diff options
| author | Tudor Ambarus <tudor.ambarus@microchip.com> | 2022-02-28 18:33:34 +0200 |
|---|---|---|
| committer | Tudor Ambarus <tudor.ambarus@microchip.com> | 2022-03-08 10:36:56 +0200 |
| commit | 151c6b49d679872d6fc0b50e0ad96303091694a2 (patch) | |
| tree | 51dd9995c4991aaae55d31a181375b99511d571c /drivers/mtd/spi-nor/core.c | |
| parent | 3c552889e431cf5c9680bb7de1c5d16bcc90b033 (diff) | |
| download | linux-151c6b49d679872d6fc0b50e0ad96303091694a2.tar.bz2 | |
mtd: spi-nor: Skip erase logic when SPI_NOR_NO_ERASE is set
Even if SPI_NOR_NO_ERASE was set, one could still send erase opcodes
to the flash. It is not recommended to send unsupported opcodes to
flashes. Fix the logic and do not set mtd->_erase when SPI_NOR_NO_ERASE
is specified. With this users will not be able to issue erase opcodes to
flashes and instead they will recive an -ENOTSUPP error.
Fixes: b199489d37b2 ("mtd: spi-nor: add the framework for SPI NOR")
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20220228163334.277730-1-tudor.ambarus@microchip.com
Diffstat (limited to 'drivers/mtd/spi-nor/core.c')
| -rw-r--r-- | drivers/mtd/spi-nor/core.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c index 9014008e60b3..b4f141ad9c9c 100644 --- a/drivers/mtd/spi-nor/core.c +++ b/drivers/mtd/spi-nor/core.c @@ -2948,10 +2948,11 @@ static void spi_nor_set_mtd_info(struct spi_nor *nor) mtd->flags = MTD_CAP_NORFLASH; if (nor->info->flags & SPI_NOR_NO_ERASE) mtd->flags |= MTD_NO_ERASE; + else + mtd->_erase = spi_nor_erase; mtd->writesize = nor->params->writesize; mtd->writebufsize = nor->params->page_size; mtd->size = nor->params->size; - mtd->_erase = spi_nor_erase; mtd->_read = spi_nor_read; /* Might be already set by some SST flashes. */ if (!mtd->_write) |