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mtd: Add subpagesize to mtd_info_user 

ubiformat needs the subpagesize to work correctly. The kernel uses
sysfs to pass the subpagesize, but in barebox we have the possibility
to extend struct mtd_info_user. Add a corresponding field and use it
in ubiformat.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2013-12-20 13:00:10 +01:00
parent 080a4e9c9b
commit d7fe5e2263
4 changed files with 4 additions and 1 deletions
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1
drivers/mtd/core.c
View File

@ -236,6 +236,7 @@ int mtd_ioctl(struct cdev *cdev, int request, void *buf)
user->erasesize = mtd->erasesize;
user->writesize = mtd->writesize;
user->oobsize = mtd->oobsize;
user->subpagesize = mtd->writesize >> mtd->subpage_sft;
user->mtd = mtd;
/* The below fields are obsolete */
user->ecctype = -1;

1
fs/devfs-core.c
View File

@ -171,6 +171,7 @@ static int partition_ioctl(struct cdev *cdev, int request, void *buf)
user->erasesize = cdev->mtd->erasesize;
user->writesize = cdev->mtd->writesize;
user->oobsize = cdev->mtd->oobsize;
user->subpagesize = cdev->mtd->writesize >> cdev->mtd->subpage_sft;
user->mtd = cdev->mtd;
/* The below fields are obsolete */
user->ecctype = -1;

1
include/linux/mtd/mtd-abi.h
View File

@ -82,6 +82,7 @@ struct mtd_info_user {
uint32_t ecctype;
uint32_t eccsize;
struct mtd_info *mtd;
uint32_t subpagesize;
};
struct region_info_user {

2
lib/libmtd.c
View File

@ -308,6 +308,7 @@ int mtd_get_dev_info(const char *node, struct mtd_dev_info *mtd)
mtd->eb_size = ui.erasesize;
mtd->min_io_size = ui.writesize;
mtd->oob_size = ui.oobsize;
mtd->subpage_size = ui.subpagesize;
if (mtd->min_io_size <= 0) {
errmsg("%s has insane min. I/O unit size %d",
@ -356,7 +357,6 @@ int mtd_get_dev_info(const char *node, struct mtd_dev_info *mtd)
if (ui.flags & MTD_WRITEABLE)
mtd->writable = 1;
mtd->subpage_size = mtd->min_io_size;
close(fd);