From: Paul Zimmerman <Paul.Zimmerman@synopsys.com>
Date: Fri, 30 Sep 2011 07:58:45 +0000 (+0300)
Subject: usb: dwc3: gadget: fix DMA offset calculation
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=c439ef87c33a1df30f528cb152151465c2529cac;p=~shefty%2Frdma-dev.git

usb: dwc3: gadget: fix DMA offset calculation

Fix offset calculation in dwc3_trb_dma_offset()

Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 16f2ba614fc..ee5c1a51971 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -189,7 +189,7 @@ int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
 static dma_addr_t dwc3_trb_dma_offset(struct dwc3_ep *dep,
 		struct dwc3_trb_hw *trb)
 {
-	u32		offset = trb - dep->trb_pool;
+	u32		offset = (char *) trb - (char *) dep->trb_pool;
 
 	return dep->trb_pool_dma + offset;
 }