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UBI: add mtd_num sysfs attribute

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Expose number or the underlying MTD device in sysfs.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
This commit is contained in:
Artem Bityutskiy 2007-12-26 13:46:46 +02:00
parent d1f3dd6cc0
commit b6b76ba466
1 changed files with 9 additions and 1 deletions
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10
drivers/mtd/ubi/build.c
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@ -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);