mtd: spi-nor: check FSR error bits for Micron memories

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For Micron spi nor device, when erase/program operation
fails, especially the failure results from intending to
modify protected space, spi-nor upper layers still get
the return which shows the operation succeeds. This is
because current spi_nor_fsr_ready() only uses FSR bit.7
(flag status register) to check device whether ready.
This patch fixes this issue by checking relevant error
bits in FSR.
The FSR is a powerful tool to investigate the status of
device, checking information regarding what the memory is
actually doing and detecting possible error conditions.

Signed-off-by: beanhuo <beanhuo@micron.com>
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>

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Bean Huo (beanhuo) 2017-12-04 12:34:47 +00:00 • committed by Cyrille Pitchen

parent 6d17969c8e

commit 20ccb993f2

2 changed files with 21 additions and 3 deletions

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include/linux/mtd/spi-nor.h

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