On Mon, 22 Jun 2009, Alek Du wrote: > From 7dc04f6d1feaa10f8e9c8d8edd4714f7dae8e92f Mon Sep 17 00:00:00 2001 > From: Alek Du <alek.du@xxxxxxxxx> > Date: Thu, 18 Jun 2009 16:52:48 +0800 > Subject: [PATCH] EHCI: split ehci_qh structure into hw and sw parts > > The ehci_qh structure merged hw and sw together which is not good: > 1. More and more items are being added into ehci_qh, the ehci_qh software > part are unnecessary to be allocated in DMA qh_pool. > 2. If HCD has local SRAM, the sw part will consume it too, and it won't > bring any benefit. > 3. For non-x86 system, the entire ehci_qh is uncachable, actually we > only need the hw part to be uncacheable. Split them will give the sw > part cacheable feature. > > Signed-off-by: Alek Du <alek.du@xxxxxxxxx> Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> I have not gone over this to verify every little detail, but in general it looks sane. However this is a significant change to the driver, so David really should approve it before it is merged. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
