Hi, On Tue, Jan 12, 2010 at 04:42:17PM +0100, ext Vikram Pandita wrote:
diff --git a/drivers/usb/musb/musbhsdma.c b/drivers/usb/musb/musbhsdma.c index a237550..f118ae2 100644 --- a/drivers/usb/musb/musbhsdma.c +++ b/drivers/usb/musb/musbhsdma.c @@ -166,6 +166,8 @@ static int dma_channel_program(struct dma_channel *channel, dma_addr_t dma_addr, u32 len) { struct musb_dma_channel *musb_channel = channel->private_data; + struct musb_dma_controller *controller = musb_channel->controller; + struct musb *musb = controller->private_data;DBG(2, "ep%d-%s pkt_sz %d, dma_addr 0x%x length %d, mode %d\n", musb_channel->epnum, @@ -175,6 +177,15 @@ static int dma_channel_program(struct dma_channel *channel, BUG_ON(channel->status == MUSB_DMA_STATUS_UNKNOWN || channel->status == MUSB_DMA_STATUS_BUSY); + /* On MUSB:RTL1.8 and above, DMA has to be word aligned */ + if ((dma_addr % 4) && + (musb->hwvers >= MUSB_HWVERS_1800)) {
is it only inventra dma that suffers from this ? If not, we could move this check before even calling the dma routine.
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