[U-Boot] [PATCH V3 07/20] usb: gadget: config: fix unaligned access issues

Troy Kisky
2013-08-01T23:27:24Z

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
---
drivers/usb/gadget/config.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/gadget/config.c b/drivers/usb/gadget/config.c
index f563afe..014a679 100644
--- a/drivers/usb/gadget/config.c
+++ b/drivers/usb/gadget/config.c
@@ -10,6 +10,7 @@
*/

#include <common.h>
+#include <asm/unaligned.h>
#include <asm/errno.h>
#include <linux/list.h>
#include <linux/string.h>
@@ -86,7 +87,8 @@ int usb_gadget_config_buf(
/* config descriptor first */
if (length < USB_DT_CONFIG_SIZE || !desc)
return -EINVAL;
- *cp = *config;
+ /* config need not be aligned */
+ memcpy(cp, config, sizeof(*cp));

/* then interface/endpoint/class/vendor/... */
len = usb_descriptor_fillbuf(USB_DT_CONFIG_SIZE + (u8 *)buf,
@@ -100,7 +102,7 @@ int usb_gadget_config_buf(
/* patch up the config descriptor */
cp->bLength = USB_DT_CONFIG_SIZE;
cp->bDescriptorType = USB_DT_CONFIG;
- cp->wTotalLength = cpu_to_le16(len);
+ put_unaligned_le16(len, &cp->wTotalLength);
cp->bmAttributes |= USB_CONFIG_ATT_ONE;
return len;
}
--
1.8.1.2