Title: [6647] branches/2009R1/drivers/usb/musb/blackfin.c: bug[#4120]open the DMA polling mode,since the anomaly related to this bug can be workaround in ohter place
- Revision
- 6647
- Author
- cliff
- Date
- 2009-06-11 04:26:06 -0500 (Thu, 11 Jun 2009)
Log Message
bug[#4120]open the DMA polling mode,since the anomaly related to this bug can be workaround in ohter place
Modified Paths
Diff
Modified: branches/2009R1/drivers/usb/musb/blackfin.c (6646 => 6647)
--- branches/2009R1/drivers/usb/musb/blackfin.c 2009-06-11 09:22:41 UTC (rev 6646)
+++ branches/2009R1/drivers/usb/musb/blackfin.c 2009-06-11 09:26:06 UTC (rev 6647)
@@ -94,12 +94,9 @@
void musb_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst)
{
void __iomem *fifo = hw_ep->fifo;
-/* Sometimes,the DMA complete interrupt never happens,
- * this will cause the polling to dead loop.
- */
-#if 0
- u8 epnum = hw_ep->epnum;
- u16 dma_reg = 0;
+#if defined(CONFIG_MUSB_DMA_POLL)
+ u8 epnum = hw_ep->epnum;
+ u16 dma_reg = 0;
invalidate_dcache_range((unsigned int)dst,
(unsigned int)(dst + len));
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