Messages in this thread | | | Date | Tue, 27 May 2008 14:42:51 +0800 | From | "Dave Young" <> | Subject | Re: [PATCH 1/3][-mm] add class_reclassify macro |
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On Wed, May 21, 2008 at 1:21 AM, Greg KH <greg@kroah.com> wrote: > On Tue, May 20, 2008 at 03:02:32AM -0700, Andrew Morton wrote: >> On Tue, 20 May 2008 17:55:54 +0800 Dave Young <hidave.darkstar@gmail.com> wrote: >> >> > Converting class semaphore to mutex cause lockdep warnings due to >> > class_interface_register/unregister will possible call device_add/del >> >> Shouldn't we just fix that? > > Um, no, that's a "feature" that some types of hardware and interfaces > require. > > This is one reason I really don't like this type of conversion, it's > causing lots of problems for no known gain. > > So I would just recommend dropping this patch set, the current "convert > class semaphore to a mutex" patch in the -mm tree is already causing > lockdep warnings, and trying to do something like this isn't really > going to solve the root problem here.
At last, I decide to give up.
Andrew, I could not do more for this issue now, you can drop the conversion patch if there's no suitable fix from others.
Thanks Dave
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