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authorXiaolei Li <xiaolei.li@mediatek.com>2018-04-02 16:20:10 +0800
committerBoris Brezillon <boris.brezillon@bootlin.com>2018-04-22 20:07:06 +0200
commit7cc9aa669a5119a8d70b22c57779d1decd4d0d62 (patch)
treec48b958a576e6193061c2aa9b2a6400ecf1c35aa /drivers/mtd/mtdcore.c
parentc3c9a2c4b94f2c92132298b705a6f5f9dc1ccd3f (diff)
mtd: Add sysfs attribute for mtd OOB available size
Expose mtd OOB available size by sysfs file. Then users can get available OOB size by accessing /sys/class/mtd/mtdX/oobavail. Signed-off-by: Xiaolei Li <xiaolei.li@mediatek.com> Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Diffstat (limited to 'drivers/mtd/mtdcore.c')
-rw-r--r--drivers/mtd/mtdcore.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index 807d17d863b3..adf18b0d22b5 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -210,6 +210,15 @@ static ssize_t mtd_oobsize_show(struct device *dev,
}
static DEVICE_ATTR(oobsize, S_IRUGO, mtd_oobsize_show, NULL);
+static ssize_t mtd_oobavail_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct mtd_info *mtd = dev_get_drvdata(dev);
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", mtd->oobavail);
+}
+static DEVICE_ATTR(oobavail, S_IRUGO, mtd_oobavail_show, NULL);
+
static ssize_t mtd_numeraseregions_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -327,6 +336,7 @@ static struct attribute *mtd_attrs[] = {
&dev_attr_writesize.attr,
&dev_attr_subpagesize.attr,
&dev_attr_oobsize.attr,
+ &dev_attr_oobavail.attr,
&dev_attr_numeraseregions.attr,
&dev_attr_name.attr,
&dev_attr_ecc_strength.attr,