From 7cc9aa669a5119a8d70b22c57779d1decd4d0d62 Mon Sep 17 00:00:00 2001 From: Xiaolei Li Date: Mon, 2 Apr 2018 16:20:10 +0800 Subject: 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 Signed-off-by: Boris Brezillon --- drivers/mtd/mtdcore.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'drivers/mtd') 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, -- cgit v1.2.3-58-ga151