ /* try the old way - the hack where we allowed users to mount
+ * /dev/mtdblock$(n) but didn't actually _use_ the blockdev
+ */
+- bdev = lookup_bdev(fc->source);
++ bdev = blkdev_get_by_path(fc->source, FMODE_READ, NULL);
+ if (IS_ERR(bdev)) {
+ ret = PTR_ERR(bdev);
+ errorf(fc, "MTD: Couldn't look up '%s': %d", fc->source, ret);
+ return ret;
+ }
+- pr_debug("MTDSB: lookup_bdev() returned 0\n");
++ pr_debug("MTDSB: blkdev_get_by_path() returned 0\n");
+
+ major = MAJOR(bdev->bd_dev);
+- mtdnr = MINOR(bdev->bd_dev);
+- bdput(bdev);
+
+- if (major == MTD_BLOCK_MAJOR)
+- return mtd_get_sb_by_nr(fc, mtdnr, fill_super);
++ if (major == MTD_BLOCK_MAJOR) {
++ if (!bdev->bd_disk) {
++ blkdev_put(bdev, FMODE_READ);
++ BUG();
++ return -EINVAL;
++ }
++
++ blktrans_dev = (struct mtd_blktrans_dev *)(bdev->bd_disk->private_data);
++ if (!blktrans_dev || !blktrans_dev->tr) {
++ blkdev_put(bdev, FMODE_READ);
++ BUG();
++ return -EINVAL;
++ }
++ mtdnr = blktrans_dev->devnum;
++ part_bits = blktrans_dev->tr->part_bits;
++ blkdev_put(bdev, FMODE_READ);
++ if (MINOR(bdev->bd_dev) != (mtdnr << part_bits))
++ return -EINVAL;
+
++ return mtd_get_sb_by_nr(fc, mtdnr, fill_super);
++ }
++ blkdev_put(bdev, FMODE_READ);
+ #endif /* CONFIG_BLOCK */
+
+ if (!(fc->sb_flags & SB_SILENT))
--- /dev/null
+From 0bccc3722bdd88e8ae995e77ef9f7b77ee4cbdee Mon Sep 17 00:00:00 2001
+From: Daniel Golle <daniel@makrotopia.org>
+Date: Wed, 7 Apr 2021 22:45:54 +0100
+Subject: [PATCH 2/2] mtd: blktrans: call add disks after mtd device
+To: linux-mtd@lists.infradead.org
+Cc: Vignesh Raghavendra <vigneshr@ti.com>,
+ Richard Weinberger <richard@nod.at>,
+ Miquel Raynal <miquel.raynal@bootlin.com>,
+ David Woodhouse <dwmw2@infradead.org>
+
+Calling device_add_disk while holding mtd_table_mutex leads
+to deadlock in case part_bits!=0 as block partition parsers
+will try to open the newly created disks, trying to acquire
+mutex once again.
+Move device_add_disk to additional function called after
+add partitions of an MTD device have been added and locks
+have been released.
+
+Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+---
+ drivers/mtd/mtd_blkdevs.c | 33 ++++++++++++++++++++++++++-------
+ drivers/mtd/mtdcore.c | 3 +++
+ include/linux/mtd/blktrans.h | 1 +
+ 3 files changed, 30 insertions(+), 7 deletions(-)
+
+--- a/drivers/mtd/mtd_blkdevs.c
++++ b/drivers/mtd/mtd_blkdevs.c
+@@ -457,13 +457,6 @@ int add_mtd_blktrans_dev(struct mtd_blkt
+ if (new->readonly)
+ set_disk_ro(gd, 1);
+
+- device_add_disk(&new->mtd->dev, gd, NULL);
+-
+- if (new->disk_attributes) {
+- ret = sysfs_create_group(&disk_to_dev(gd)->kobj,
+- new->disk_attributes);
+- WARN_ON(ret);
+- }
+ return 0;
+ error4:
+ kfree(new->tag_set);
+@@ -475,6 +468,32 @@ error1:
+ return ret;
+ }
+
++void register_mtd_blktrans_devs(struct mtd_info *mtd)
++{
++ struct mtd_blktrans_ops *tr;
++ struct mtd_blktrans_dev *dev, *next;
++ struct mtd_info *top_mtd;
++ int ret;
++
++ list_for_each_entry(tr, &blktrans_majors, list) {
++ list_for_each_entry_safe(dev, next, &tr->devs, list) {
++ top_mtd = dev->mtd;
++ while (top_mtd->parent)
++ top_mtd = top_mtd->parent;
++
++ if (mtd->index != top_mtd->index)
++ continue;
++
++ device_add_disk(&dev->mtd->dev, dev->disk, NULL);
++ if (dev->disk_attributes) {
++ ret = sysfs_create_group(&disk_to_dev(dev->disk)->kobj,
++ dev->disk_attributes);
++ WARN_ON(ret);
++ }
++ }
++ }
++}
++
+ int del_mtd_blktrans_dev(struct mtd_blktrans_dev *old)
+ {
+ unsigned long flags;
+--- a/drivers/mtd/mtdcore.c
++++ b/drivers/mtd/mtdcore.c
+@@ -32,6 +32,7 @@
+
+ #include <linux/mtd/mtd.h>
+ #include <linux/mtd/partitions.h>
++#include <linux/mtd/blktrans.h>
+
+ #include "mtdcore.h"
+
+@@ -858,6 +859,8 @@ int mtd_device_parse_register(struct mtd
+ register_reboot_notifier(&mtd->reboot_notifier);
+ }
+
++ register_mtd_blktrans_devs(mtd);
++
+ out:
+ if (ret && device_is_registered(&mtd->dev))
+ del_mtd_device(mtd);
+--- a/include/linux/mtd/blktrans.h
++++ b/include/linux/mtd/blktrans.h
+@@ -76,6 +76,7 @@ extern int deregister_mtd_blktrans(struc
+ extern int add_mtd_blktrans_dev(struct mtd_blktrans_dev *dev);
+ extern int del_mtd_blktrans_dev(struct mtd_blktrans_dev *dev);
+ extern int mtd_blktrans_cease_background(struct mtd_blktrans_dev *dev);
++extern void register_mtd_blktrans_devs(struct mtd_info *mtd);
+
+
+ #endif /* __MTD_TRANS_H__ */
--- /dev/null
+--- a/block/blk.h
++++ b/block/blk.h
+@@ -357,6 +357,7 @@ char *disk_name(struct gendisk *hd, int
+ #define ADDPART_FLAG_NONE 0
+ #define ADDPART_FLAG_RAID 1
+ #define ADDPART_FLAG_WHOLEDISK 2
++#define ADDPART_FLAG_ROOTDEV 4
+ void delete_partition(struct hd_struct *part);
+ int bdev_add_partition(struct block_device *bdev, int partno,
+ sector_t start, sector_t length);
+--- a/block/partitions/Kconfig
++++ b/block/partitions/Kconfig
+@@ -101,6 +101,13 @@ config ATARI_PARTITION
+ Say Y here if you would like to use hard disks under Linux which
+ were partitioned under the Atari OS.
+
++config FIT_PARTITION
++ bool "Flattened-Image-Tree (FIT) partition support" if PARTITION_ADVANCED
++ default n
++ help
++ Say Y here if your system needs to mount the filesystem part of
++ a Flattened-Image-Tree (FIT) image commonly used with Das U-Boot.
++
+ config IBM_PARTITION
+ bool "IBM disk label and partition support"
+ depends on PARTITION_ADVANCED && S390
+--- a/block/partitions/Makefile
++++ b/block/partitions/Makefile
+@@ -8,6 +8,7 @@ obj-$(CONFIG_ACORN_PARTITION) += acorn.o
+ obj-$(CONFIG_AMIGA_PARTITION) += amiga.o
+ obj-$(CONFIG_ATARI_PARTITION) += atari.o
+ obj-$(CONFIG_AIX_PARTITION) += aix.o
++obj-$(CONFIG_FIT_PARTITION) += fit.o
+ obj-$(CONFIG_CMDLINE_PARTITION) += cmdline.o
+ obj-$(CONFIG_MAC_PARTITION) += mac.o
+ obj-$(CONFIG_LDM_PARTITION) += ldm.o
+--- a/block/partitions/check.h
++++ b/block/partitions/check.h
+@@ -58,6 +58,7 @@ int amiga_partition(struct parsed_partit
+ int atari_partition(struct parsed_partitions *state);
+ int cmdline_partition(struct parsed_partitions *state);
+ int efi_partition(struct parsed_partitions *state);
++int fit_partition(struct parsed_partitions *state);
+ int ibm_partition(struct parsed_partitions *);
+ int karma_partition(struct parsed_partitions *state);
+ int ldm_partition(struct parsed_partitions *state);
+@@ -68,3 +69,5 @@ int sgi_partition(struct parsed_partitio
+ int sun_partition(struct parsed_partitions *state);
+ int sysv68_partition(struct parsed_partitions *state);
+ int ultrix_partition(struct parsed_partitions *state);
++
++int parse_fit_partitions(struct parsed_partitions *state, u64 start_sector, u64 nr_sectors, int *slot, int add_remain);
+--- a/block/partitions/core.c
++++ b/block/partitions/core.c
+@@ -10,6 +10,10 @@
+ #include <linux/vmalloc.h>
+ #include <linux/blktrace_api.h>
+ #include <linux/raid/detect.h>
++#ifdef CONFIG_FIT_PARTITION
++#include <linux/root_dev.h>
++#endif
++
+ #include "check.h"
+
+ static int (*check_part[])(struct parsed_partitions *) = {
+@@ -46,6 +50,9 @@ static int (*check_part[])(struct parsed
+ #ifdef CONFIG_EFI_PARTITION
+ efi_partition, /* this must come before msdos */
+ #endif
++#ifdef CONFIG_FIT_PARTITION
++ fit_partition,
++#endif
+ #ifdef CONFIG_SGI_PARTITION
+ sgi_partition,
+ #endif
+@@ -215,6 +222,18 @@ static ssize_t part_discard_alignment_sh
+ p->start_sect));
+ }
+
++static ssize_t part_name_show(struct device *dev,
++ struct device_attribute *attr, char *buf)
++{
++ struct hd_struct *p = dev_to_part(dev);
++
++ if (p->info && p->info->volname)
++ return sprintf(buf, "%s\n", p->info->volname);
++
++ buf[0] = '\0';
++ return 0;
++}
++
+ static DEVICE_ATTR(partition, 0444, part_partition_show, NULL);
+ static DEVICE_ATTR(start, 0444, part_start_show, NULL);
+ static DEVICE_ATTR(size, 0444, part_size_show, NULL);
+@@ -223,6 +242,7 @@ static DEVICE_ATTR(alignment_offset, 044
+ static DEVICE_ATTR(discard_alignment, 0444, part_discard_alignment_show, NULL);
+ static DEVICE_ATTR(stat, 0444, part_stat_show, NULL);
+ static DEVICE_ATTR(inflight, 0444, part_inflight_show, NULL);
++static DEVICE_ATTR(name, 0444, part_name_show, NULL);
+ #ifdef CONFIG_FAIL_MAKE_REQUEST
+ static struct device_attribute dev_attr_fail =
+ __ATTR(make-it-fail, 0644, part_fail_show, part_fail_store);
+@@ -237,6 +257,7 @@ static struct attribute *part_attrs[] =
+ &dev_attr_discard_alignment.attr,
+ &dev_attr_stat.attr,
+ &dev_attr_inflight.attr,
++ &dev_attr_name.attr,
+ #ifdef CONFIG_FAIL_MAKE_REQUEST
+ &dev_attr_fail.attr,
+ #endif
+@@ -694,6 +715,11 @@ static bool blk_add_partition(struct gen
+ (state->parts[p].flags & ADDPART_FLAG_RAID))
+ md_autodetect_dev(part_to_dev(part)->devt);
+
++#ifdef CONFIG_FIT_PARTITION
++ if ((state->parts[p].flags & ADDPART_FLAG_ROOTDEV) && ROOT_DEV == 0)
++ ROOT_DEV = part_to_dev(part)->devt;
++#endif
++
+ return true;
+ }
+
+--- a/drivers/mtd/ubi/block.c
++++ b/drivers/mtd/ubi/block.c
+@@ -396,7 +396,11 @@ int ubiblock_create(struct ubi_volume_in
+ dev->leb_size = vi->usable_leb_size;
+
+ /* Initialize the gendisk of this ubiblock device */
++#ifdef CONFIG_FIT_PARTITION
++ gd = alloc_disk(0);
++#else
+ gd = alloc_disk(1);
++#endif
+ if (!gd) {
+ pr_err("UBI: block: alloc_disk failed\n");
+ ret = -ENODEV;
+@@ -413,6 +417,9 @@ int ubiblock_create(struct ubi_volume_in
+ goto out_put_disk;
+ }
+ gd->private_data = dev;
++#ifdef CONFIG_FIT_PARTITION
++ gd->flags |= GENHD_FL_EXT_DEVT;
++#endif
+ sprintf(gd->disk_name, "ubiblock%d_%d", dev->ubi_num, dev->vol_id);
+ set_capacity(gd, disk_capacity);
+ dev->gd = gd;
+--- a/block/partitions/efi.c
++++ b/block/partitions/efi.c
+@@ -706,6 +706,9 @@ int efi_partition(struct parsed_partitio
+ gpt_entry *ptes = NULL;
+ u32 i;
+ unsigned ssz = bdev_logical_block_size(state->bdev) / 512;
++#ifdef CONFIG_FIT_PARTITION
++ u32 extra_slot = 64;
++#endif
+
+ if (!find_valid_gpt(state, &gpt, &ptes) || !gpt || !ptes) {
+ kfree(gpt);
+@@ -739,6 +742,11 @@ int efi_partition(struct parsed_partitio
+ ARRAY_SIZE(ptes[i].partition_name));
+ utf16_le_to_7bit(ptes[i].partition_name, label_max, info->volname);
+ state->parts[i + 1].has_info = true;
++#ifdef CONFIG_FIT_PARTITION
++ /* If this is a U-Boot FIT volume it may have subpartitions */
++ if (!efi_guidcmp(ptes[i].partition_type_guid, PARTITION_LINUX_FIT_GUID))
++ (void) parse_fit_partitions(state, start * ssz, size * ssz, &extra_slot, 1);
++#endif
+ }
+ kfree(ptes);
+ kfree(gpt);
+--- a/block/partitions/efi.h
++++ b/block/partitions/efi.h
+@@ -52,6 +52,9 @@
+ #define PARTITION_LINUX_LVM_GUID \
+ EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \
+ 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28)
++#define PARTITION_LINUX_FIT_GUID \
++ EFI_GUID( 0xcae9be83, 0xb15f, 0x49cc, \
++ 0x86, 0x3f, 0x08, 0x1b, 0x74, 0x4a, 0x2d, 0x93)
+
+ typedef struct _gpt_header {
+ __le64 signature;
+--- a/drivers/mtd/mtdblock.c
++++ b/drivers/mtd/mtdblock.c
+@@ -334,7 +334,11 @@ static void mtdblock_remove_dev(struct m
+ static struct mtd_blktrans_ops mtdblock_tr = {
+ .name = "mtdblock",
+ .major = MTD_BLOCK_MAJOR,
++#ifdef CONFIG_FIT_PARTITION
++ .part_bits = 1,
++#else
+ .part_bits = 0,
++#endif
+ .blksize = 512,
+ .open = mtdblock_open,
+ .flush = mtdblock_flush,
+--- a/drivers/mtd/mtd_blkdevs.c
++++ b/drivers/mtd/mtd_blkdevs.c
+@@ -407,18 +407,8 @@ int add_mtd_blktrans_dev(struct mtd_blkt
+ gd->first_minor = (new->devnum) << tr->part_bits;
+ gd->fops = &mtd_block_ops;
+
+- if (tr->part_bits)
+- if (new->devnum < 26)
+- snprintf(gd->disk_name, sizeof(gd->disk_name),
+- "%s%c", tr->name, 'a' + new->devnum);
+- else
+- snprintf(gd->disk_name, sizeof(gd->disk_name),
+- "%s%c%c", tr->name,
+- 'a' - 1 + new->devnum / 26,
+- 'a' + new->devnum % 26);
+- else
+- snprintf(gd->disk_name, sizeof(gd->disk_name),
+- "%s%d", tr->name, new->devnum);
++ snprintf(gd->disk_name, sizeof(gd->disk_name),
++ "%s%d", tr->name, new->devnum);
+
+ set_capacity(gd, ((u64)new->size * tr->blksize) >> 9);
+
projects / openwrt / staging / mkresin.git / commitdiff