From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: [PATCH] MTD: expose subpage size via sysfs From: Artem Bityutskiy To: David Woodhouse Content-Type: text/plain; charset="UTF-8" Date: Fri, 17 Apr 2009 18:11:36 +0300 Message-Id: <1239981096.3390.300.camel@localhost.localdomain> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Cc: linux-mtd Reply-To: dedekind@infradead.org List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Artem Bityutskiy Subject: [PATCH] MTD: expose subpage size via sysfs MTD has got sysfs support in 2.6.30-rc1. But subpage size is not exposed there - do this. Signed-off-by: Artem Bityutskiy --- drivers/mtd/mtdcore.c | 12 ++++++++++++ 1 files changed, 12 insertions(+), 0 deletions(-) diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index fdd6ae8..ae6f15e 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -132,6 +132,17 @@ static ssize_t mtd_writesize_show(struct device *dev, } static DEVICE_ATTR(writesize, S_IRUGO, mtd_writesize_show, NULL); +static ssize_t mtd_subpage_size_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mtd_info *mtd = dev_to_mtd(dev); + unsigned int subpage_size = mtd->writesize >> mtd->subpage_sft; + + return snprintf(buf, PAGE_SIZE, "%u\n", subpage_size); + +} +static DEVICE_ATTR(subpage_size, S_IRUGO, mtd_subpage_size_show, NULL); + static ssize_t mtd_oobsize_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -169,6 +180,7 @@ static struct attribute *mtd_attrs[] = { &dev_attr_size.attr, &dev_attr_erasesize.attr, &dev_attr_writesize.attr, + &dev_attr_subpage_size.attr, &dev_attr_oobsize.attr, &dev_attr_numeraseregions.attr, &dev_attr_name.attr, -- 1.6.0.6 -- Best regards, Artem Bityutskiy (Битюцкий Артём)