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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-10 09:31:45 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-10 09:31:45 -0800
commitfc1495bf99de6f65066b3234813180301ff8b693 (patch)
tree4858db540f3c57f6f998383056ad4714b969660c /drivers/mtd/ubi
parent5476ffd2b78f06cce31a57f8611162918fe1ae3a (diff)
parentb38882f5c066dc681679e90f1903eda323e605b1 (diff)
Merge git://git.infradead.org/ubifs-2.6
* git://git.infradead.org/ubifs-2.6: UBIFS: fix return code in check_leaf UBI: flush wl before clearing update marker MAINTAINERS: change e-mail of Artem Bityutskiy UBIFS: remove manual O_SYNC handling UBIFS: support mounting of UBI volume character devices UBI: Add ubi_open_volume_path
Diffstat (limited to 'drivers/mtd/ubi')
-rw-r--r--drivers/mtd/ubi/kapi.c40
-rw-r--r--drivers/mtd/ubi/upd.c20
2 files changed, 51 insertions, 9 deletions
diff --git a/drivers/mtd/ubi/kapi.c b/drivers/mtd/ubi/kapi.c
index 88a72e9c8be..277786ebaa2 100644
--- a/drivers/mtd/ubi/kapi.c
+++ b/drivers/mtd/ubi/kapi.c
@@ -22,6 +22,8 @@
#include <linux/module.h>
#include <linux/err.h>
+#include <linux/namei.h>
+#include <linux/fs.h>
#include <asm/div64.h>
#include "ubi.h"
@@ -280,6 +282,44 @@ struct ubi_volume_desc *ubi_open_volume_nm(int ubi_num, const char *name,
EXPORT_SYMBOL_GPL(ubi_open_volume_nm);
/**
+ * ubi_open_volume_path - open UBI volume by its character device node path.
+ * @pathname: volume character device node path
+ * @mode: open mode
+ *
+ * This function is similar to 'ubi_open_volume()', but opens a volume the path
+ * to its character device node.
+ */
+struct ubi_volume_desc *ubi_open_volume_path(const char *pathname, int mode)
+{
+ int error, ubi_num, vol_id;
+ struct ubi_volume_desc *ret;
+ struct inode *inode;
+ struct path path;
+
+ dbg_gen("open volume %s, mode %d", pathname, mode);
+
+ if (!pathname || !*pathname)
+ return ERR_PTR(-EINVAL);
+
+ error = kern_path(pathname, LOOKUP_FOLLOW, &path);
+ if (error)
+ return ERR_PTR(error);
+
+ inode = path.dentry->d_inode;
+ ubi_num = ubi_major2num(imajor(inode));
+ vol_id = iminor(inode) - 1;
+
+ if (vol_id >= 0 && ubi_num >= 0)
+ ret = ubi_open_volume(ubi_num, vol_id, mode);
+ else
+ ret = ERR_PTR(-ENODEV);
+
+ path_put(&path);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(ubi_open_volume_path);
+
+/**
* ubi_close_volume - close UBI volume.
* @desc: volume descriptor
*/
diff --git a/drivers/mtd/ubi/upd.c b/drivers/mtd/ubi/upd.c
index 74fdc40c862..c1d7b880c79 100644
--- a/drivers/mtd/ubi/upd.c
+++ b/drivers/mtd/ubi/upd.c
@@ -147,12 +147,14 @@ int ubi_start_update(struct ubi_device *ubi, struct ubi_volume *vol,
}
if (bytes == 0) {
+ err = ubi_wl_flush(ubi);
+ if (err)
+ return err;
+
err = clear_update_marker(ubi, vol, 0);
if (err)
return err;
- err = ubi_wl_flush(ubi);
- if (!err)
- vol->updating = 0;
+ vol->updating = 0;
}
vol->upd_buf = vmalloc(ubi->leb_size);
@@ -362,16 +364,16 @@ int ubi_more_update_data(struct ubi_device *ubi, struct ubi_volume *vol,
ubi_assert(vol->upd_received <= vol->upd_bytes);
if (vol->upd_received == vol->upd_bytes) {
+ err = ubi_wl_flush(ubi);
+ if (err)
+ return err;
/* The update is finished, clear the update marker */
err = clear_update_marker(ubi, vol, vol->upd_bytes);
if (err)
return err;
- err = ubi_wl_flush(ubi);
- if (err == 0) {
- vol->updating = 0;
- err = to_write;
- vfree(vol->upd_buf);
- }
+ vol->updating = 0;
+ err = to_write;
+ vfree(vol->upd_buf);
}
return err;