From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S942720AbcJ0TPD (ORCPT ); Thu, 27 Oct 2016 15:15:03 -0400 Received: from skprod3.natinst.com ([130.164.80.24]:55113 "EHLO ni.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S934834AbcJ0TO6 (ORCPT ); Thu, 27 Oct 2016 15:14:58 -0400 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> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1477595642-11454-1-git-send-email-zach.brown@ni.com> References: <1477595642-11454-1-git-send-email-zach.brown@ni.com> X-MIMETrack: Itemize by SMTP Server on US-AUS-MGWOut2/AUS/H/NIC(Release 8.5.3FP6 HF1218|December 12, 2014) at 10/27/2016 02:13:57 PM, Serialize by Router on US-AUS-MGWOut2/AUS/H/NIC(Release 8.5.3FP6 HF1218|December 12, 2014) at 10/27/2016 02:13:57 PM, Serialize complete at 10/27/2016 02:13:57 PM MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-10-27_12:,, signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=4 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1609300000 definitions=main-1610270314 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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