mtd: spi-nor: atmel: fix unlock_all() for AT25FS010/040
These flashes have some weird BP bits mapping which aren't supported in the current locking code. Just add a simple unlock op to unprotect the entire flash array which is needed for legacy behavior. Fixes: 3e0930f1 ("mtd: spi-nor: Rework the disabling of block write protection") Signed-off-by: NMichael Walle <michael@walle.cc> Signed-off-by: NVignesh Raghavendra <vigneshr@ti.com> Reviewed-by: NTudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20201203162959.29589-7-michael@walle.cc
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