---

yaml --- r: 325974 b: refs/heads/master c: 603fe2b h: refs/heads/master v: v3
git-mirror · Aug 3, 2012 · 75d585f · 75d585f
1 parent 55c168f
commit 75d585f
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Showing 2 changed files with 7 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d17d535fec07dbd298b3f65838ec8d63c26ab360
+refs/heads/master: 603fe2b21d9fcde2022f9b52d95027bea29fe9e3
diff --git a/trunk/drivers/usb/musb/musb_core.c b/trunk/drivers/usb/musb/musb_core.c
@@ -234,6 +234,9 @@ void musb_write_fifo(struct musb_hw_ep *hw_ep, u16 len, const u8 *src)
 	struct musb *musb = hw_ep->musb;
 	void __iomem *fifo = hw_ep->fifo;
 
+	if (unlikely(len == 0))
+		return;
+
 	prefetch((u8 *)src);
 
 	dev_dbg(musb->controller, "%cX ep%d fifo %p count %d buf %p\n",
@@ -276,6 +279,9 @@ void musb_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst)
 	struct musb *musb = hw_ep->musb;
 	void __iomem *fifo = hw_ep->fifo;
 
+	if (unlikely(len == 0))
+		return;
+
 	dev_dbg(musb->controller, "%cX ep%d fifo %p count %d buf %p\n",
 			'R', hw_ep->epnum, fifo, len, dst);