Hi,
On Mon, Nov 30, 2009 at 08:22:09AM +0100, ext Anand Gadiyar wrote:
static int dma_channel_program(struct dma_channel *channel,
u16 packet_sz, u8 mode,
dma_addr_t dma_addr, u32 len)
{
struct musb_dma_channel *musb_channel = channel->private_data;
+ struct musb_dma_controller *controller = musb_channel->controller;
DBG(2, "ep%d-%s pkt_sz %d, dma_addr 0x%x length %d, mode %d\n",
musb_channel->epnum,
@@ -175,6 +201,9 @@ static int dma_channel_program(struct dm
BUG_ON(channel->status == MUSB_DMA_STATUS_UNKNOWN ||
channel->status == MUSB_DMA_STATUS_BUSY);
+ if (!musb_okay_to_use_dma(controller, musb_channel->transmit))
+ return false;
how about returning error code. Maybe -EINVAL ??
--
balbi
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