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.
--
balbi
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