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mtd: spi-nor: wait for SR_WIP to clear on initial unlock 

Fixup a piece leftover by commit 32321e950d ("mtd: spi-nor: wait until
lock/unlock operations are ready"). That commit made us wait for the WIP
bit to settle after lock/unlock operations, but it missed the open-coded
"unlock" that happens at probe() time.

We should probably have this code utilize the unlock() routines in the
future, to avoid duplication, but unfortunately, flash which need to be
unlocked don't all have a proper ->flash_unlock() callback.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: Stas Sergeev <stsp@users.sourceforge.net>
Reviewed-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Tested-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
This commit is contained in:
Brian Norris 2016-01-29 11:25:30 -08:00
parent a8c65d504e
commit edf891ef9a
1 changed files with 1 additions and 0 deletions
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drivers/mtd/spi-nor/spi-nor.c
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@ -1193,6 +1193,7 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, enum read_mode mode)
JEDEC_MFR(info) == SNOR_MFR_SST) { JEDEC_MFR(info) == SNOR_MFR_SST) {
write_enable(nor); write_enable(nor);
write_sr(nor, 0); write_sr(nor, 0);
spi_nor_wait_till_ready(nor);
} }
if (!mtd->name) if (!mtd->name)