mtd/m25p80: fix test for end of loop

"plat_id" is always non-NULL here.  There is a zero element on the end
of the m25p_ids[] array and if we hit the end of the loop then plat_id
points to that.

This would lead to a NULL pointer dereference later on in the function.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Anton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 83c90867240f..6f512b5c117b 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -793,7 +793,7 @@ static int __devinit m25p_probe(struct spi_device *spi)
                         break;
                 }
 
-                if (plat_id)
+                if (i < ARRAY_SIZE(m25p_ids) - 1)
                         id = plat_id;
                 else
                         dev_warn(&spi->dev, "unrecognized id %s\n", data->type);