[MTD] [NOR] Fix Intel CFI driver for collie flash

collie seems to contain LH28F640BF flash chips. According to
http://sharp-world.com/products/device/flash/pdf/*FUM00701*@E.pdf
(page 83) if they have 0x51 of Extended Query Table (number of hardware
partitions) set to zero, they have a single fixed partition.
This patch makes those chips work.

Signed-off-by: Thomas Kunze <thommycheck@gmx.de>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index eb0e30824ddb..e812df607a5c 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -619,6 +619,9 @@ static int cfi_intelext_partition_fixup(struct mtd_info *mtd,
                                   sizeof(struct cfi_intelext_blockinfo);
                 }
 
+                if (!numparts)
+                        numparts = 1;
+
                 /* Programming Region info */
                 if (extp->MinorVersion >= '4') {
                         struct cfi_intelext_programming_regioninfo *prinfo;