linux-kernel - [PATCH 3.12 024/119] cdc-acm: fix wrong pipe type on rx interrupt xfers

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Date:   Thu, 29 Sep 2016 12:24:20 +0200
From:   Jiri Slaby <jslaby@...e.cz>
To:     stable@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, Gavin Li <git@...gavinli.com>,
        Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 024/119] cdc-acm: fix wrong pipe type on rx interrupt xfers

From: Gavin Li <git@...gavinli.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit add125054b8727103631dce116361668436ef6a7 upstream.

This fixes the "BOGUS urb xfer" warning logged by usb_submit_urb().

Signed-off-by: Gavin Li <git@...gavinli.com>
Acked-by: Oliver Neukum <oneukum@...e.com>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 drivers/usb/class/cdc-acm.c | 5 ++---
 drivers/usb/class/cdc-acm.h | 1 -
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index ba6b978d9de4..2d269169d08b 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1205,7 +1205,6 @@ made_compressed_probe:
 	spin_lock_init(&acm->write_lock);
 	spin_lock_init(&acm->read_lock);
 	mutex_init(&acm->mutex);
-	acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress);
 	acm->is_int_ep = usb_endpoint_xfer_int(epread);
 	if (acm->is_int_ep)
 		acm->bInterval = epread->bInterval;
@@ -1254,14 +1253,14 @@ made_compressed_probe:
 		urb->transfer_dma = rb->dma;
 		if (acm->is_int_ep) {
 			usb_fill_int_urb(urb, acm->dev,
-					 acm->rx_endpoint,
+					 usb_rcvintpipe(usb_dev, epread->bEndpointAddress),
 					 rb->base,
 					 acm->readsize,
 					 acm_read_bulk_callback, rb,
 					 acm->bInterval);
 		} else {
 			usb_fill_bulk_urb(urb, acm->dev,
-					  acm->rx_endpoint,
+					  usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress),
 					  rb->base,
 					  acm->readsize,
 					  acm_read_bulk_callback, rb);
diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h
index 1683ac161cf6..bf4e1bb4fb27 100644
--- a/drivers/usb/class/cdc-acm.h
+++ b/drivers/usb/class/cdc-acm.h
@@ -95,7 +95,6 @@ struct acm {
 	struct urb *read_urbs[ACM_NR];
 	struct acm_rb read_buffers[ACM_NR];
 	int rx_buflimit;
-	int rx_endpoint;
 	spinlock_t read_lock;
 	int write_used;					/* number of non-empty write buffers */
 	int transmitting;
-- 
2.10.0