[PATCH 4.9 27/51] r8152: dont execute runtime suspend if the tx is not empty

[Greg Kroah-Hartman]

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

------------------

From: hayeswang <hayesw...@realtek.com>


[ Upstream commit 6a0b76c04ec157c88ca943debf78a8ee58469f2d ]

Runtime suspend shouldn't be executed if the tx queue is not empty,
because the device is not idle.

Signed-off-by: Hayes Wang <hayesw...@realtek.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/net/usb/r8152.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -32,7 +32,7 @@
 #define NETNEXT_VERSION                "08"
 
 /* Information for net */
-#define NET_VERSION            "6"
+#define NET_VERSION            "7"
 
 #define DRIVER_VERSION         "v1." NETNEXT_VERSION "." NET_VERSION
 #define DRIVER_AUTHOR "Realtek linux nic maintainers <nic_s...@realtek.com>"
@@ -3572,6 +3572,8 @@ static bool delay_autosuspend(struct r81
         */
        if (!sw_linking && tp->rtl_ops.in_nway(tp))
                return true;
+       else if (!skb_queue_empty(&tp->tx_queue))
+               return true;
        else
                return false;
 }