Messages in this thread | | | Date | Tue, 8 Mar 2016 14:44:28 -0800 | Subject | Re: [PATCH v2-UPDATE2 3/4] resource: Add device-managed insert/remove_resource() | From | Dan Williams <> |
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On Tue, Mar 8, 2016 at 2:23 PM, Linus Torvalds <torvalds@linux-foundation.org> wrote: > On Tue, Mar 8, 2016 at 12:59 PM, Dan Williams <dan.j.williams@intel.com> wrote: >> >> Here's the usage patch from Toshi [1] (copied below). It is indeed a >> resource injected by nfit / nvdimm bus implementation. We just happen >> to support nfit and libnvdimm as modules. >> >> The goal of these patches is to use the ACPI NFIT data to create a >> "Persistent Memory" rather than "reserved" resource. This is for >> platform-firmware implementations that use E820-Type2 rather than >> E820-Type7 to describe pmem. > > So my worry is that there is likely exactly one or two of these kinds of sites. > > Why couldn't they just use insert_resource() and then remove it manually?
You mean instead of introducing a devm_insert_resource() as a helpful first-class-citizen api, just arrange for the resource to be inserted locally? Sure.
I assume Toshi was looking to keep the devm semantics like the rest of the nfit driver, but we can do that locally with devm_add_action() and skip the new general purpose api.
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