As part of removing the timer_list.data field, this converts the wilc1000 driver to using from_timer and an explicit per-timer data field, since there doesn't appear to be a way to sanely resolve vif from hif_drv.
Cc: Aditya Shankar <aditya.shan...@microchip.com> Cc: Ganesh Krishna <ganesh.kris...@microchip.com> Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org> Cc: linux-wireless@vger.kernel.org Cc: de...@driverdev.osuosl.org Cc: Thomas Gleixner <t...@linutronix.de> Signed-off-by: Kees Cook <keesc...@chromium.org> --- This requires commit 686fef928bba ("timer: Prepare to change timer callback argument type") in v4.14-rc3, but should be otherwise stand-alone. --- drivers/staging/wilc1000/host_interface.c | 39 +++++++++++++++++-------------- drivers/staging/wilc1000/host_interface.h | 5 ++++ 2 files changed, 27 insertions(+), 17 deletions(-) diff --git a/drivers/staging/wilc1000/host_interface.c b/drivers/staging/wilc1000/host_interface.c index 7b620658ec38..c16f96308a97 100644 --- a/drivers/staging/wilc1000/host_interface.c +++ b/drivers/staging/wilc1000/host_interface.c @@ -238,6 +238,7 @@ static struct completion hif_driver_comp; static struct completion hif_wait_response; static struct mutex hif_deinit_lock; static struct timer_list periodic_rssi; +static struct wilc_vif *periodic_rssi_vif; u8 wilc_multicast_mac_addr_list[WILC_MULTICAST_TABLE_SIZE][ETH_ALEN]; @@ -2272,7 +2273,7 @@ static int Handle_RemainOnChan(struct wilc_vif *vif, ERRORHANDLER: { P2P_LISTEN_STATE = 1; - hif_drv->remain_on_ch_timer.data = (unsigned long)vif; + hif_drv->remain_on_ch_timer_vif = vif; mod_timer(&hif_drv->remain_on_ch_timer, jiffies + msecs_to_jiffies(pstrHostIfRemainOnChan->duration)); @@ -2360,11 +2361,13 @@ static u32 Handle_ListenStateExpired(struct wilc_vif *vif, return result; } -static void ListenTimerCB(unsigned long arg) +static void ListenTimerCB(struct timer_list *t) { + struct host_if_drv *hif_drv = from_timer(hif_drv, t, + remain_on_ch_timer); + struct wilc_vif *vif = hif_drv->remain_on_ch_timer_vif; s32 result = 0; struct host_if_msg msg; - struct wilc_vif *vif = (struct wilc_vif *)arg; del_timer(&vif->hif_drv->remain_on_ch_timer); @@ -2643,9 +2646,10 @@ static void host_if_work(struct work_struct *work) complete(&hif_thread_comp); } -static void TimerCB_Scan(unsigned long arg) +static void TimerCB_Scan(struct timer_list *t) { - struct wilc_vif *vif = (struct wilc_vif *)arg; + struct host_if_drv *hif_drv = from_timer(hif_drv, t, scan_timer); + struct wilc_vif *vif = hif_drv->scan_timer_vif; struct host_if_msg msg; memset(&msg, 0, sizeof(struct host_if_msg)); @@ -2655,9 +2659,11 @@ static void TimerCB_Scan(unsigned long arg) wilc_enqueue_cmd(&msg); } -static void TimerCB_Connect(unsigned long arg) +static void TimerCB_Connect(struct timer_list *t) { - struct wilc_vif *vif = (struct wilc_vif *)arg; + struct host_if_drv *hif_drv = from_timer(hif_drv, t, + connect_timer); + struct wilc_vif *vif = hif_drv->connect_timer_vif; struct host_if_msg msg; memset(&msg, 0, sizeof(struct host_if_msg)); @@ -3040,7 +3046,7 @@ int wilc_set_join_req(struct wilc_vif *vif, u8 *bssid, const u8 *ssid, return -EFAULT; } - hif_drv->connect_timer.data = (unsigned long)vif; + hif_drv->connect_timer_vif = vif; mod_timer(&hif_drv->connect_timer, jiffies + msecs_to_jiffies(HOST_IF_CONNECT_TIMEOUT)); @@ -3283,7 +3289,7 @@ int wilc_scan(struct wilc_vif *vif, u8 scan_source, u8 scan_type, return -EINVAL; } - hif_drv->scan_timer.data = (unsigned long)vif; + hif_drv->scan_timer_vif = vif; mod_timer(&hif_drv->scan_timer, jiffies + msecs_to_jiffies(HOST_IF_SCAN_TIMEOUT)); @@ -3309,9 +3315,9 @@ int wilc_hif_set_cfg(struct wilc_vif *vif, return wilc_enqueue_cmd(&msg); } -static void GetPeriodicRSSI(unsigned long arg) +static void GetPeriodicRSSI(struct timer_list *unused) { - struct wilc_vif *vif = (struct wilc_vif *)arg; + struct wilc_vif *vif = periodic_rssi_vif; if (!vif->hif_drv) { netdev_err(vif->ndev, "Driver handler is NULL\n"); @@ -3321,7 +3327,6 @@ static void GetPeriodicRSSI(unsigned long arg) if (vif->hif_drv->hif_state == HOST_IF_CONNECTED) wilc_get_statistics(vif, &vif->wilc->dummy_statistics); - periodic_rssi.data = (unsigned long)vif; mod_timer(&periodic_rssi, jiffies + msecs_to_jiffies(5000)); } @@ -3374,14 +3379,14 @@ int wilc_init(struct net_device *dev, struct host_if_drv **hif_drv_handler) goto _fail_; } - setup_timer(&periodic_rssi, GetPeriodicRSSI, - (unsigned long)vif); + periodic_rssi_vif = vif; + timer_setup(&periodic_rssi, GetPeriodicRSSI, 0); mod_timer(&periodic_rssi, jiffies + msecs_to_jiffies(5000)); } - setup_timer(&hif_drv->scan_timer, TimerCB_Scan, 0); - setup_timer(&hif_drv->connect_timer, TimerCB_Connect, 0); - setup_timer(&hif_drv->remain_on_ch_timer, ListenTimerCB, 0); + timer_setup(&hif_drv->scan_timer, TimerCB_Scan, 0); + timer_setup(&hif_drv->connect_timer, TimerCB_Connect, 0); + timer_setup(&hif_drv->remain_on_ch_timer, ListenTimerCB, 0); mutex_init(&hif_drv->cfg_values_lock); mutex_lock(&hif_drv->cfg_values_lock); diff --git a/drivers/staging/wilc1000/host_interface.h b/drivers/staging/wilc1000/host_interface.h index 1ce5ead318c7..65734c38bf43 100644 --- a/drivers/staging/wilc1000/host_interface.h +++ b/drivers/staging/wilc1000/host_interface.h @@ -279,8 +279,13 @@ struct host_if_drv { struct completion comp_inactive_time; struct timer_list scan_timer; + struct wilc_vif *scan_timer_vif; + struct timer_list connect_timer; + struct wilc_vif *connect_timer_vif; + struct timer_list remain_on_ch_timer; + struct wilc_vif *remain_on_ch_timer_vif; bool IFC_UP; int driver_handler_id; -- 2.7.4 -- Kees Cook Pixel Security