USB: centralize -EREMOTEIO handling

This patch (as969) continues the ongoing changes to the way HCDs
report URB statuses.  The programming interface has been simplified by
making usbcore responsible for clearing urb->hcpriv and for setting
-EREMOTEIO status when an URB with the URB_SHORT_NOT_OK flag ends up
as a short transfer.

By moving the work out of the HCDs, this removes a fair amount of
repeated code.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: David Brownell <david-b@pacbell.net>
CC: Olav Kongas <ok@artecdesign.ee>
CC: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
CC: Tony Olech <tony.olech@elandigitalsystems.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 0 insertions, 11 deletions

diff --git a/drivers/usb/host/ohci-q.c b/drivers/usb/host/ohci-q.c
index 889c0720743b..8aad6199cdcc 100644
--- a/drivers/usb/host/ohci-q.c
+++ b/drivers/usb/host/ohci-q.c
@@ -43,21 +43,10 @@ __acquires(ohci->lock)
 	// ASSERT (urb->hcpriv != 0);
 
 	urb_free_priv (ohci, urb->hcpriv);
-	urb->hcpriv = NULL;
 
 	spin_lock (&urb->lock);
 	if (likely (urb->status == -EINPROGRESS))
 		urb->status = 0;
-	/* report short control reads right even though the data TD always
-	 * has TD_R set.  (much simpler, but creates the 1-td limit.)
-	 */
-	if (unlikely (urb->transfer_flags & URB_SHORT_NOT_OK)
-			&& unlikely (usb_pipecontrol (urb->pipe))
-			&& urb->actual_length < urb->transfer_buffer_length
-			&& usb_pipein (urb->pipe)
-			&& urb->status == 0) {
-		urb->status = -EREMOTEIO;
-	}
 	spin_unlock (&urb->lock);
 
 	switch (usb_pipetype (urb->pipe)) {