usb: musb: Ensure rx reinit occurs for shared_fifo endpoints

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.

Signed-off-by: Andrew Goodbody <andrew.goodbody@cambrionix.com>
Cc: stable@vger.kernel.org
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 6 insertions, 7 deletions

diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index f0931c418f83..327f39c8c174 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -600,14 +600,13 @@ musb_rx_reinit(struct musb *musb, struct musb_qh *qh, u8 epnum)
                 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) {