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| author | Kevin Cernekee <cernekee@gmail.com> | 2011-05-08 10:48:00 -0700 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2011-05-25 02:02:30 +0100 |
| commit | aa0846534b9c7238187b4276e83efb9969d4c6e3 (patch) | |
| tree | 383b75dea9fa0f79862c387fb415a118cd80b8be /drivers/mtd/devices/m25p80.c | |
| parent | 16004f3685541c57a280bae3fde6562256fd0ba5 (diff) | |
| download | op-kernel-dev-aa0846534b9c7238187b4276e83efb9969d4c6e3.zip op-kernel-dev-aa0846534b9c7238187b4276e83efb9969d4c6e3.tar.gz | |
mtd: m25p80: Clean up JEDEC manufacturer checks
Use the manufacturer ID names from cfi.h instead of hard-coding
hex constants. Introduce a JEDEC_MFR macro for clarity.
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd/devices/m25p80.c')
| -rw-r--r-- | drivers/mtd/devices/m25p80.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 15231d6..16adfaa 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -27,6 +27,7 @@ #include <linux/sched.h> #include <linux/mod_devicetable.h> +#include <linux/mtd/cfi.h> #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> @@ -76,6 +77,8 @@ #define FAST_READ_DUMMY_BYTE 0 #endif +#define JEDEC_MFR(_jedec_id) ((_jedec_id) >> 16) + /****************************************************************************/ struct m25p { @@ -872,9 +875,9 @@ static int __devinit m25p_probe(struct spi_device *spi) * up with the software protection bits set */ - if (info->jedec_id >> 16 == 0x1f || - info->jedec_id >> 16 == 0x89 || - info->jedec_id >> 16 == 0xbf) { + if (JEDEC_MFR(info->jedec_id) == CFI_MFR_ATMEL || + JEDEC_MFR(info->jedec_id) == CFI_MFR_INTEL || + JEDEC_MFR(info->jedec_id) == CFI_MFR_SST) { write_enable(flash); write_sr(flash, 0); } @@ -892,7 +895,7 @@ static int __devinit m25p_probe(struct spi_device *spi) flash->mtd.read = m25p80_read; /* sst flash chips use AAI word program */ - if (info->jedec_id >> 16 == 0xbf) + if (JEDEC_MFR(info->jedec_id) == CFI_MFR_SST) flash->mtd.write = sst_write; else flash->mtd.write = m25p80_write; |
