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Commit b5403273 authored by hayeswang's avatar hayeswang Committed by David S. Miller
Browse files

r8152: add mutex for hw settings 



Use the mutex to avoid the settings are interrupted by other ones.

Signed-off-by: default avatarHayes Wang <hayeswang@realtek.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8d4a4d72

drivers/net/usb/r8152.c

+63 −1
Original line number Diff line number Diff line
@@ -26,7 +26,7 @@ 
#include <linux/mdio.h>



/* Version Information */

#define DRIVER_VERSION "v1.06.1 (2014/10/01)"

#define DRIVER_VERSION "v1.07.0 (2014/10/09)"

#define DRIVER_AUTHOR "Realtek linux nic maintainers <nic_swsd@realtek.com>"

#define DRIVER_DESC "Realtek RTL8152/RTL8153 Based USB Ethernet Adapters"

#define MODULENAME "r8152"
@@ -566,6 +566,7 @@ struct r8152 { 
	spinlock_t rx_lock, tx_lock;

	struct delayed_work schedule;

	struct mii_if_info mii;

	struct mutex control;	/* use for hw setting */



	struct rtl_ops {

		void (*init)(struct r8152 *);
@@ -977,12 +978,16 @@ static int rtl8152_set_mac_address(struct net_device *netdev, void *p) 
	if (ret < 0)

		goto out1;



	mutex_lock(&tp->control);



	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);



	ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_CONFIG);

	pla_ocp_write(tp, PLA_IDR, BYTE_EN_SIX_BYTES, 8, addr->sa_data);

	ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_NORAML);



	mutex_unlock(&tp->control);



	usb_autopm_put_interface(tp->intf);

out1:

	return ret;
@@ -2139,6 +2144,8 @@ static int rtl8152_set_features(struct net_device *dev, 
	if (ret < 0)

		goto out;



	mutex_lock(&tp->control);



	if (changed & NETIF_F_HW_VLAN_CTAG_RX) {

		if (features & NETIF_F_HW_VLAN_CTAG_RX)

			rtl_rx_vlan_en(tp, true);
@@ -2146,6 +2153,8 @@ static int rtl8152_set_features(struct net_device *dev, 
			rtl_rx_vlan_en(tp, false);

	}



	mutex_unlock(&tp->control);



	usb_autopm_put_interface(tp->intf);



out:
@@ -2847,6 +2856,11 @@ static void rtl_work_func_t(struct work_struct *work) 
	if (test_bit(RTL8152_UNPLUG, &tp->flags))

		goto out1;



	if (!mutex_trylock(&tp->control)) {

		schedule_delayed_work(&tp->schedule, 0);

		goto out1;

	}



	if (test_bit(RTL8152_LINK_CHG, &tp->flags))

		set_carrier(tp);
@@ -2862,6 +2876,8 @@ static void rtl_work_func_t(struct work_struct *work) 
	if (test_bit(PHY_RESET, &tp->flags))

		rtl_phy_reset(tp);



	mutex_unlock(&tp->control);



out1:

	usb_autopm_put_interface(tp->intf);

}
@@ -2881,6 +2897,8 @@ static int rtl8152_open(struct net_device *netdev) 
		goto out;

	}



	mutex_lock(&tp->control);



	/* The WORK_ENABLE may be set when autoresume occurs */

	if (test_bit(WORK_ENABLE, &tp->flags)) {

		clear_bit(WORK_ENABLE, &tp->flags);
@@ -2909,6 +2927,8 @@ static int rtl8152_open(struct net_device *netdev) 
		free_all_mem(tp);

	}



	mutex_unlock(&tp->control);



	usb_autopm_put_interface(tp->intf);



out:
@@ -2929,6 +2949,8 @@ static int rtl8152_close(struct net_device *netdev) 
	if (res < 0) {

		rtl_drop_queued_tx(tp);

	} else {

		mutex_lock(&tp->control);



		/* The autosuspend may have been enabled and wouldn't

		 * be disable when autoresume occurs, because the

		 * netif_running() would be false.
@@ -2941,6 +2963,9 @@ static int rtl8152_close(struct net_device *netdev) 
		tasklet_disable(&tp->tl);

		tp->rtl_ops.down(tp);

		tasklet_enable(&tp->tl);



		mutex_unlock(&tp->control);



		usb_autopm_put_interface(tp->intf);

	}
@@ -3165,6 +3190,8 @@ static int rtl8152_suspend(struct usb_interface *intf, pm_message_t message) 
{

	struct r8152 *tp = usb_get_intfdata(intf);



	mutex_lock(&tp->control);



	if (PMSG_IS_AUTO(message))

		set_bit(SELECTIVE_SUSPEND, &tp->flags);

	else
@@ -3184,6 +3211,8 @@ static int rtl8152_suspend(struct usb_interface *intf, pm_message_t message) 
		tasklet_enable(&tp->tl);

	}



	mutex_unlock(&tp->control);



	return 0;

}
@@ -3191,6 +3220,8 @@ static int rtl8152_resume(struct usb_interface *intf) 
{

	struct r8152 *tp = usb_get_intfdata(intf);



	mutex_lock(&tp->control);



	if (!test_bit(SELECTIVE_SUSPEND, &tp->flags)) {

		tp->rtl_ops.init(tp);

		netif_device_attach(tp->netdev);
@@ -3216,6 +3247,8 @@ static int rtl8152_resume(struct usb_interface *intf) 
		usb_submit_urb(tp->intr_urb, GFP_KERNEL);

	}



	mutex_unlock(&tp->control);



	return 0;

}
@@ -3226,9 +3259,13 @@ static void rtl8152_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 
	if (usb_autopm_get_interface(tp->intf) < 0)

		return;



	mutex_lock(&tp->control);



	wol->supported = WAKE_ANY;

	wol->wolopts = __rtl_get_wol(tp);



	mutex_unlock(&tp->control);



	usb_autopm_put_interface(tp->intf);

}
@@ -3241,9 +3278,13 @@ static int rtl8152_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 
	if (ret < 0)

		goto out_set_wol;



	mutex_lock(&tp->control);



	__rtl_set_wol(tp, wol->wolopts);

	tp->saved_wolopts = wol->wolopts & WAKE_ANY;



	mutex_unlock(&tp->control);



	usb_autopm_put_interface(tp->intf);



out_set_wol:
@@ -3287,8 +3328,12 @@ int rtl8152_get_settings(struct net_device *netdev, struct ethtool_cmd *cmd) 
	if (ret < 0)

		goto out;



	mutex_lock(&tp->control);



	ret = mii_ethtool_gset(&tp->mii, cmd);



	mutex_unlock(&tp->control);



	usb_autopm_put_interface(tp->intf);



out:
@@ -3304,8 +3349,12 @@ static int rtl8152_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) 
	if (ret < 0)

		goto out;



	mutex_lock(&tp->control);



	ret = rtl8152_set_speed(tp, cmd->autoneg, cmd->speed, cmd->duplex);



	mutex_unlock(&tp->control);



	usb_autopm_put_interface(tp->intf);



out:
@@ -3465,8 +3514,12 @@ rtl_ethtool_get_eee(struct net_device *net, struct ethtool_eee *edata) 
	if (ret < 0)

		goto out;



	mutex_lock(&tp->control);



	ret = tp->rtl_ops.eee_get(tp, edata);



	mutex_unlock(&tp->control);



	usb_autopm_put_interface(tp->intf);



out:
@@ -3483,10 +3536,14 @@ rtl_ethtool_set_eee(struct net_device *net, struct ethtool_eee *edata) 
	if (ret < 0)

		goto out;



	mutex_lock(&tp->control);



	ret = tp->rtl_ops.eee_set(tp, edata);

	if (!ret)

		ret = mii_nway_restart(&tp->mii);



	mutex_unlock(&tp->control);



	usb_autopm_put_interface(tp->intf);



out:
@@ -3528,7 +3585,9 @@ static int rtl8152_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 
		break;



	case SIOCGMIIREG:

		mutex_lock(&tp->control);

		data->val_out = r8152_mdio_read(tp, data->reg_num);

		mutex_unlock(&tp->control);

		break;



	case SIOCSMIIREG:
@@ -3536,7 +3595,9 @@ static int rtl8152_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) 
			res = -EPERM;

			break;

		}

		mutex_lock(&tp->control);

		r8152_mdio_write(tp, data->reg_num, data->val_in);

		mutex_unlock(&tp->control);

		break;



	default:
@@ -3729,6 +3790,7 @@ static int rtl8152_probe(struct usb_interface *intf, 
		goto out;



	tasklet_init(&tp->tl, bottom_half, (unsigned long)tp);

	mutex_init(&tp->control);

	INIT_DELAYED_WORK(&tp->schedule, rtl_work_func_t);



	netdev->netdev_ops = &rtl8152_netdev_ops;