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authorArtem Bityutskiy <artem.bityutskiy@linux.intel.com>2013-03-14 09:57:23 +0200
committerDavid Woodhouse <David.Woodhouse@intel.com>2013-04-05 13:15:06 +0100
commit53552d22bfe1f83f69f18eddae2f1d96249440f3 (patch)
treecd4b25840a84c70d2287d195183b7361733cddd3 /include/linux/mtd
parentecb42fea59cf2d1e7160c5c7e707120e0e6714db (diff)
downloadop-kernel-dev-53552d22bfe1f83f69f18eddae2f1d96249440f3.zip
op-kernel-dev-53552d22bfe1f83f69f18eddae2f1d96249440f3.tar.gz
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>
Diffstat (limited to 'include/linux/mtd')
-rw-r--r--include/linux/mtd/nand.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index d5903c0..0f78d19 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;
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