JFFS2 errors on ppc-4xx with CFI NOR flash

[massimo cirillo]

I suppose you don't have CONFIG_MTD_XIP enabled.
So in order to completely disable the suspend,
please in chip_ready() function just after "case FL_ERASING:"
(line 775) put the line "goto sleep;" and repeat your test.
Let me know.

2010/3/4 Ryan Thompson <i at ry.ca>:
>> On Thu, Mar 4, 2010 at 1:03 PM, massimo cirillo <maxcir at gmail.com> wrote:
>>> As first attempt try to disable erase suspend feature in the flash
>>> driver.
>
> I have tried this against my 2.6.31 tree by uncommenting the following
> in drivers/mtd/chips/cfi_cmdset_0001.c:40:
>
>    #define CMDSET0001_DISABLE_ERASE_SUSPEND_ON_WRITE
>
> Now my test output looks like the following. Note that it ran
> successfully from 3% - 53%, which is right in the range where problems
> tend to appear.
>
> Filesystem           1K-blocks      Used Available Use% Mounted on
> /dev/mtd/modules         32128      1032     31096   3% /mnt
> [... snip 3 - 52%, no errors ...]
> /dev/mtd/modules         32128     16668     15460  52% /mnt
> /dev/mtd/modules         32128     16912     15216  53% /mnt
> Jan  1 00:17:27 rjt kernel: Newly-erased block contained word 0x0 at
> offset 0x0022a030
> /dev/mtd/modules         32128     17308     14820  54% /mnt
> /dev/mtd/modules         32128     17572     14556  55% /mnt
> /dev/mtd/modules         32128     17836     14292  56% /mnt
> /dev/mtd/modules         32128     18100     14028  56% /mnt
> /dev/mtd/modules         32128     18368     13760  57% /mnt
> /dev/mtd/modules         32128     18604     13524  58% /mnt
> Jan  1 00:18:40 rjt kernel: Newly-erased block contained word 0x0 at
> offset 0x01b2a010
> /dev/mtd/modules         32128     18992     13136  59% /mnt
> /dev/mtd/modules         32128     19260     12868  60% /mnt
> /dev/mtd/modules         32128     19524     12604  61% /mnt
> /dev/mtd/modules         32128     19788     12340  62% /mnt
> /dev/mtd/modules         32128     20052     12076  62% /mnt
> /dev/mtd/modules         32128     20316     11812  63% /mnt
> /dev/mtd/modules         32128     20552     11576  64% /mnt
> Jan  1 00:20:04 rjt kernel: Newly-erased block contained word 0x0 at
> offset 0x013ca034
> /dev/mtd/modules         32128     20944     11184  65% /mnt
> /dev/mtd/modules         32128     21208     10920  66% /mnt
> /dev/mtd/modules         32128     21476     10652  67% /mnt
> /dev/mtd/modules         32128     21740     10388  68% /mnt
> /dev/mtd/modules         32128     22004     10124  68% /mnt
> /dev/mtd/modules         32128     22244      9884  69% /mnt
> /dev/mtd/modules         32128     22504      9624  70% /mnt
> /dev/mtd/modules         32128     22764      9364  71% /mnt
> /dev/mtd/modules         32128     23032      9096  72% /mnt
> /dev/mtd/modules         32128     23296      8832  73% /mnt
> /dev/mtd/modules         32128     23564      8564  73% /mnt
> /dev/mtd/modules         32128     23828      8300  74% /mnt
> /dev/mtd/modules         32128     24092      8036  75% /mnt
> /dev/mtd/modules         32128     24328      7800  76% /mnt
> Jan  1 00:22:48 rjt kernel: Newly-erased block contained word 0x0 at
> offset 0x0052a004
> /dev/mtd/modules         32128     24716      7412  77% /mnt
> Jan  1 00:23:02 rjt kernel: Newly-erased block contained word 0x0 at
> offset 0x003ea034
> /dev/mtd/modules         32128     25116      7012  78% /mnt
> Jan  1 00:23:42 rjt kernel: Newly-erased block contained word 0x0 at
> offset 0x0006a028
> /dev/mtd/modules         32128     25492      6636  79% /mnt
> Jan  1 00:24:03 rjt kernel: Newly-erased block contained word 0x0 at
> offset 0x01dc9fb8
> Jan  1 00:24:12 rjt kernel: f0000000.flash: block erase error: (status timeout)
> Jan  1 00:24:12 rjt kernel: Erase at 0x01da0000 failed immediately: errno -62
> Jan  1 00:24:27 rjt kernel: Newly-erased block contained word 0x0 at
> offset 0x01c6a004
> Jan  1 00:24:36 rjt kernel: f0000000.flash: block erase error: (status timeout)
> Jan  1 00:24:36 rjt kernel: Erase at 0x01c40000 failed immediately: errno -62
> /dev/mtd/modules         32128     26268      5860  82% /mnt
> /dev/mtd/modules         32128     26528      5600  83% /mnt
> Jan  1 00:25:33 rjt kernel: Newly-erased block contained word 0x0 at
> offset 0x017aa034
> Jan  1 00:25:41 rjt kernel: f0000000.flash: block erase error: (status timeout)
> Jan  1 00:25:41 rjt kernel: Erase at 0x01780000 failed immediately: errno -62
> Jan  1 00:25:45 rjt kernel: Newly-erased block contained word 0x0 at
> offset 0x0176a024
> Jan  1 00:25:54 rjt kernel: f0000000.flash: block erase error: (status timeout)
> Jan  1 00:25:54 rjt kernel: Erase at 0x01740000 failed immediately: errno -62
> Jan  1 00:26:14 rjt kernel: Newly-erased block contained word 0x0 at
> offset 0x0154a048
> Jan  1 00:26:23 rjt kernel: f0000000.flash: block erase error: (status timeout)
> Jan  1 00:26:23 rjt kernel: Erase at 0x01520000 failed immediately: errno -62
> Jan  1 00:26:44 rjt kernel: Newly-erased block contained word 0x0 at
> offset 0x0150a024
> Jan  1 00:26:53 rjt kernel: f0000000.flash: block erase error: (status timeout)
> Jan  1 00:26:53 rjt kernel: Erase at 0x014e0000 failed immediately: errno -62
> Jan  1 00:27:18 rjt kernel: Newly-erased block contained word 0x0 at
> offset 0x0140738c
> Jan  1 00:27:27 rjt kernel: f0000000.flash: block erase error: (status timeout)
> Jan  1 00:27:27 rjt kernel: Erase at 0x013e0000 failed immediately: errno -62
> /dev/mtd/modules         32128     28076      4052  87% /mnt
> Jan  1 00:28:10 rjt kernel: Newly-erased block contained word 0x0 at
> offset 0x00f6a048
> Jan  1 00:28:18 rjt kernel: f0000000.flash: block erase error: (status timeout)
> Jan  1 00:28:18 rjt kernel: Erase at 0x00f40000 failed immediately: errno -62
> /dev/mtd/modules         32128     28584      3544  89% /mnt
> Jan  1 00:28:42 rjt kernel: Newly-erased block contained word 0x0 at
> offset 0x00d2a040
> Jan  1 00:28:51 rjt kernel: f0000000.flash: block erase error: (status timeout)
> Jan  1 00:28:51 rjt kernel: Erase at 0x00d00000 failed immediately: errno -62
> Jan  1 00:29:04 rjt kernel: Newly-erased block contained word 0x0 at
> offset 0x00cca02c
> Jan  1 00:29:12 rjt kernel: f0000000.flash: block erase error: (status timeout)
> Jan  1 00:29:12 rjt kernel: Erase at 0x00ce0000 failed immediately: errno -62
> Jan  1 00:29:42 rjt kernel: Newly-erased block contained word 0x0 at
> offset 0x00aca038
> Jan  1 00:29:51 rjt kernel: f0000000.flash: block erase error: (status timeout)
> Jan  1 00:29:51 rjt kernel: Erase at 0x00aa0000 failed immediately: errno -62
> Jan  1 00:30:02 rjt kernel: Newly-erased block contained word 0x0 at
> offset 0x0096a010
> Jan  1 00:30:11 rjt kernel: f0000000.flash: block erase error: (status timeout)
> Jan  1 00:30:11 rjt kernel: Erase at 0x00940000 failed immediately: errno -62
> /dev/mtd/modules         32128     29872      2256  93% /mnt
>
> The errors continued until the filesystem actually reported 100% full
> and my script terminated. The entire 3%-100% operation took about 21
> minutes for <32MiB, and was definitely much slower towards the end
> with all the errors.
>
> - R
>