From a14164b03dedfb2ed1bdb12a091c56bee68fce4e Mon Sep 17 00:00:00 2001 From: Will Newton Date: Tue, 3 Jun 2008 16:15:01 +0100 Subject: [PATCH] fsl_usb2_udc: Add a wmb before priming endpoint. Add a wmb to fsl_queue_td before priming the endpoint. This ensures that the modifications to the QH are seen by the hardware. Signed-off-by: Will Newton --- drivers/usb/gadget/fsl_usb2_udc.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/usb/gadget/fsl_usb2_udc.c b/drivers/usb/gadget/fsl_usb2_udc.c index 1868754..dd06a5b 100644 --- a/drivers/usb/gadget/fsl_usb2_udc.c +++ b/drivers/usb/gadget/fsl_usb2_udc.c @@ -653,6 +653,8 @@ static int fsl_queue_td(struct fsl_ep *ep, struct fsl_req *req) | EP_QUEUE_HEAD_STATUS_HALT)); dQH->size_ioc_int_sts &= temp; + wmb(); + /* Prime endpoint by writing 1 to ENDPTPRIME */ temp = ep_is_in(ep) ? (1 << (ep_index(ep) + 16)) -- 1.5.5.2