Greg:
This patch (as622) makes gadgetfs set the "zero" flag for control-IN
responses, when the length of the response is shorter than the length of
the request.
Alan Stern
Signed-off-by: Alan Stern <[EMAIL PROTECTED]>
---
Index: usb-2.6/drivers/usb/gadget/inode.c
===================================================================
--- usb-2.6.orig/drivers/usb/gadget/inode.c
+++ usb-2.6/drivers/usb/gadget/inode.c
@@ -135,6 +135,7 @@ struct dev_data {
setup_out_ready : 1,
setup_out_error : 1,
setup_abort : 1;
+ unsigned setup_wLength;
/* the rest is basically write-once */
struct usb_config_descriptor *config, *hs_config;
@@ -942,6 +943,7 @@ static int setup_req (struct usb_ep *ep,
}
req->complete = ep0_complete;
req->length = len;
+ req->zero = 0;
return 0;
}
@@ -1161,10 +1163,13 @@ ep0_write (struct file *fd, const char _
spin_unlock_irq (&dev->lock);
if (copy_from_user (dev->req->buf, buf, len))
retval = -EFAULT;
- else
+ else {
+ if (len < dev->setup_wLength)
+ dev->req->zero = 1;
retval = usb_ep_queue (
dev->gadget->ep0, dev->req,
GFP_KERNEL);
+ }
if (retval < 0) {
spin_lock_irq (&dev->lock);
clean_req (dev->gadget->ep0, dev->req);
@@ -1483,6 +1488,7 @@ unrecognized:
delegate:
dev->setup_in = (ctrl->bRequestType & USB_DIR_IN)
? 1 : 0;
+ dev->setup_wLength = w_length;
dev->setup_out_ready = 0;
dev->setup_out_error = 0;
value = 0;
-------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc. Do you grep through log files
for problems? Stop! Download the new AJAX search engine that makes
searching your log files as easy as surfing the web. DOWNLOAD SPLUNK!
http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click
_______________________________________________
linux-usb-devel@lists.sourceforge.net
To unsubscribe, use the last form field at:
https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
