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authorArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2007-12-26 13:46:46 +0200
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2007-12-26 19:15:17 +0200
commitb6b76ba466bbd47397efad0fdaeaa5ebf7d462c7 (patch)
tree06af1b32c201abdc87bb852c5ba10c8acccaf9bc /drivers/mtd/ubi
parentd1f3dd6cc00f5bf744118fb2820ecdf09a1f4b73 (diff)
UBI: add mtd_num sysfs attribute
Expose number or the underlying MTD device in sysfs. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'drivers/mtd/ubi')
-rw-r--r--drivers/mtd/ubi/build.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index 0ed8105f9c1..5098e6d5709 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -122,6 +122,8 @@ static struct device_attribute dev_min_io_size =
__ATTR(min_io_size, S_IRUGO, dev_attribute_show, NULL);
static struct device_attribute dev_bgt_enabled =
__ATTR(bgt_enabled, S_IRUGO, dev_attribute_show, NULL);
+static struct device_attribute dev_mtd_num =
+ __ATTR(mtd_num, S_IRUGO, dev_attribute_show, NULL);
/**
* ubi_get_device - get UBI device.
@@ -257,8 +259,10 @@ static ssize_t dev_attribute_show(struct device *dev,
ret = sprintf(buf, "%d\n", ubi->min_io_size);
else if (attr == &dev_bgt_enabled)
ret = sprintf(buf, "%d\n", ubi->thread_enabled);
+ else if (attr == &dev_mtd_num)
+ ret = sprintf(buf, "%d\n", ubi->mtd->index);
else
- BUG();
+ ret = -EINVAL;
ubi_put_device(ubi);
return ret;
@@ -314,6 +318,9 @@ static int ubi_sysfs_init(struct ubi_device *ubi)
if (err)
return err;
err = device_create_file(&ubi->dev, &dev_bgt_enabled);
+ if (err)
+ return err;
+ err = device_create_file(&ubi->dev, &dev_mtd_num);
return err;
}
@@ -323,6 +330,7 @@ static int ubi_sysfs_init(struct ubi_device *ubi)
*/
static void ubi_sysfs_close(struct ubi_device *ubi)
{
+ device_remove_file(&ubi->dev, &dev_mtd_num);
device_remove_file(&ubi->dev, &dev_bgt_enabled);
device_remove_file(&ubi->dev, &dev_min_io_size);
device_remove_file(&ubi->dev, &dev_max_vol_count);