2010/12/13 Felipe Balbi <balbi@xxxxxx>: > Hi, > > On Mon, Dec 13, 2010 at 07:46:20PM +0800, Ming Lei wrote: >> >> No, only modprobe musb-omap2430 is enough, which has been OK now in >> my beagle with this patch set. >> >> If we want to run one single binary to support multiple machines and >> if glue driver can't be built as module, we have to load all glue driver >> into >> ram, which is sure very ugly. > > glue layer's probe() won't be called as musb-XXXX won't be available. So > no resources will be used, right ? It is right, but the glue code without device may consume some memory and does nothing since it have to be loaded always. If we can build glue layer driver as module, it will be loaded until there has the musb-XXXX device. So I think we should support to build glue driver as module to reduce memory footprint. see size of glue modules built with this patch set in my beagle-xm: -rw-rw-r-- 1 500 500 132068 Dec 13 2010 am35x.ko -rw-rw-r-- 1 500 500 135279 Dec 13 2010 omap2430.ko -rw-rw-r-- 1 500 500 152696 Dec 13 2010 tusb6010.ko -- Lei Ming -- 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
