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authorHuang Shijie <b32955@freescale.com>2013-08-16 10:10:05 +0800
committerDavid Woodhouse <David.Woodhouse@intel.com>2013-08-30 21:37:56 +0100
commitbf977e3f158dc949fd6e1e4195f80d42232cb5fa (patch)
treefa78cc26e553138eabf84015cc4f8a65925226c3 /drivers/mtd
parentc41a0582d59e3bc41978ac4a23e457d86ac7365f (diff)
downloadop-kernel-dev-bf977e3f158dc949fd6e1e4195f80d42232cb5fa.zip
op-kernel-dev-bf977e3f158dc949fd6e1e4195f80d42232cb5fa.tar.gz
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@freescale.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/mtdcore.c11
1 files changed, 11 insertions, 0 deletions
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,
};
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