mtd: spi-nor: Check that BP bits are set properly

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Previously, the lock and unlock functions returned success even if the
BP bits were not actually updated in the status register due to
hardware write protection. Introduce write_sr_and_check() to write and
read back the status register to ensure the desired BP bits are
actually set as requested.

Signed-off-by: Joe Schultz <jschultz@xes-inc.com>
Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>

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Aaron Sierra 2017-12-05 12:13:44 -06:00 • committed by Cyrille Pitchen

parent 20ccb993f2

commit 2666067fdb

1 changed files with 23 additions and 12 deletions

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drivers/mtd/spi-nor/spi-nor.c

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