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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: b199489d37
("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
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parent
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1 changed files with 2 additions and 1 deletions
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@ -2948,10 +2948,11 @@ static void spi_nor_set_mtd_info(struct spi_nor *nor)
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mtd->flags = MTD_CAP_NORFLASH;
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mtd->flags = MTD_CAP_NORFLASH;
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if (nor->info->flags & SPI_NOR_NO_ERASE)
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if (nor->info->flags & SPI_NOR_NO_ERASE)
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mtd->flags |= MTD_NO_ERASE;
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mtd->flags |= MTD_NO_ERASE;
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else
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mtd->_erase = spi_nor_erase;
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mtd->writesize = nor->params->writesize;
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mtd->writesize = nor->params->writesize;
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mtd->writebufsize = nor->params->page_size;
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mtd->writebufsize = nor->params->page_size;
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mtd->size = nor->params->size;
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mtd->size = nor->params->size;
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mtd->_erase = spi_nor_erase;
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mtd->_read = spi_nor_read;
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mtd->_read = spi_nor_read;
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/* Might be already set by some SST flashes. */
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/* Might be already set by some SST flashes. */
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if (!mtd->_write)
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if (!mtd->_write)
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