From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from skprod3.natinst.com ([130.164.80.24] helo=ni.com) by bombadil.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1bzq8c-0004Cy-7T for linux-mtd@lists.infradead.org; Thu, 27 Oct 2016 19:14:56 +0000 From: Zach Brown To: CC: , , , , , Subject: [RESEND PATCH v2 1/3] mtd: introduce function max_bad_blocks Date: Thu, 27 Oct 2016 14:14:00 -0500 Message-ID: <1477595642-11454-2-git-send-email-zach.brown@ni.com> In-Reply-To: <1477595642-11454-1-git-send-email-zach.brown@ni.com> References: <1477595642-11454-1-git-send-email-zach.brown@ni.com> MIME-Version: 1.0 Content-Type: text/plain List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Jeff Westfahl If implemented, 'max_bad_blocks' returns the maximum number of bad blocks to reserve for an MTD. An implementation for NAND is coming soon. Signed-off-by: Jeff Westfahl Signed-off-by: Zach Brown --- drivers/mtd/mtdpart.c | 12 ++++++++++++ include/linux/mtd/mtd.h | 1 + 2 files changed, 13 insertions(+) diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index fccdd49..565f0dd 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -349,6 +349,16 @@ static const struct mtd_ooblayout_ops part_ooblayout_ops = { .free = part_ooblayout_free, }; +static int part_max_bad_blocks(struct mtd_info *mtd, loff_t ofs, size_t len) +{ + struct mtd_part *part = mtd_to_part(mtd); + + if ((len + ofs) > mtd->size) + return -EINVAL; + return part->master->_max_bad_blocks(part->master, + ofs + part->offset, len); +} + static inline void free_partition(struct mtd_part *p) { kfree(p->mtd.name); @@ -481,6 +491,8 @@ static struct mtd_part *allocate_partition(struct mtd_info *master, if (master->_put_device) slave->mtd._put_device = part_put_device; + if (master->_max_bad_blocks) + slave->mtd._max_bad_blocks = part_max_bad_blocks; slave->mtd._erase = part_erase; slave->master = master; slave->offset = part->offset; diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 13f8052..bd277eb 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -322,6 +322,7 @@ struct mtd_info { int (*_block_isreserved) (struct mtd_info *mtd, loff_t ofs); int (*_block_isbad) (struct mtd_info *mtd, loff_t ofs); int (*_block_markbad) (struct mtd_info *mtd, loff_t ofs); + int (*_max_bad_blocks) (struct mtd_info *mtd, loff_t ofs, size_t len); int (*_suspend) (struct mtd_info *mtd); void (*_resume) (struct mtd_info *mtd); void (*_reboot) (struct mtd_info *mtd); -- 2.7.4