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mtd: introduce a macro for max NAND ID sequence length

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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>
This commit is contained in:
Artem Bityutskiy 2013-03-14 09:57:23 +02:00 committed by David Woodhouse
parent ecb42fea59
commit 53552d22bf
1 changed files with 4 additions and 1 deletions
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5
include/linux/mtd/nand.h
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@ -546,6 +546,9 @@ struct nand_chip {
#define NAND_MFR_MACRONIX 0xc2 #define NAND_MFR_MACRONIX 0xc2
#define NAND_MFR_EON 0x92 #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 * A helper for defining older NAND chips where the second ID byte fully
* defined the chip, including the geometry (chip size, eraseblock size, page * 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 mfr_id;
uint8_t dev_id; uint8_t dev_id;
}; };
uint8_t id[8]; uint8_t id[NAND_MAX_ID_LEN];
}; };
unsigned int pagesize; unsigned int pagesize;
unsigned int chipsize; unsigned int chipsize;