Patch "usb: musb: Ensure rx reinit occurs for shared_fifo endpoints" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

usb: musb: Ensure rx reinit occurs for shared_fifo endpoints

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
usb-musb-ensure-rx-reinit-occurs-for-shared_fifo-endpoints.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Andrew Goodbody <[email protected]>
Date: Tue, 31 May 2016 10:05:26 -0500
Subject: usb: musb: Ensure rx reinit occurs for shared_fifo endpoints

From: Andrew Goodbody <[email protected]>

commit f3eec0cf784e0d6c47822ca6b66df3d5812af7e6 upstream.

shared_fifo endpoints would only get a previous tx state cleared out, the rx state was only cleared for non shared_fifo endpoints Change this so that the rx state is cleared for all endpoints. This addresses an issue that resulted in rx packets being dropped silently.

---
 drivers/usb/musb/musb_host.c |   13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

@@ -594,14 +594,13 @@ musb_rx_reinit(struct musb *musb, struct
 		musb_writew(ep->regs, MUSB_TXCSR, 0);
 
 	/* scrub all previous state, clearing toggle */
-	} else {
-		csr = musb_readw(ep->regs, MUSB_RXCSR);
-		if (csr & MUSB_RXCSR_RXPKTRDY)
-			WARNING("rx%d, packet/%d ready?\n", ep->epnum,
-				musb_readw(ep->regs, MUSB_RXCOUNT));
-
-		musb_h_flush_rxfifo(ep, MUSB_RXCSR_CLRDATATOG);
 	}
+	csr = musb_readw(ep->regs, MUSB_RXCSR);
+	if (csr & MUSB_RXCSR_RXPKTRDY)
+		WARNING("rx%d, packet/%d ready?\n", ep->epnum,
+			musb_readw(ep->regs, MUSB_RXCOUNT));
+
+	musb_h_flush_rxfifo(ep, MUSB_RXCSR_CLRDATATOG);
 
 	/* target addr and (for multipoint) hub addr/port */
 	if (musb->is_multipoint) {

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/usb-musb-stop-bulk-endpoint-while-queue-is-rotated.patch queue-4.4/usb-musb-ensure-rx-reinit-occurs-for-shared_fifo-endpoints.patch