diff options
Diffstat (limited to 'drivers/mtd/spi/sf_mtd.c')
| -rw-r--r-- | drivers/mtd/spi/sf_mtd.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/mtd/spi/sf_mtd.c b/drivers/mtd/spi/sf_mtd.c index 58d7e44399..aabbc35894 100644 --- a/drivers/mtd/spi/sf_mtd.c +++ b/drivers/mtd/spi/sf_mtd.c @@ -10,6 +10,7 @@ #include <spi_flash.h> static struct mtd_info sf_mtd_info; +static bool sf_mtd_registered; static char sf_mtd_name[8]; static int spi_flash_mtd_erase(struct mtd_info *mtd, struct erase_info *instr) @@ -73,6 +74,12 @@ static int spi_flash_mtd_number(void) int spi_flash_mtd_register(struct spi_flash *flash) { + int ret; + + if (sf_mtd_registered) + del_mtd_device(&sf_mtd_info); + + sf_mtd_registered = false; memset(&sf_mtd_info, 0, sizeof(sf_mtd_info)); sprintf(sf_mtd_name, "nor%d", spi_flash_mtd_number()); @@ -94,7 +101,11 @@ int spi_flash_mtd_register(struct spi_flash *flash) sf_mtd_info.numeraseregions = 0; sf_mtd_info.erasesize = flash->sector_size; - return add_mtd_device(&sf_mtd_info); + ret = add_mtd_device(&sf_mtd_info); + if (!ret) + sf_mtd_registered = true; + + return ret; } void spi_flash_mtd_unregister(void) |