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mtd: merge MTD development from v4.4 into for-v4.5 development 

Small conflict between some bugfixes for 4.4 and some refactoring for
4.5.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
hifive-unleashed-5.1
Brian Norris 2016-01-05 16:04:40 -08:00
parent 887e9d3a1f a32d5b726f
commit e576330033
3 changed files with 22 additions and 16 deletions
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26
drivers/mtd/mtdcore.c
View File

@ -427,15 +427,6 @@ int add_mtd_device(struct mtd_info *mtd)
mtd->erasesize_mask = (1 << mtd->erasesize_shift) - 1;
mtd->writesize_mask = (1 << mtd->writesize_shift) - 1;
if (mtd->dev.parent) {
if (!mtd->owner && mtd->dev.parent->driver)
mtd->owner = mtd->dev.parent->driver->owner;
if (!mtd->name)
mtd->name = dev_name(mtd->dev.parent);
} else {
pr_debug("mtd device won't show a device symlink in sysfs\n");
}
/* Some chips always power up locked. Unlock them now */
if ((mtd->flags & MTD_WRITEABLE) && (mtd->flags & MTD_POWERUP_LOCK)) {
error = mtd_unlock(mtd, 0, mtd->size);
@ -554,6 +545,21 @@ static int mtd_add_device_partitions(struct mtd_info *mtd,
return 0;
}
/*
* Set a few defaults based on the parent devices, if not provided by the
* driver
*/
static void mtd_set_dev_defaults(struct mtd_info *mtd)
{
if (mtd->dev.parent) {
if (!mtd->owner && mtd->dev.parent->driver)
mtd->owner = mtd->dev.parent->driver->owner;
if (!mtd->name)
mtd->name = dev_name(mtd->dev.parent);
} else {
pr_debug("mtd device won't show a device symlink in sysfs\n");
}
}
/**
* mtd_device_parse_register - parse partitions and register an MTD device.
@ -592,6 +598,8 @@ int mtd_device_parse_register(struct mtd_info *mtd, const char * const *types,
struct mtd_partitions parsed;
int ret;
mtd_set_dev_defaults(mtd);
memset(&parsed, 0, sizeof(parsed));
ret = parse_mtd_partitions(mtd, types, &parsed, parser_data);

10
drivers/mtd/spi-nor/spi-nor.c
View File

@ -539,8 +539,8 @@ static int stm_unlock(struct spi_nor *nor, loff_t ofs, uint64_t len)
return status_old;
/* Cannot unlock; would unlock larger region than requested */
if (stm_is_locked_sr(nor, status_old, ofs - mtd->erasesize,
mtd->erasesize))
if (stm_is_locked_sr(nor, ofs - mtd->erasesize, mtd->erasesize,
status_old))
return -EINVAL;
/*
@ -1225,8 +1225,7 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, enum read_mode mode)
if (JEDEC_MFR(info) == SNOR_MFR_ATMEL ||
JEDEC_MFR(info) == SNOR_MFR_INTEL ||
JEDEC_MFR(info) == SNOR_MFR_SST ||
JEDEC_MFR(info) == SNOR_MFR_WINBOND) {
JEDEC_MFR(info) == SNOR_MFR_SST) {
write_enable(nor);
write_sr(nor, 0);
}
@ -1242,8 +1241,7 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, enum read_mode mode)
mtd->_read = spi_nor_read;
/* NOR protection support for STmicro/Micron chips and similar */
if (JEDEC_MFR(info) == SNOR_MFR_MICRON ||
JEDEC_MFR(info) == SNOR_MFR_WINBOND) {
if (JEDEC_MFR(info) == SNOR_MFR_MICRON) {
nor->flash_lock = stm_lock;
nor->flash_unlock = stm_unlock;
nor->flash_is_locked = stm_is_locked;

2
include/linux/mtd/spi-nor.h
View File

@ -26,7 +26,7 @@
#define SNOR_MFR_MACRONIX CFI_MFR_MACRONIX
#define SNOR_MFR_SPANSION CFI_MFR_AMD
#define SNOR_MFR_SST CFI_MFR_SST
#define SNOR_MFR_WINBOND 0xef
#define SNOR_MFR_WINBOND 0xef /* Also used by some Spansion */
/*
* Note on opcode nomenclature: some opcodes have a format like