As seen on GCC 4.6 Linaro compiler, control_req buffer is not aligned on 4 byte boundaray causing data aborts in eth_setup -> conf_buf during dhcp boot over usb_ether. Fix the issue my aligning control_req buffer to 4-byte boundary.
Tested on am335x_evm platform (beaglebone). Applies on 2013.10-rc1 branch.
Cc: Tom Rini trini@ti.com Signed-off-by: Joel Fernandes joelf@ti.com --- drivers/usb/gadget/ether.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c index 579893c..251d7b2 100644 --- a/drivers/usb/gadget/ether.c +++ b/drivers/usb/gadget/ether.c @@ -849,7 +849,7 @@ static struct usb_gadget_strings stringtab = { };
/*============================================================================*/ -static u8 control_req[USB_BUFSIZ]; +static u8 control_req[USB_BUFSIZ] __attribute__ ((aligned(4))); #if defined(CONFIG_USB_ETH_CDC) || defined(CONFIG_USB_ETH_RNDIS) static u8 status_req[STATUS_BYTECOUNT] __attribute__ ((aligned(4))); #endif