On Fri, 12 Oct 2012, Ming Lei wrote: > > probably easiest for the runtime PM core to use tsk_set_allowd_gfp() > > before calling any runtime_resume method. > > Yes, it might be done in usb runtime resume context because all > usb device might include a mass storage interface. But, in fact, > we can find if there is one mass storage interface on the current > configuration easily inside usb_runtime_resume(). > > Also, we can loose the constraint in runtime PM core, before calling > runtime_resume callback for one device, the current context is marked > as ~GFP_IOFS only if it is a block device or there is one block device > descendant. But the approach becomes a bit complicated because > device tree traversing is involved. Exactly. It's much easier just to do it always. 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
