From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 3/3] mtd: Add subpagesize to mtd_info_user
Date: Fri, 20 Dec 2013 15:10:20 +0100 [thread overview]
Message-ID: <1387548620-26893-4-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1387548620-26893-1-git-send-email-s.hauer@pengutronix.de>
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>
---
drivers/mtd/core.c | 1 +
fs/devfs-core.c | 1 +
include/linux/mtd/mtd-abi.h | 1 +
lib/libmtd.c | 2 +-
4 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/mtd/core.c b/drivers/mtd/core.c
index fc2ac00..6db1c6d 100644
--- a/drivers/mtd/core.c
+++ b/drivers/mtd/core.c
@@ -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;
diff --git a/fs/devfs-core.c b/fs/devfs-core.c
index a92d434..44f0169 100644
--- a/fs/devfs-core.c
+++ b/fs/devfs-core.c
@@ -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;
diff --git a/include/linux/mtd/mtd-abi.h b/include/linux/mtd/mtd-abi.h
index fa8e36f..11d51e2 100644
--- a/include/linux/mtd/mtd-abi.h
+++ b/include/linux/mtd/mtd-abi.h
@@ -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 {
diff --git a/lib/libmtd.c b/lib/libmtd.c
index eecc760..1606b87 100644
--- a/lib/libmtd.c
+++ b/lib/libmtd.c
@@ -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);
--
1.8.5.1
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prev parent reply other threads:[~2013-12-20 14:10 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-20 14:10 mtd/UBI fixes Sascha Hauer
2013-12-20 14:10 ` [PATCH 1/3] mtd: fix wrong return values in cdev read Sascha Hauer
2013-12-20 14:10 ` [PATCH 2/3] mtd: fix mtd_read return value Sascha Hauer
2013-12-20 14:10 ` Sascha Hauer [this message]
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