From: Vincent Palatin <vpalatin@chromium.org>
Date: Wed, 6 Mar 2013 14:08:32 +0000 (+0000)
Subject: usb: ehci: Fix aliasing issue in EHCI interrupt code
X-Git-Tag: v2013.04-rc2~23^2~3
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=61755c7908be54a8221280cc801e65bc9d91dfad;p=oweals%2Fu-boot.git

usb: ehci: Fix aliasing issue in EHCI interrupt code

The interrupt endpoint handling code stores the buffer pointer in the QH
padding field. We need to make it the size of a pointer to avoid strict
aliasing issue with the compiler.

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>

Signed-off-by: Simon Glass <sjg@chromium.org>
---

diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index 46b535f36f..d090f0a53e 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -247,7 +247,7 @@ struct QH {
 	 * aligned to 32 bytes
 	 */
 	union {
-		uint8_t fill[16];
+		uint32_t fill[4];
 		void *buffer;
 	};
 };