[MTD] [NOR] Fixup for Numonyx M29W128 chips

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Gitweb:     http://git.infradead.org/?p=mtd-2.6.git;a=commit;h=504a3e72208fc6a65924426ff5693982590bccdc
Commit:     504a3e72208fc6a65924426ff5693982590bccdc
Parent:     d8877f191e35718ba11a4d46950131e74c40566c
Author:     Darius Augulis <augulis.darius at gmail.com>
AuthorDate: Wed Mar 25 11:23:51 2009 +0200
Committer:  David Woodhouse <David.Woodhouse at intel.com>
CommitDate: Mon Apr 6 07:23:26 2009 -0700

    [MTD] [NOR] Fixup for Numonyx M29W128 chips
    
    Prevent NUMONYX M29W128G memories from using write buffer,
    because it doesn't work properly.
    
    Signed-off-by: Darius Augulis <augulis.darius at gmail.com>
    Signed-off-by: David Woodhouse <David.Woodhouse at intel.com>
---
 drivers/mtd/chips/cfi_cmdset_0002.c |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
index 94bb61e..61ea833 100644
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -282,6 +282,16 @@ static void fixup_s29gl032n_sectors(struct mtd_info *mtd, void *param)
 	}
 }
 
+static void fixup_M29W128G_write_buffer(struct mtd_info *mtd, void *param)
+{
+	struct map_info *map = mtd->priv;
+	struct cfi_private *cfi = map->fldrv_priv;
+	if (cfi->cfiq->BufWriteTimeoutTyp) {
+		pr_warning("Don't use write buffer on ST flash M29W128G\n");
+		cfi->cfiq->BufWriteTimeoutTyp = 0;
+	}
+}
+
 static struct cfi_fixup cfi_fixup_table[] = {
 	{ CFI_MFR_ATMEL, CFI_ID_ANY, fixup_convert_atmel_pri, NULL },
 #ifdef AMD_BOOTLOC_BUG
@@ -298,6 +308,7 @@ static struct cfi_fixup cfi_fixup_table[] = {
 	{ CFI_MFR_AMD, 0x1301, fixup_s29gl064n_sectors, NULL, },
 	{ CFI_MFR_AMD, 0x1a00, fixup_s29gl032n_sectors, NULL, },
 	{ CFI_MFR_AMD, 0x1a01, fixup_s29gl032n_sectors, NULL, },
+	{ CFI_MFR_ST,  0x227E, fixup_M29W128G_write_buffer, NULL, },
 #if !FORCE_WORD_WRITE
 	{ CFI_MFR_ANY, CFI_ID_ANY, fixup_use_write_buffers, NULL, },
 #endif