On Mon, Aug 04, 2008 at 06:48:22PM +0530, ext Gadiyar, Anand wrote: > MUSB RTL v1.4 has a hardware issue which results in a DMA controller > hang when TX and RX DMA channels are simultaneously enabled. This > affects at least OMAP2430 and OMAP34XX. > > Since RX transfers are in Mode 0 and anyway result in one DMA interrupt > per packet, we can use System DMA to unload the RX fifos. MUSB DMA can > be used for all TX channels as before. > > Tested with full-duplex TX and RX transfers using g_ether. Runs for 24 > hours without a hang. Without this patch, the hang occurs within minutes. I just don't like that amount of ifdefs, as we were discussing out of the list we should use runtime checks where possible. Let's wait on this one since Anand will send another patch set later on this week. -- balbi -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
