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| author | Richard Purdie <rpurdie@rpsys.net> | 2008-01-29 12:27:09 +0100 |
|---|---|---|
| committer | David Woodhouse <dwmw2@infradead.org> | 2008-02-03 08:14:35 +0100 |
| commit | 2986bd2a330e57af53c016276d63d46ded10e9c5 (patch) | |
| tree | 4ec205203f6b45b3278b24d1bb964fa7ad92ed77 | |
| parent | [MTD] [NOR] Test devtype, not definition in flash_probe(), drivers/mtd/device... (diff) | |
| download | linux-2986bd2a330e57af53c016276d63d46ded10e9c5.tar.xz linux-2986bd2a330e57af53c016276d63d46ded10e9c5.zip | |
[MTD] mtdoops: Add further error return code checking
Add further error return code checks to the mtdoops driver.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| -rw-r--r-- | drivers/mtd/mtdoops.c | 41 |
1 files changed, 29 insertions, 12 deletions
diff --git a/drivers/mtd/mtdoops.c b/drivers/mtd/mtdoops.c index 20eaf294f620..723ca76d6b55 100644 --- a/drivers/mtd/mtdoops.c +++ b/drivers/mtd/mtdoops.c @@ -103,7 +103,7 @@ static int mtdoops_inc_counter(struct mtdoops_context *cxt) ret = mtd->read(mtd, cxt->nextpage * OOPS_PAGE_SIZE, 4, &retlen, (u_char *) &count); - if ((retlen != 4) || (ret < 0)) { + if ((retlen != 4) || ((ret < 0) && (ret != -EUCLEAN))) { printk(KERN_ERR "mtdoops: Read failure at %d (%td of 4 read)" ", err %d.\n", cxt->nextpage * OOPS_PAGE_SIZE, retlen, ret); @@ -136,8 +136,14 @@ static void mtdoops_prepare(struct mtdoops_context *cxt) cxt->nextpage = 0; } - while (mtd->block_isbad && - mtd->block_isbad(mtd, cxt->nextpage * OOPS_PAGE_SIZE)) { + while (mtd->block_isbad) { + ret = mtd->block_isbad(mtd, cxt->nextpage * OOPS_PAGE_SIZE); + if (!ret) + break; + if (ret < 0) { + printk(KERN_ERR "mtdoops: block_isbad failed, aborting.\n"); + return; + } badblock: printk(KERN_WARNING "mtdoops: Bad block at %08x\n", cxt->nextpage * OOPS_PAGE_SIZE); @@ -154,15 +160,20 @@ badblock: for (j = 0, ret = -1; (j < 3) && (ret < 0); j++) ret = mtdoops_erase_block(mtd, cxt->nextpage * OOPS_PAGE_SIZE); - if (ret < 0) { - if (mtd->block_markbad) - mtd->block_markbad(mtd, cxt->nextpage * OOPS_PAGE_SIZE); - goto badblock; + if (ret >= 0) { + printk(KERN_DEBUG "mtdoops: Ready %d, %d \n", cxt->nextpage, cxt->nextcount); + cxt->ready = 1; + return; } - printk(KERN_DEBUG "mtdoops: Ready %d, %d \n", cxt->nextpage, cxt->nextcount); - - cxt->ready = 1; + if (mtd->block_markbad && (ret == -EIO)) { + ret = mtd->block_markbad(mtd, cxt->nextpage * OOPS_PAGE_SIZE); + if (ret < 0) { + printk(KERN_ERR "mtdoops: block_markbad failed, aborting.\n"); + return; + } + } + goto badblock; } static void mtdoops_workfunc(struct work_struct *work) @@ -176,12 +187,18 @@ static void mtdoops_workfunc(struct work_struct *work) static int find_next_position(struct mtdoops_context *cxt) { struct mtd_info *mtd = cxt->mtd; - int page, maxpos = 0; + int ret, page, maxpos = 0; u32 count, maxcount = 0xffffffff; size_t retlen; for (page = 0; page < cxt->oops_pages; page++) { - mtd->read(mtd, page * OOPS_PAGE_SIZE, 4, &retlen, (u_char *) &count); + ret = mtd->read(mtd, page * OOPS_PAGE_SIZE, 4, &retlen, (u_char *) &count); + if ((retlen != 4) || ((ret < 0) && (ret != -EUCLEAN))) { + printk(KERN_ERR "mtdoops: Read failure at %d (%td of 4 read)" + ", err %d.\n", page * OOPS_PAGE_SIZE, retlen, ret); + continue; + } + if (count == 0xffffffff) continue; if (maxcount == 0xffffffff) { |