From f78ec6b2f32efad1fc6b2196e966dcec8122d689 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <error27@gmail.com>
Date: Thu, 12 Aug 2010 09:58:27 +0200
Subject: [PATCH] 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>
---
 drivers/mtd/devices/m25p80.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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);
-- 
2.30.2