USB: musb: blackfin: work around anomaly 05000450

[pandora-kernel.git] / drivers / usb / musb / musbhsdma.c

diff --git a/drivers/usb/musb/musbhsdma.c b/drivers/usb/musb/musbhsdma.c
index 0144a2d..d281792 100644 (file)
--- a/drivers/usb/musb/musbhsdma.c
+++ b/drivers/usb/musb/musbhsdma.c
@@ -169,6 +169,14 @@ static int dma_channel_program(struct dma_channel *channel,
        BUG_ON(channel->status == MUSB_DMA_STATUS_UNKNOWN ||
                channel->status == MUSB_DMA_STATUS_BUSY);
 
+       /* Let targets check/tweak the arguments */
+       if (musb->ops->adjust_channel_params) {
+               int ret = musb->ops->adjust_channel_params(channel,
+                       packet_sz, &mode, &dma_addr, &len);
+               if (ret)
+                       return ret;
+       }
+
        /*
         * The DMA engine in RTL1.8 and above cannot handle
         * DMA addresses that are not aligned to a 4 byte boundary.