Messages in this thread | | | Date | Wed, 29 Oct 2014 18:54:59 -0700 | From | Brian Norris <> | Subject | Re: [PATCH] mtd: cfi_cmdset_0001.c: fix resume for LH28F640BF chips |
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On Thu, Oct 23, 2014 at 01:23:01AM +0200, Andrea Adami wrote: > 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. > > Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> > Signed-off-by: Andrea Adami <andrea.adami@gmail.com>
Pushed to l2-mtd.git/for-3.18. Changed the author to Dmitry and added the following:
Fixes: 812c5fa82bae: ("mtd: cfi_cmdset_0001.c: add support for Sharp LH28F640BF NOR") Cc: <stable@vger.kernel.org> # 3.16+
Thanks, Brian
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