From 0b851be2737fa7533facfbf3be46678d180fee80 Mon Sep 17 00:00:00 2001 From: Paul Zimmerman Date: Mon, 25 Nov 2013 13:42:45 -0800 Subject: [PATCH] staging: dwc2: fix thinko in dwc2_fill_host_dma_desc() The check against MAX_DMA_DESC_SIZE didn't make sense, fix it Reported-by: Dan Carpenter Signed-off-by: Paul Zimmerman Signed-off-by: Greg Kroah-Hartman --- drivers/staging/dwc2/hcd_ddma.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/dwc2/hcd_ddma.c b/drivers/staging/dwc2/hcd_ddma.c index 72e9788c1a13..3376177e4d3c 100644 --- a/drivers/staging/dwc2/hcd_ddma.c +++ b/drivers/staging/dwc2/hcd_ddma.c @@ -621,8 +621,8 @@ static void dwc2_fill_host_dma_desc(struct dwc2_hsotg *hsotg, struct dwc2_hcd_dma_desc *dma_desc = &qh->desc_list[n_desc]; int len = chan->xfer_len; - if (len > MAX_DMA_DESC_SIZE) - len = MAX_DMA_DESC_SIZE - chan->max_packet + 1; + if (len > MAX_DMA_DESC_SIZE - (chan->max_packet - 1)) + len = MAX_DMA_DESC_SIZE - (chan->max_packet - 1); if (chan->ep_is_in) { int num_packets;