diff options
Diffstat (limited to 'drivers/mtd/devices/m25p80.c')
| -rw-r--r-- | drivers/mtd/devices/m25p80.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 85e35467fba6..7c8b1694a134 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -223,6 +223,8 @@ static int m25p_probe(struct spi_device *spi) */ if (data && data->type) flash_name = data->type; + else if (!strcmp(spi->modalias, "nor-jedec")) + flash_name = NULL; /* auto-detect */ else flash_name = spi->modalias; @@ -247,9 +249,16 @@ static int m25p_remove(struct spi_device *spi) } /* - * XXX This needs to be kept in sync with spi_nor_ids. We can't share - * it with spi-nor, because if this is built as a module then modpost - * won't be able to read it and add appropriate aliases. + * Do NOT add to this array without reading the following: + * + * Historically, many flash devices are bound to this driver by their name. But + * since most of these flash are compatible to some extent, and their + * differences can often be differentiated by the JEDEC read-ID command, we + * encourage new users to add support to the spi-nor library, and simply bind + * against a generic string here (e.g., "nor-jedec"). + * + * Many flash names are kept here in this list (as well as in spi-nor.c) to + * keep them available as module aliases for existing platforms. */ static const struct spi_device_id m25p_ids[] = { {"at25fs010"}, {"at25fs040"}, {"at25df041a"}, {"at25df321a"}, @@ -291,6 +300,12 @@ static const struct spi_device_id m25p_ids[] = { {"w25x64"}, {"w25q64"}, {"w25q80"}, {"w25q80bl"}, {"w25q128"}, {"w25q256"}, {"cat25c11"}, {"cat25c03"}, {"cat25c09"}, {"cat25c17"}, {"cat25128"}, + + /* + * Generic support for SPI NOR that can be identified by the JEDEC READ + * ID opcode (0x9F). Use this, if possible. + */ + {"nor-jedec"}, { }, }; MODULE_DEVICE_TABLE(spi, m25p_ids); |