[PATCH] MTD: Fix bug in fixup_convert_atmel_pri

[Haavard Skinnemoen]

The memset() in fixup_convert_atmel_pri is supposed to zero out
everything except the first 5 bytes in *extp, but it ends up zeroing
out something way outside the struct instead. Fix this potentially
dangerous code by casting the pointer to char * before doing
arithmetic.

Signed-off-by: Haavard Skinnemoen <hskinnemoen at atmel.com>
---
 drivers/mtd/chips/cfi_cmdset_0002.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6.18-rc6-mm2/drivers/mtd/chips/cfi_cmdset_0002.c
===================================================================
--- linux-2.6.18-rc6-mm2.orig/drivers/mtd/chips/cfi_cmdset_0002.c	2006-09-15 14:39:22.000000000 +0200
+++ linux-2.6.18-rc6-mm2/drivers/mtd/chips/cfi_cmdset_0002.c	2006-09-15 14:39:40.000000000 +0200
@@ -175,7 +175,7 @@ static void fixup_convert_atmel_pri(stru
 	struct cfi_pri_atmel atmel_pri;
 
 	memcpy(&atmel_pri, extp, sizeof(atmel_pri));
-	memset(extp + 5, 0, sizeof(*extp) - 5);
+	memset((char *)extp + 5, 0, sizeof(*extp) - 5);
 
 	if (atmel_pri.Features & 0x02)
 		extp->EraseSuspend = 2;