Hi, On Mon, Mar 18, 2013 at 10:16:56AM -0400, Alan Stern wrote: > > > it would cause copious modification and duplication of ehci hcd > > > driver. For example, there is no "configured_flag" register in > > > fusbh200 controller, yet, ehci hcd driver accesses "configured_flag" > > > in function ehci_run which would cause compile errors. Therefore, > > > maybe my first patch which refers to oxu210hp-hcd is a better > > > solution? > > > > why don't you just add a quirk flag to ehci struct so that it knows it > > shouldn't access CONFIGFLAG register when that's non-existent ? > > > > There are only 5 uses of configured_flag in ehci-hcd.c, so it should be > > easy to wrap that around a flag check. > > Two of those uses turn configured_flag on and two of them turn it off. > However, one of the uses tests its value (the first one in > ehci_resume). How would that be handled if configured_flag doesn't > exist? perhaps they don't use it because they have a root-hub TT ? In that case you assume EHCI *always* owns the port. Would that work ? -- balbi
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