AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/drivers/mtd/chips
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Dmitry Eremin-Solenikov 89cf38dd53 mtd: cfi_cmdset_0001.c: fix resume for LH28F640BF chips 
After '#echo mem > /sys/power/state' some devices can not be properly resumed
because apparently the MTD Partition Configuration Register has been reset
to default thus the rootfs cannot be mounted cleanly on resume.
An example of this can be found in the SA-1100 Developer's Manual at 9.5.3.3
where the second step of the Sleep Shutdown Sequence is described:
"An internal reset is applied to the SA-1100. All units are reset...".

As workaround we refresh the PCR value as done initially on chip setup.

This behavior and the fix are confirmed by our tests done on 2 different Zaurus
collie units with kernel 3.17.

Fixes: 812c5fa82b: ("mtd: cfi_cmdset_0001.c: add support for Sharp LH28F640BF NOR")
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Andrea Adami <andrea.adami@gmail.com>
Cc: <stable@vger.kernel.org> # 3.16+
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2014-10-29 18:50:52 -07:00
..
cfi_cmdset_0001.c mtd: cfi_cmdset_0001.c: fix resume for LH28F640BF chips 2014-10-29 18:50:52 -07:00
cfi_cmdset_0002.c Merge l2-mtd/next into l2-mtd/master 2014-08-19 11:57:23 -07:00
cfi_cmdset_0020.c mtd: cfi: indent some if statements 2014-05-20 17:36:01 -07:00
cfi_probe.c mtd: cfi: Remove unnecessary OOM messages 2014-03-10 22:42:25 -07:00
cfi_util.c mtd: cfi: indent some if statements 2014-05-20 17:36:01 -07:00
chipreg.c mtd: simplify return logic in do_map_probe() 2012-03-27 00:35:06 +01:00
fwh_lock.h mtd: add leading underscore to all mtd functions 2012-03-27 00:20:01 +01:00
gen_probe.c mtd: gen_probe: Remove unnecessary OOM messages 2014-03-10 22:42:25 -07:00
jedec_probe.c mtd: jedec_probe: fix LH28F640BF definition 2013-08-05 21:04:17 +01:00
Kconfig mtd: Kconfig: give the CFI command set version in prompt and help 2014-05-20 17:36:43 -07:00
Makefile
map_absent.c mtd: remove retlen zeroing duplication 2012-03-27 00:29:34 +01:00
map_ram.c mtd: remove R/O checking duplication 2012-03-27 00:29:11 +01:00
map_rom.c mtd: remove R/O checking duplication 2012-03-27 00:29:11 +01:00