From david-b@pacbell.net Fri Jan 20 17:25:17 2006 From: David Brownell To: Greg KH Subject: USB: gadget zero and dma-coherent buffers Date: Fri, 20 Jan 2006 14:38:49 -0800 Message-Id: <200601201438.49982.david-b@pacbell.net> This makes sure that the correct length is reported when freeing a dma-coherent buffer; some platforms complain if that's wrong. It also makes two parameters readonly in sysfs, as they're not safe to change while tests are running. Signed-off-by: David Brownell Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/zero.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) --- gregkh-2.6.orig/drivers/usb/gadget/zero.c +++ gregkh-2.6/drivers/usb/gadget/zero.c @@ -165,8 +165,8 @@ static unsigned buflen = 4096; static unsigned qlen = 32; static unsigned pattern = 0; -module_param (buflen, uint, S_IRUGO|S_IWUSR); -module_param (qlen, uint, S_IRUGO|S_IWUSR); +module_param (buflen, uint, S_IRUGO); +module_param (qlen, uint, S_IRUGO); module_param (pattern, uint, S_IRUGO|S_IWUSR); /* @@ -1127,8 +1127,10 @@ zero_unbind (struct usb_gadget *gadget) DBG (dev, "unbind\n"); /* we've already been disconnected ... no i/o is active */ - if (dev->req) + if (dev->req) { + dev->req->length = USB_BUFSIZ; free_ep_req (gadget->ep0, dev->req); + } del_timer_sync (&dev->resume); kfree (dev); set_gadget_data (gadget, NULL);