mtd: introduce mtd_can_have_bb helper
Linux-MTD Mailing List
linux-mtd at lists.infradead.org
Mon Jan 9 13:59:17 EST 2012
Gitweb: http://git.infradead.org/?p=mtd-2.6.git;a=commit;h=8f461a730242c528ca221948edceca49266a3ffb
Commit: 8f461a730242c528ca221948edceca49266a3ffb
Parent: 079c985e7a6f4ce60f931cebfdd5ee3c38347e31
Author: Artem Bityutskiy <artem.bityutskiy at linux.intel.com>
AuthorDate: Mon Jan 2 13:48:54 2012 +0200
Committer: David Woodhouse <David.Woodhouse at intel.com>
CommitDate: Mon Jan 9 18:26:24 2012 +0000
mtd: introduce mtd_can_have_bb helper
This patch introduces new 'mtd_can_have_bb()' helper function which checks
whether the flash can have bad eraseblocks. Then it changes all the
direct 'mtd->block_isbad' use cases with 'mtd_can_have_bb()'.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy at linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse at intel.com>
---
drivers/mtd/mtdchar.c | 5 +----
drivers/mtd/mtdconcat.c | 2 +-
drivers/mtd/mtdoops.c | 4 ++--
drivers/mtd/mtdswap.c | 4 ++--
drivers/mtd/nftlcore.c | 2 +-
drivers/mtd/redboot.c | 4 ++--
drivers/mtd/tests/mtd_readtest.c | 3 +--
drivers/mtd/tests/mtd_speedtest.c | 3 +--
drivers/mtd/tests/mtd_stresstest.c | 3 +--
drivers/mtd/tests/mtd_torturetest.c | 2 +-
drivers/mtd/ubi/build.c | 2 +-
include/linux/mtd/mtd.h | 7 +++++++
12 files changed, 21 insertions(+), 20 deletions(-)
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index 92da621..64efcbf 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -867,10 +867,7 @@ static int mtdchar_ioctl(struct file *file, u_int cmd, u_long arg)
if (copy_from_user(&offs, argp, sizeof(loff_t)))
return -EFAULT;
- if (!mtd->block_isbad)
- ret = -EOPNOTSUPP;
- else
- return mtd_block_isbad(mtd, offs);
+ return mtd_block_isbad(mtd, offs);
break;
}
diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c
index aaafb5e..fbf3cb1 100644
--- a/drivers/mtd/mtdconcat.c
+++ b/drivers/mtd/mtdconcat.c
@@ -647,7 +647,7 @@ static int concat_block_isbad(struct mtd_info *mtd, loff_t ofs)
struct mtd_concat *concat = CONCAT(mtd);
int i, res = 0;
- if (!concat->subdev[0]->block_isbad)
+ if (!mtd_can_have_bb(concat->subdev[0]))
return res;
if (ofs > mtd->size)
diff --git a/drivers/mtd/mtdoops.c b/drivers/mtd/mtdoops.c
index c8540b8..a4c8f67 100644
--- a/drivers/mtd/mtdoops.c
+++ b/drivers/mtd/mtdoops.c
@@ -169,7 +169,7 @@ static void mtdoops_workfunc_erase(struct work_struct *work)
cxt->nextpage = 0;
}
- while (mtd->block_isbad) {
+ while (mtd_can_have_bb(mtd)) {
ret = mtd_block_isbad(mtd, cxt->nextpage * record_size);
if (!ret)
break;
@@ -257,7 +257,7 @@ static void find_next_position(struct mtdoops_context *cxt)
size_t retlen;
for (page = 0; page < cxt->oops_pages; page++) {
- if (mtd->block_isbad &&
+ if (mtd_can_have_bb(mtd) &&
mtd_block_isbad(mtd, page * record_size))
continue;
/* Assume the page is used */
diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c
index fe4426c..3fc8cb2 100644
--- a/drivers/mtd/mtdswap.c
+++ b/drivers/mtd/mtdswap.c
@@ -343,7 +343,7 @@ static int mtdswap_read_markers(struct mtdswap_dev *d, struct swap_eb *eb)
offset = mtdswap_eb_offset(d, eb);
/* Check first if the block is bad. */
- if (d->mtd->block_isbad && mtd_block_isbad(d->mtd, offset))
+ if (mtd_can_have_bb(d->mtd) && mtd_block_isbad(d->mtd, offset))
return MTDSWAP_SCANNED_BAD;
ops.ooblen = 2 * d->mtd->ecclayout->oobavail;
@@ -1058,7 +1058,7 @@ static unsigned int mtdswap_badblocks(struct mtd_info *mtd, uint64_t size)
badcnt = 0;
- if (mtd->block_isbad)
+ if (mtd_can_have_bb(mtd))
for (offset = 0; offset < size; offset += mtd->erasesize)
if (mtd_block_isbad(mtd, offset))
badcnt++;
diff --git a/drivers/mtd/nftlcore.c b/drivers/mtd/nftlcore.c
index 8847e60..a75382a 100644
--- a/drivers/mtd/nftlcore.c
+++ b/drivers/mtd/nftlcore.c
@@ -56,7 +56,7 @@ static void nftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
if (memcmp(mtd->name, "DiskOnChip", 10))
return;
- if (!mtd->block_isbad) {
+ if (!mtd_can_have_bb(mtd)) {
printk(KERN_ERR
"NFTL no longer supports the old DiskOnChip drivers loaded via docprobe.\n"
"Please use the new diskonchip driver under the NAND subsystem.\n");
diff --git a/drivers/mtd/redboot.c b/drivers/mtd/redboot.c
index 09bb81e..48970c1 100644
--- a/drivers/mtd/redboot.c
+++ b/drivers/mtd/redboot.c
@@ -78,7 +78,7 @@ static int parse_redboot_partitions(struct mtd_info *master,
if ( directory < 0 ) {
offset = master->size + directory * master->erasesize;
- while (master->block_isbad &&
+ while (mtd_can_have_bb(master) &&
mtd_block_isbad(master, offset)) {
if (!offset) {
nogood:
@@ -89,7 +89,7 @@ static int parse_redboot_partitions(struct mtd_info *master,
}
} else {
offset = directory * master->erasesize;
- while (master->block_isbad &&
+ while (mtd_can_have_bb(master) &&
mtd_block_isbad(master, offset)) {
offset += master->erasesize;
if (offset == master->size)
diff --git a/drivers/mtd/tests/mtd_readtest.c b/drivers/mtd/tests/mtd_readtest.c
index 4228eb4..121aba1 100644
--- a/drivers/mtd/tests/mtd_readtest.c
+++ b/drivers/mtd/tests/mtd_readtest.c
@@ -148,8 +148,7 @@ static int scan_for_bad_eraseblocks(void)
return -ENOMEM;
}
- /* NOR flash does not implement block_isbad */
- if (mtd->block_isbad == NULL)
+ if (!mtd_can_have_bb(mtd))
return 0;
printk(PRINT_PREF "scanning for bad eraseblocks\n");
diff --git a/drivers/mtd/tests/mtd_speedtest.c b/drivers/mtd/tests/mtd_speedtest.c
index 4d2ed5c..2aec4f3 100644
--- a/drivers/mtd/tests/mtd_speedtest.c
+++ b/drivers/mtd/tests/mtd_speedtest.c
@@ -336,8 +336,7 @@ static int scan_for_bad_eraseblocks(void)
return -ENOMEM;
}
- /* NOR flash does not implement block_isbad */
- if (mtd->block_isbad == NULL)
+ if (!mtd_can_have_bb(mtd))
goto out;
printk(PRINT_PREF "scanning for bad eraseblocks\n");
diff --git a/drivers/mtd/tests/mtd_stresstest.c b/drivers/mtd/tests/mtd_stresstest.c
index 399aa2b..7b33f22 100644
--- a/drivers/mtd/tests/mtd_stresstest.c
+++ b/drivers/mtd/tests/mtd_stresstest.c
@@ -227,8 +227,7 @@ static int scan_for_bad_eraseblocks(void)
return -ENOMEM;
}
- /* NOR flash does not implement block_isbad */
- if (mtd->block_isbad == NULL)
+ if (!mtd_can_have_bb(mtd))
return 0;
printk(PRINT_PREF "scanning for bad eraseblocks\n");
diff --git a/drivers/mtd/tests/mtd_torturetest.c b/drivers/mtd/tests/mtd_torturetest.c
index 557105f..b65861b 100644
--- a/drivers/mtd/tests/mtd_torturetest.c
+++ b/drivers/mtd/tests/mtd_torturetest.c
@@ -290,7 +290,7 @@ static int __init tort_init(void)
* Check if there is a bad eraseblock among those we are going to test.
*/
memset(&bad_ebs[0], 0, sizeof(int) * ebcnt);
- if (mtd->block_isbad) {
+ if (mtd_can_have_bb(mtd)) {
for (i = eb; i < eb + ebcnt; i++) {
err = mtd_block_isbad(mtd, (loff_t)i * mtd->erasesize);
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index 6c3fb5a..115749f 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -664,7 +664,7 @@ static int io_init(struct ubi_device *ubi)
ubi->peb_count = mtd_div_by_eb(ubi->mtd->size, ubi->mtd);
ubi->flash_size = ubi->mtd->size;
- if (ubi->mtd->block_isbad && ubi->mtd->block_markbad)
+ if (mtd_can_have_bb(ubi->mtd))
ubi->bad_allowed = 1;
if (ubi->mtd->type == MTD_NORFLASH) {
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 0893707..7e35755 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -440,6 +440,8 @@ static inline void mtd_resume(struct mtd_info *mtd)
static inline int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs)
{
+ if (!mtd->block_isbad)
+ return -EOPNOTSUPP;
return mtd->block_isbad(mtd, ofs);
}
@@ -483,6 +485,11 @@ static inline int mtd_has_oob(const struct mtd_info *mtd)
return mtd->read_oob && mtd->write_oob;
}
+static inline int mtd_can_have_bb(const struct mtd_info *mtd)
+{
+ return !!mtd->block_isbad;
+}
+
/* Kernel-side ioctl definitions */
struct mtd_partition;
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