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mtd: spi-nor: intel-spi: Disable write protection only if asked

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[ Upstream commit cd149eff8d2201a63c074a6d9d03e52926aa535d ]

Currently the driver tries to disable the BIOS write protection
automatically even if this is not what the user wants. For this reason
modify the driver so that by default it does not touch the write
protection. Only if specifically asked by the user (setting writeable=1
command line parameter) the driver tries to disable the BIOS write
protection.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Mauro Lima <mauro.lima@eclypsium.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20220209122706.42439-2-mika.westerberg@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Stable-dep-of: 92a66cbf6b30 ("spi: intel: Use correct mask for flash and protected regions")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Mika Westerberg
2022-02-09 15:27:04 +03:00
committed by Greg Kroah-Hartman
parent a326fffdc7
commit 23793518a7
4 changed files with 96 additions and 39 deletions
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6
include/linux/platform_data/intel-spi.h
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@@ -19,11 +19,13 @@ enum intel_spi_type {
/**
* struct intel_spi_boardinfo - Board specific data for Intel SPI driver
* @type: Type which this controller is compatible with
* @writeable: The chip is writeable
* @set_writeable: Try to make the chip writeable (optional)
* @data: Data to be passed to @set_writeable can be %NULL
*/
struct intel_spi_boardinfo {
enum intel_spi_type type;
bool writeable;
bool (*set_writeable)(void __iomem *base, void *data);
void *data;
};
#endif /* INTEL_SPI_PDATA_H */