From: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Date: Thu, 14 Mar 2013 07:57:23 +0000 (+0200)
Subject: mtd: introduce a macro for max NAND ID sequence length
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=53552d22bfe1f83f69f18eddae2f1d96249440f3;p=linux-beck.git

mtd: introduce a macro for max NAND ID sequence length

Introduce a helpful macro for the maximum NAND ID sequence length instead of
using the "8" magic number.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Acked-by: Huang Shijie <shijie8@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
---

diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index d5903c0a0fe7..0f78d19303c5 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -546,6 +546,9 @@ struct nand_chip {
 #define NAND_MFR_MACRONIX	0xc2
 #define NAND_MFR_EON		0x92
 
+/* The maximum expected count of bytes in the NAND ID sequence */
+#define NAND_MAX_ID_LEN 8
+
 /*
  * A helper for defining older NAND chips where the second ID byte fully
  * defined the chip, including the geometry (chip size, eraseblock size, page
@@ -593,7 +596,7 @@ struct nand_flash_dev {
 			uint8_t mfr_id;
 			uint8_t dev_id;
 		};
-		uint8_t id[8];
+		uint8_t id[NAND_MAX_ID_LEN];
 	};
 	unsigned int pagesize;
 	unsigned int chipsize;