From 695d0b4cedd9f45019cf9557ef2c925706437a2b Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Fri, 25 Dec 2009 10:06:22 +0000 Subject: [PATCH] ledtrig-netdev: use dev_get_stats to get statistics on kernels >=2.6.30 Fixes a possible NULL pointer dereference. git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18925 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../files-2.6.30/drivers/leds/ledtrig-netdev.c | 11 ++++------- .../files-2.6.31/drivers/leds/ledtrig-netdev.c | 11 ++++------- .../files-2.6.32/drivers/leds/ledtrig-netdev.c | 11 ++++------- 3 files changed, 12 insertions(+), 21 deletions(-) diff --git a/target/linux/generic-2.6/files-2.6.30/drivers/leds/ledtrig-netdev.c b/target/linux/generic-2.6/files-2.6.30/drivers/leds/ledtrig-netdev.c index 4193e4eda3..8dba8e654d 100644 --- a/target/linux/generic-2.6/files-2.6.30/drivers/leds/ledtrig-netdev.c +++ b/target/linux/generic-2.6/files-2.6.30/drivers/leds/ledtrig-netdev.c @@ -46,7 +46,7 @@ * link: LED's normal state reflects whether the link is up (has carrier) or not * tx: LED blinks on transmitted data * rx: LED blinks on receive data - * + * * Some suggestions: * * Simple link status LED: @@ -307,7 +307,7 @@ done: static void netdev_trig_timer(unsigned long arg) { struct led_netdev_data *trigger_data = (struct led_netdev_data *)arg; - struct net_device_stats *dev_stats; + const struct net_device_stats *dev_stats; unsigned new_activity; write_lock(&trigger_data->lock); @@ -317,11 +317,8 @@ static void netdev_trig_timer(unsigned long arg) led_set_brightness(trigger_data->led_cdev, ((trigger_data->mode & MODE_LINK) != 0 && trigger_data->link_up) ? LED_FULL : LED_OFF); goto no_restart; } -#ifdef CONFIG_COMPAT_NET_DEV_OPS - dev_stats = trigger_data->net_dev->get_stats(trigger_data->net_dev); -#else - dev_stats = trigger_data->net_dev->netdev_ops->ndo_get_stats(trigger_data->net_dev); -#endif + + dev_stats = dev_get_stats(trigger_data->net_dev); new_activity = ((trigger_data->mode & MODE_TX) ? dev_stats->tx_packets : 0) + ((trigger_data->mode & MODE_RX) ? dev_stats->rx_packets : 0); diff --git a/target/linux/generic-2.6/files-2.6.31/drivers/leds/ledtrig-netdev.c b/target/linux/generic-2.6/files-2.6.31/drivers/leds/ledtrig-netdev.c index 4193e4eda3..8dba8e654d 100644 --- a/target/linux/generic-2.6/files-2.6.31/drivers/leds/ledtrig-netdev.c +++ b/target/linux/generic-2.6/files-2.6.31/drivers/leds/ledtrig-netdev.c @@ -46,7 +46,7 @@ * link: LED's normal state reflects whether the link is up (has carrier) or not * tx: LED blinks on transmitted data * rx: LED blinks on receive data - * + * * Some suggestions: * * Simple link status LED: @@ -307,7 +307,7 @@ done: static void netdev_trig_timer(unsigned long arg) { struct led_netdev_data *trigger_data = (struct led_netdev_data *)arg; - struct net_device_stats *dev_stats; + const struct net_device_stats *dev_stats; unsigned new_activity; write_lock(&trigger_data->lock); @@ -317,11 +317,8 @@ static void netdev_trig_timer(unsigned long arg) led_set_brightness(trigger_data->led_cdev, ((trigger_data->mode & MODE_LINK) != 0 && trigger_data->link_up) ? LED_FULL : LED_OFF); goto no_restart; } -#ifdef CONFIG_COMPAT_NET_DEV_OPS - dev_stats = trigger_data->net_dev->get_stats(trigger_data->net_dev); -#else - dev_stats = trigger_data->net_dev->netdev_ops->ndo_get_stats(trigger_data->net_dev); -#endif + + dev_stats = dev_get_stats(trigger_data->net_dev); new_activity = ((trigger_data->mode & MODE_TX) ? dev_stats->tx_packets : 0) + ((trigger_data->mode & MODE_RX) ? dev_stats->rx_packets : 0); diff --git a/target/linux/generic-2.6/files-2.6.32/drivers/leds/ledtrig-netdev.c b/target/linux/generic-2.6/files-2.6.32/drivers/leds/ledtrig-netdev.c index 4193e4eda3..8dba8e654d 100644 --- a/target/linux/generic-2.6/files-2.6.32/drivers/leds/ledtrig-netdev.c +++ b/target/linux/generic-2.6/files-2.6.32/drivers/leds/ledtrig-netdev.c @@ -46,7 +46,7 @@ * link: LED's normal state reflects whether the link is up (has carrier) or not * tx: LED blinks on transmitted data * rx: LED blinks on receive data - * + * * Some suggestions: * * Simple link status LED: @@ -307,7 +307,7 @@ done: static void netdev_trig_timer(unsigned long arg) { struct led_netdev_data *trigger_data = (struct led_netdev_data *)arg; - struct net_device_stats *dev_stats; + const struct net_device_stats *dev_stats; unsigned new_activity; write_lock(&trigger_data->lock); @@ -317,11 +317,8 @@ static void netdev_trig_timer(unsigned long arg) led_set_brightness(trigger_data->led_cdev, ((trigger_data->mode & MODE_LINK) != 0 && trigger_data->link_up) ? LED_FULL : LED_OFF); goto no_restart; } -#ifdef CONFIG_COMPAT_NET_DEV_OPS - dev_stats = trigger_data->net_dev->get_stats(trigger_data->net_dev); -#else - dev_stats = trigger_data->net_dev->netdev_ops->ndo_get_stats(trigger_data->net_dev); -#endif + + dev_stats = dev_get_stats(trigger_data->net_dev); new_activity = ((trigger_data->mode & MODE_TX) ? dev_stats->tx_packets : 0) + ((trigger_data->mode & MODE_RX) ? dev_stats->rx_packets : 0);