Patch "r8152: use test_and_clear_bit" has been added to the 4.4-stable tree

Patch "r8152: use test_and_clear_bit" has been added to the 4.4-stable tree

[gregkh]

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

    r8152: use test_and_clear_bit

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:
     r8152-use-test_and_clear_bit.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 <stable@vger.kernel.org> know about it.


>From 216a8349d3a0dd1bc2afbcc821e374c8f929bd62 Mon Sep 17 00:00:00 2001
From: hayeswang <hayeswang@realtek.com>
Date: Thu, 7 Jan 2016 17:51:11 +0800
Subject: r8152: use test_and_clear_bit

From: hayeswang <hayeswang@realtek.com>

commit 216a8349d3a0dd1bc2afbcc821e374c8f929bd62 upstream.

Replace test_bit() followed by clear_bit() with test_and_clear_bit().

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/usb/r8152.c |   20 ++++++--------------
 1 file changed, 6 insertions(+), 14 deletions(-)

--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -1947,7 +1947,6 @@ static void _rtl8152_set_rx_mode(struct
 	__le32 tmp[2];
 	u32 ocp_data;
 
-	clear_bit(RTL8152_SET_RX_MODE, &tp->flags);
 	netif_stop_queue(netdev);
 	ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_RCR);
 	ocp_data &= ~RCR_ACPT_ALL;
@@ -2433,8 +2432,6 @@ static void rtl_phy_reset(struct r8152 *
 	u16 data;
 	int i;
 
-	clear_bit(PHY_RESET, &tp->flags);
-
 	data = r8152_mdio_read(tp, MII_BMCR);
 
 	/* don't reset again before the previous one complete */
@@ -2893,10 +2890,9 @@ static int rtl8152_set_speed(struct r815
 	r8152_mdio_write(tp, MII_ADVERTISE, anar);
 	r8152_mdio_write(tp, MII_BMCR, bmcr);
 
-	if (test_bit(PHY_RESET, &tp->flags)) {
+	if (test_and_clear_bit(PHY_RESET, &tp->flags)) {
 		int i;
 
-		clear_bit(PHY_RESET, &tp->flags);
 		for (i = 0; i < 50; i++) {
 			msleep(20);
 			if ((r8152_mdio_read(tp, MII_BMCR) & BMCR_RESET) == 0)
@@ -2905,7 +2901,6 @@ static int rtl8152_set_speed(struct r815
 	}
 
 out:
-
 	return ret;
 }
 
@@ -2992,7 +2987,6 @@ static void set_carrier(struct r8152 *tp
 	struct net_device *netdev = tp->netdev;
 	u8 speed;
 
-	clear_bit(RTL8152_LINK_CHG, &tp->flags);
 	speed = rtl8152_get_speed(tp);
 
 	if (speed & LINK_STATUS) {
@@ -3042,20 +3036,18 @@ static void rtl_work_func_t(struct work_
 		goto out1;
 	}
 
-	if (test_bit(RTL8152_LINK_CHG, &tp->flags))
+	if (test_and_clear_bit(RTL8152_LINK_CHG, &tp->flags))
 		set_carrier(tp);
 
-	if (test_bit(RTL8152_SET_RX_MODE, &tp->flags))
+	if (test_and_clear_bit(RTL8152_SET_RX_MODE, &tp->flags))
 		_rtl8152_set_rx_mode(tp->netdev);
 
 	/* don't schedule napi before linking */
-	if (test_bit(SCHEDULE_NAPI, &tp->flags) &&
-	    netif_carrier_ok(tp->netdev)) {
-		clear_bit(SCHEDULE_NAPI, &tp->flags);
+	if (test_and_clear_bit(SCHEDULE_NAPI, &tp->flags) &&
+	    netif_carrier_ok(tp->netdev))
 		napi_schedule(&tp->napi);
-	}
 
-	if (test_bit(PHY_RESET, &tp->flags))
+	if (test_and_clear_bit(PHY_RESET, &tp->flags))
 		rtl_phy_reset(tp);
 
 	mutex_unlock(&tp->control);


Patches currently in stable-queue which might be from hayeswang@realtek.com are

queue-4.4/r8152-fix-the-wake-event.patch
queue-4.4/r8152-adjust-aldps-function.patch
queue-4.4/r8152-use-test_and_clear_bit.patch