diff options
| author | Len Brown <len.brown@intel.com> | 2008-10-23 07:57:26 +0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2008-10-23 08:11:07 +0400 |
| commit | 057316cc6a5b521b332a1d7ccc871cd60c904c74 (patch) | |
| tree | 4333e608da237c73ff69b10878025cca96dcb4c8 /drivers/mtd/mtdoops.c | |
| parent | 3e2dab9a1c2deb03c311eb3f83466009147ed4d3 (diff) | |
| parent | 2515ddc6db8eb49a79f0fe5e67ff09ac7c81eab4 (diff) | |
| download | linux-057316cc6a5b521b332a1d7ccc871cd60c904c74.tar.xz | |
Merge branch 'linus' into test
Conflicts:
MAINTAINERS
arch/x86/kernel/acpi/boot.c
arch/x86/kernel/acpi/sleep.c
drivers/acpi/Kconfig
drivers/pnp/Makefile
drivers/pnp/quirks.c
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/mtd/mtdoops.c')
| -rw-r--r-- | drivers/mtd/mtdoops.c | 42 |
1 files changed, 22 insertions, 20 deletions
diff --git a/drivers/mtd/mtdoops.c b/drivers/mtd/mtdoops.c index 5a680e1e61f1..aebb3b27edbd 100644 --- a/drivers/mtd/mtdoops.c +++ b/drivers/mtd/mtdoops.c @@ -33,6 +33,7 @@ #include <linux/interrupt.h> #include <linux/mtd/mtd.h> +#define MTDOOPS_KERNMSG_MAGIC 0x5d005d00 #define OOPS_PAGE_SIZE 4096 static struct mtdoops_context { @@ -99,7 +100,7 @@ static void mtdoops_inc_counter(struct mtdoops_context *cxt) int ret; cxt->nextpage++; - if (cxt->nextpage > cxt->oops_pages) + if (cxt->nextpage >= cxt->oops_pages) cxt->nextpage = 0; cxt->nextcount++; if (cxt->nextcount == 0xffffffff) @@ -141,7 +142,7 @@ static void mtdoops_workfunc_erase(struct work_struct *work) mod = (cxt->nextpage * OOPS_PAGE_SIZE) % mtd->erasesize; if (mod != 0) { cxt->nextpage = cxt->nextpage + ((mtd->erasesize - mod) / OOPS_PAGE_SIZE); - if (cxt->nextpage > cxt->oops_pages) + if (cxt->nextpage >= cxt->oops_pages) cxt->nextpage = 0; } @@ -158,7 +159,7 @@ badblock: cxt->nextpage * OOPS_PAGE_SIZE); i++; cxt->nextpage = cxt->nextpage + (mtd->erasesize / OOPS_PAGE_SIZE); - if (cxt->nextpage > cxt->oops_pages) + if (cxt->nextpage >= cxt->oops_pages) cxt->nextpage = 0; if (i == (cxt->oops_pages / (mtd->erasesize / OOPS_PAGE_SIZE))) { printk(KERN_ERR "mtdoops: All blocks bad!\n"); @@ -224,40 +225,40 @@ static void find_next_position(struct mtdoops_context *cxt) { struct mtd_info *mtd = cxt->mtd; int ret, page, maxpos = 0; - u32 count, maxcount = 0xffffffff; + u32 count[2], maxcount = 0xffffffff; size_t retlen; for (page = 0; page < cxt->oops_pages; page++) { - 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)" + ret = mtd->read(mtd, page * OOPS_PAGE_SIZE, 8, &retlen, (u_char *) &count[0]); + if ((retlen != 8) || ((ret < 0) && (ret != -EUCLEAN))) { + printk(KERN_ERR "mtdoops: Read failure at %d (%td of 8 read)" ", err %d.\n", page * OOPS_PAGE_SIZE, retlen, ret); continue; } - if (count == 0xffffffff) + if (count[1] != MTDOOPS_KERNMSG_MAGIC) + continue; + if (count[0] == 0xffffffff) continue; if (maxcount == 0xffffffff) { - maxcount = count; + maxcount = count[0]; maxpos = page; - } else if ((count < 0x40000000) && (maxcount > 0xc0000000)) { - maxcount = count; + } else if ((count[0] < 0x40000000) && (maxcount > 0xc0000000)) { + maxcount = count[0]; maxpos = page; - } else if ((count > maxcount) && (count < 0xc0000000)) { - maxcount = count; + } else if ((count[0] > maxcount) && (count[0] < 0xc0000000)) { + maxcount = count[0]; maxpos = page; - } else if ((count > maxcount) && (count > 0xc0000000) + } else if ((count[0] > maxcount) && (count[0] > 0xc0000000) && (maxcount > 0x80000000)) { - maxcount = count; + maxcount = count[0]; maxpos = page; } } if (maxcount == 0xffffffff) { cxt->nextpage = 0; cxt->nextcount = 1; - cxt->ready = 1; - printk(KERN_DEBUG "mtdoops: Ready %d, %d (first init)\n", - cxt->nextpage, cxt->nextcount); + schedule_work(&cxt->work_erase); return; } @@ -358,8 +359,9 @@ mtdoops_console_write(struct console *co, const char *s, unsigned int count) if (cxt->writecount == 0) { u32 *stamp = cxt->oops_buf; - *stamp = cxt->nextcount; - cxt->writecount = 4; + *stamp++ = cxt->nextcount; + *stamp = MTDOOPS_KERNMSG_MAGIC; + cxt->writecount = 8; } if ((count + cxt->writecount) > OOPS_PAGE_SIZE) |