diff options
| -rw-r--r-- | drivers/usb/gadget/udc/aspeed_udc.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/usb/gadget/udc/aspeed_udc.c b/drivers/usb/gadget/udc/aspeed_udc.c index d75a4e070bf7..01968e2167f9 100644 --- a/drivers/usb/gadget/udc/aspeed_udc.c +++ b/drivers/usb/gadget/udc/aspeed_udc.c @@ -476,6 +476,7 @@ static int ast_dma_descriptor_setup(struct ast_udc_ep *ep, u32 dma_buf, { struct ast_udc_dev *udc = ep->udc; struct device *dev = &udc->pdev->dev; + bool last = false; int chunk, count; u32 offset; @@ -493,14 +494,16 @@ static int ast_dma_descriptor_setup(struct ast_udc_ep *ep, u32 dma_buf, "tx_len", tx_len); /* Create Descriptor Lists */ - while (chunk > 0 && count < AST_UDC_DESCS_COUNT) { + while (chunk >= 0 && !last && count < AST_UDC_DESCS_COUNT) { ep->descs[ep->descs_wptr].des_0 = dma_buf + offset; - if (chunk > ep->chunk_max) + if (chunk > ep->chunk_max) { ep->descs[ep->descs_wptr].des_1 = ep->chunk_max; - else + } else { ep->descs[ep->descs_wptr].des_1 = chunk; + last = true; + } chunk -= ep->chunk_max; |