Title: [6675] trunk/drivers/usb/musb/musb_gadget.c: workaround RX DMA hang anomaly by disabling double buffer mode
- Revision
- 6675
- Author
- cliff
- Date
- 2009-06-11 22:14:39 -0500 (Thu, 11 Jun 2009)
Log Message
workaround RX DMA hang anomaly by disabling double buffer mode
Modified Paths
Diff
Modified: trunk/drivers/usb/musb/musb_gadget.c (6674 => 6675)
--- trunk/drivers/usb/musb/musb_gadget.c 2009-06-12 03:05:17 UTC (rev 6674)
+++ trunk/drivers/usb/musb/musb_gadget.c 2009-06-12 03:14:39 UTC (rev 6675)
@@ -957,8 +957,14 @@
/* REVISIT if can_bulk_combine() use by updating "tmp"
* likewise high bandwidth periodic rx
*/
- musb_writew(regs, MUSB_RXMAXP, tmp);
-
+#if defined(CONFIG_BLACKFIN) && ANOMALY_05000465
+ /* Set RXMAXP with the FIFO size of the endpoint
+ * to diable double buffer mode.
+ */
+ musb_writew(regs, MUSB_RXMAXP, hw_ep->max_packet_sz_rx);
+#elif
+ musb_writew(regs, MUSB_RXMAXP, tmp);
+#endif
/* force shared fifo to OUT-only mode */
if (hw_ep->is_shared_fifo) {
csr = musb_readw(regs, MUSB_TXCSR);
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