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mtd: expose ecc_strength through sysfs
ecc_strength element of struct mtd_info is exposed as a read-only variable in sysfs. Signed-off-by: Mike Dunn <mikedunn@newsguy.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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@ -123,3 +123,15 @@ Description:
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half page, or a quarter page).
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half page, or a quarter page).
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In the case of ECC NOR, it is the ECC block size.
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In the case of ECC NOR, it is the ECC block size.
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What: /sys/class/mtd/mtdX/ecc_strength
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Date: April 2012
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KernelVersion: 3.4
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Contact: linux-mtd@lists.infradead.org
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Description:
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Maximum number of bit errors that the device is capable of
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correcting within each region covering an ecc step. This will
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always be a non-negative integer. Note that some devices will
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have multiple ecc steps within each writesize region.
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In the case of devices lacking any ECC capability, it is 0.
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@ -250,6 +250,15 @@ static ssize_t mtd_name_show(struct device *dev,
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}
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}
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static DEVICE_ATTR(name, S_IRUGO, mtd_name_show, NULL);
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static DEVICE_ATTR(name, S_IRUGO, mtd_name_show, NULL);
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static ssize_t mtd_ecc_strength_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct mtd_info *mtd = dev_get_drvdata(dev);
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return snprintf(buf, PAGE_SIZE, "%u\n", mtd->ecc_strength);
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}
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static DEVICE_ATTR(ecc_strength, S_IRUGO, mtd_ecc_strength_show, NULL);
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static struct attribute *mtd_attrs[] = {
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static struct attribute *mtd_attrs[] = {
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&dev_attr_type.attr,
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&dev_attr_type.attr,
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&dev_attr_flags.attr,
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&dev_attr_flags.attr,
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@ -260,6 +269,7 @@ static struct attribute *mtd_attrs[] = {
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&dev_attr_oobsize.attr,
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&dev_attr_oobsize.attr,
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&dev_attr_numeraseregions.attr,
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&dev_attr_numeraseregions.attr,
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&dev_attr_name.attr,
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&dev_attr_name.attr,
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&dev_attr_ecc_strength.attr,
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NULL,
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NULL,
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};
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};
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