mtd: add a new sys node to show the ecc step size

[Linux-MTD Mailing List]

Gitweb:     http://git.infradead.org/?p=mtd-2.6.git;a=commit;h=bf977e3f158dc949fd6e1e4195f80d42232cb5fa
Commit:     bf977e3f158dc949fd6e1e4195f80d42232cb5fa
Parent:     c41a0582d59e3bc41978ac4a23e457d86ac7365f
Author:     Huang Shijie <b32955 at freescale.com>
AuthorDate: Fri Aug 16 10:10:05 2013 +0800
Committer:  David Woodhouse <David.Woodhouse at intel.com>
CommitDate: Fri Aug 30 21:37:56 2013 +0100

    mtd: add a new sys node to show the ecc step size
    
    Add a new sys node to show the ecc step size.
    The application then can uses this node to get the ecc step
    size.
    
    Signed-off-by: Huang Shijie <b32955 at freescale.com>
    Signed-off-by: Artem Bityutskiy <artem.bityutskiy at linux.intel.com>
    Signed-off-by: Brian Norris <computersforpeace at gmail.com>
    Signed-off-by: David Woodhouse <David.Woodhouse at intel.com>
---
 drivers/mtd/mtdcore.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index 048c823..5e14d54 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -285,6 +285,16 @@ static DEVICE_ATTR(bitflip_threshold, S_IRUGO | S_IWUSR,
 		   mtd_bitflip_threshold_show,
 		   mtd_bitflip_threshold_store);
 
+static ssize_t mtd_ecc_step_size_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->ecc_step_size);
+
+}
+static DEVICE_ATTR(ecc_step_size, S_IRUGO, mtd_ecc_step_size_show, NULL);
+
 static struct attribute *mtd_attrs[] = {
 	&dev_attr_type.attr,
 	&dev_attr_flags.attr,
@@ -296,6 +306,7 @@ static struct attribute *mtd_attrs[] = {
 	&dev_attr_numeraseregions.attr,
 	&dev_attr_name.attr,
 	&dev_attr_ecc_strength.attr,
+	&dev_attr_ecc_step_size.attr,
 	&dev_attr_bitflip_threshold.attr,
 	NULL,
 };