Messages in this thread | | | Date | Thu, 22 Jun 2017 16:13:23 -0400 | From | Tejun Heo <> | Subject | Re: [PATCH 0/3] libata: prevent writes to read-only registers |
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On Wed, Jun 21, 2017 at 04:20:11PM -0700, Doug Berger wrote: > Recent Broadcom SoCs allow for the trapping of write accesses to > read-only registers. This is only useful if such accesses are > exceptional, so it is desirable to prevent such accesses in normal > operation. To that end, this set of commits proposes adding two > flags to the libata core. > > The first allows for a quirk that exists in some Broadcom devices > that are capable of supporting Aggresive Link Power Management even > though it is not reported by their read-only capability register. > This removes a need for the Broadcom driver to write to it's > read-only capability register. > > The second is a notification to the libata-core that it should not > write to any standard registers that are defined to be read-only. > > The Broadcom driver is then modified to use these two general > purpose flags.
Applied 1-3 to libata/for-4.13.
Thanks.
-- tejun
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