Date:   Wed, 4 Oct 2017 17:47:02 -0700
From:   Kees Cook <keescook@...omium.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Juliana Rodrigues <juliana.orod@...il.com>,
        Ivan Safonov <insafonov@...il.com>,
        Yamanappagouda Patil <goudapatilk@...il.com>,
        Kees Cook <keescook@...omium.org>,
        Shishir Kulkarni <shishir.kulkarni.2307@...il.com>,
        Gargi Sharma <gs051095@...il.com>,
        Janani Sankara Babu <jananis37@...il.com>,
        Himanshu Jha <himanshujha199640@...il.com>,
        Colin Ian King <colin.king@...onical.com>,
        Luca Ceresoli <luca@...aceresoli.net>,
        Carlos Maiolino <cmaiolino28@...il.com>,
        Armin Schoenlieb <armetallica@...il.com>,
        Aishwarya Pant <aishpant@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Johannes Berg <johannes.berg@...el.com>,
        Arnd Bergmann <arnd@...db.de>,
        Victor Carvajal <carva005@...il.com>,
        Sebastian Haas <sehaas@...bas.com>, devel@...verdev.osuosl.org,
        sayli karnik <karniksayli1995@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH] staging: rtl8188eu: Convert timers to use timer_setup()

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Juliana Rodrigues <juliana.orod@...il.com>
Cc: Ivan Safonov <insafonov@...il.com>
Cc: Gargi Sharma <gs051095@...il.com>
Cc: sayli karnik <karniksayli1995@...il.com>
Cc: Yamanappagouda Patil <goudapatilk@...il.com>
Cc: Luca Ceresoli <luca@...aceresoli.net>
Cc: Victor Carvajal <carva005@...il.com>
Cc: Sebastian Haas <sehaas@...bas.com>
Cc: devel@...verdev.osuosl.org
Cc: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Kees Cook <keescook@...omium.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/rtl8188eu/core/rtw_led.c         |  7 +++----
 drivers/staging/rtl8188eu/core/rtw_mlme.c        | 15 +++++++++------
 drivers/staging/rtl8188eu/core/rtw_mlme_ext.c    | 14 ++++++++------
 drivers/staging/rtl8188eu/core/rtw_pwrctrl.c     | 11 ++++++-----
 drivers/staging/rtl8188eu/core/rtw_recv.c        | 17 +++++++++--------
 drivers/staging/rtl8188eu/include/rtw_led.h      |  1 -
 drivers/staging/rtl8188eu/include/rtw_mlme.h     |  6 +++---
 drivers/staging/rtl8188eu/include/rtw_mlme_ext.h |  6 +++---
 drivers/staging/rtl8188eu/include/rtw_recv.h     |  2 +-
 drivers/staging/rtl8188eu/os_dep/mlme_linux.c    | 19 +++++++------------
 drivers/staging/rtl8188eu/os_dep/recv_linux.c    |  5 ++---
 11 files changed, 51 insertions(+), 52 deletions(-)

diff --git a/drivers/staging/rtl8188eu/core/rtw_led.c b/drivers/staging/rtl8188eu/core/rtw_led.c
index 1b9bc9817a57..c4335893d8f6 100644
--- a/drivers/staging/rtl8188eu/core/rtw_led.c
+++ b/drivers/staging/rtl8188eu/core/rtw_led.c
@@ -22,9 +22,9 @@
 /*		Callback function of LED BlinkTimer, */
 /*		it just schedules to corresponding BlinkWorkItem/led_blink_hdl */
 /*  */
-void BlinkTimerCallback(unsigned long data)
+static void BlinkTimerCallback(struct timer_list *t)
 {
-	struct LED_871x *pLed = (struct LED_871x *)data;
+	struct LED_871x *pLed = from_timer(pLed, t, BlinkTimer);
 	struct adapter *padapter = pLed->padapter;
 
 	if ((padapter->bSurpriseRemoved) || (padapter->bDriverStopped))
@@ -73,8 +73,7 @@ void InitLed871x(struct adapter *padapter, struct LED_871x *pLed)
 
 	ResetLedStatus(pLed);
 
-	setup_timer(&pLed->BlinkTimer, BlinkTimerCallback,
-		    (unsigned long)pLed);
+	timer_setup(&pLed->BlinkTimer, BlinkTimerCallback, 0);
 
 	INIT_WORK(&pLed->BlinkWorkItem, BlinkWorkItemCallback);
 }
diff --git a/drivers/staging/rtl8188eu/core/rtw_mlme.c b/drivers/staging/rtl8188eu/core/rtw_mlme.c
index f663e6c41f8a..390d5277954f 100644
--- a/drivers/staging/rtl8188eu/core/rtw_mlme.c
+++ b/drivers/staging/rtl8188eu/core/rtw_mlme.c
@@ -1332,9 +1332,10 @@ void rtw_cpwm_event_callback(struct adapter *padapter, u8 *pbuf)
  * _rtw_join_timeout_handler - Timeout/faliure handler for CMD JoinBss
  * @adapter: pointer to struct adapter structure
  */
-void _rtw_join_timeout_handler (unsigned long data)
+void _rtw_join_timeout_handler (struct timer_list *t)
 {
-	struct adapter *adapter = (struct adapter *)data;
+	struct adapter *adapter =
+		from_timer(adapter, t, mlmepriv.assoc_timer);
 	struct	mlme_priv *pmlmepriv = &adapter->mlmepriv;
 	int do_join_r;
 
@@ -1373,9 +1374,10 @@ void _rtw_join_timeout_handler (unsigned long data)
  * rtw_scan_timeout_handler - Timeout/Faliure handler for CMD SiteSurvey
  * @adapter: pointer to struct adapter structure
  */
-void rtw_scan_timeout_handler (unsigned long data)
+void rtw_scan_timeout_handler (struct timer_list *t)
 {
-	struct adapter *adapter = (struct adapter *)data;
+	struct adapter *adapter =
+		from_timer(adapter, t, mlmepriv.scan_to_timer);
 	struct	mlme_priv *pmlmepriv = &adapter->mlmepriv;
 
 	DBG_88E(FUNC_ADPT_FMT" fw_state=%x\n", FUNC_ADPT_ARG(adapter), get_fwstate(pmlmepriv));
@@ -1400,9 +1402,10 @@ static void rtw_auto_scan_handler(struct adapter *padapter)
 	}
 }
 
-void rtw_dynamic_check_timer_handlder(unsigned long data)
+void rtw_dynamic_check_timer_handlder(struct timer_list *t)
 {
-	struct adapter *adapter = (struct adapter *)data;
+	struct adapter *adapter =
+		from_timer(adapter, t, mlmepriv.dynamic_chk_timer);
 	struct registry_priv *pregistrypriv = &adapter->registrypriv;
 
 	if (!adapter)
diff --git a/drivers/staging/rtl8188eu/core/rtw_mlme_ext.c b/drivers/staging/rtl8188eu/core/rtw_mlme_ext.c
index 611c9409bb98..ab73f400f098 100644
--- a/drivers/staging/rtl8188eu/core/rtw_mlme_ext.c
+++ b/drivers/staging/rtl8188eu/core/rtw_mlme_ext.c
@@ -4788,9 +4788,10 @@ void linked_status_chk(struct adapter *padapter)
 	}
 }
 
-void survey_timer_hdl(unsigned long data)
+void survey_timer_hdl(struct timer_list *t)
 {
-	struct adapter *padapter = (struct adapter *)data;
+	struct adapter *padapter = from_timer(padapter, t,
+					    mlmeextpriv.link_timer);
 	struct cmd_obj	*ph2c;
 	struct sitesurvey_parm	*psurveyPara;
 	struct cmd_priv					*pcmdpriv = &padapter->cmdpriv;
@@ -4828,9 +4829,10 @@ void survey_timer_hdl(unsigned long data)
 	return;
 }
 
-void link_timer_hdl(unsigned long data)
+void link_timer_hdl(struct timer_list *t)
 {
-	struct adapter *padapter = (struct adapter *)data;
+	struct adapter *padapter = from_timer(padapter, t,
+					    mlmeextpriv.link_timer);
 	struct mlme_ext_priv	*pmlmeext = &padapter->mlmeextpriv;
 	struct mlme_ext_info	*pmlmeinfo = &(pmlmeext->mlmext_info);
 
@@ -4864,9 +4866,9 @@ void link_timer_hdl(unsigned long data)
 	}
 }
 
-void addba_timer_hdl(unsigned long data)
+void addba_timer_hdl(struct timer_list *t)
 {
-	struct sta_info *psta = (struct sta_info *)data;
+	struct sta_info *psta = from_timer(psta, t, addba_retry_timer);
 	struct ht_priv	*phtpriv;
 
 	if (!psta)
diff --git a/drivers/staging/rtl8188eu/core/rtw_pwrctrl.c b/drivers/staging/rtl8188eu/core/rtw_pwrctrl.c
index f86c9cebf09a..c9c3006966dd 100644
--- a/drivers/staging/rtl8188eu/core/rtw_pwrctrl.c
+++ b/drivers/staging/rtl8188eu/core/rtw_pwrctrl.c
@@ -276,9 +276,11 @@ void rtw_ps_processor(struct adapter *padapter)
 	pwrpriv->ps_processing = false;
 }
 
-static void pwr_state_check_handler(unsigned long data)
+static void pwr_state_check_handler(struct timer_list *t)
 {
-	struct adapter *padapter = (struct adapter *)data;
+	struct adapter *padapter =
+		from_timer(padapter, t,
+				pwrctrlpriv.pwr_state_check_timer);
 
 	rtw_ps_cmd(padapter);
 }
@@ -540,9 +542,8 @@ void rtw_init_pwrctrl_priv(struct adapter *padapter)
 
 	pwrctrlpriv->btcoex_rfon = false;
 
-	setup_timer(&pwrctrlpriv->pwr_state_check_timer,
-		    pwr_state_check_handler,
-		    (unsigned long)padapter);
+	timer_setup(&pwrctrlpriv->pwr_state_check_timer,
+		    pwr_state_check_handler, 0);
 }
 
 /*
diff --git a/drivers/staging/rtl8188eu/core/rtw_recv.c b/drivers/staging/rtl8188eu/core/rtw_recv.c
index 3fd5f4102b36..152aaf6612fd 100644
--- a/drivers/staging/rtl8188eu/core/rtw_recv.c
+++ b/drivers/staging/rtl8188eu/core/rtw_recv.c
@@ -39,7 +39,7 @@ static u8 rtw_rfc1042_header[] = {
        0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00
 };
 
-static void rtw_signal_stat_timer_hdl(unsigned long data);
+static void rtw_signal_stat_timer_hdl(struct timer_list *t);
 
 void _rtw_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv)
 {
@@ -86,9 +86,8 @@ int _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter)
 	}
 	res = rtw_hal_init_recv_priv(padapter);
 
-	setup_timer(&precvpriv->signal_stat_timer,
-		    rtw_signal_stat_timer_hdl,
-		    (unsigned long)padapter);
+	timer_setup(&precvpriv->signal_stat_timer, rtw_signal_stat_timer_hdl,
+		    0);
 
 	precvpriv->signal_stat_sampling_interval = 1000; /* ms */
 
@@ -1829,9 +1828,10 @@ static int recv_indicatepkt_reorder(struct adapter *padapter,
 	return _FAIL;
 }
 
-void rtw_reordering_ctrl_timeout_handler(unsigned long data)
+void rtw_reordering_ctrl_timeout_handler(struct timer_list *t)
 {
-	struct recv_reorder_ctrl *preorder_ctrl = (struct recv_reorder_ctrl *)data;
+	struct recv_reorder_ctrl *preorder_ctrl = from_timer(preorder_ctrl, t,
+							   reordering_ctrl_timer);
 	struct adapter *padapter = preorder_ctrl->padapter;
 	struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
 
@@ -1999,9 +1999,10 @@ s32 rtw_recv_entry(struct recv_frame *precvframe)
 	return ret;
 }
 
-static void rtw_signal_stat_timer_hdl(unsigned long data)
+static void rtw_signal_stat_timer_hdl(struct timer_list *t)
 {
-	struct adapter *adapter = (struct adapter *)data;
+	struct adapter *adapter =
+		from_timer(adapter, t, recvpriv.signal_stat_timer);
 	struct recv_priv *recvpriv = &adapter->recvpriv;
 
 	u32 tmp_s, tmp_q;
diff --git a/drivers/staging/rtl8188eu/include/rtw_led.h b/drivers/staging/rtl8188eu/include/rtw_led.h
index 607d1ba56a46..0d07a4eff7e3 100644
--- a/drivers/staging/rtl8188eu/include/rtw_led.h
+++ b/drivers/staging/rtl8188eu/include/rtw_led.h
@@ -91,7 +91,6 @@ struct led_priv {
 	/* add for led control */
 };
 
-void BlinkTimerCallback(unsigned long data);
 void BlinkWorkItemCallback(struct work_struct *work);
 
 void ResetLedStatus(struct LED_871x *pLed);
diff --git a/drivers/staging/rtl8188eu/include/rtw_mlme.h b/drivers/staging/rtl8188eu/include/rtw_mlme.h
index 5c5d0ae8bdd1..eff7b84b9579 100644
--- a/drivers/staging/rtl8188eu/include/rtw_mlme.h
+++ b/drivers/staging/rtl8188eu/include/rtw_mlme.h
@@ -325,10 +325,10 @@ void rtw_update_registrypriv_dev_network(struct adapter *adapter);
 
 void rtw_get_encrypt_decrypt_from_registrypriv(struct adapter *adapter);
 
-void _rtw_join_timeout_handler(unsigned long data);
-void rtw_scan_timeout_handler(unsigned long data);
+void _rtw_join_timeout_handler(struct timer_list *t);
+void rtw_scan_timeout_handler(struct timer_list *t);
 
-void rtw_dynamic_check_timer_handlder(unsigned long data);
+void rtw_dynamic_check_timer_handlder(struct timer_list *t);
 #define rtw_is_scan_deny(adapter) false
 #define rtw_clear_scan_deny(adapter) do {} while (0)
 #define rtw_set_scan_deny_timer_hdl(adapter) do {} while (0)
diff --git a/drivers/staging/rtl8188eu/include/rtw_mlme_ext.h b/drivers/staging/rtl8188eu/include/rtw_mlme_ext.h
index 1b1caaf583c9..f8b9fc2b586a 100644
--- a/drivers/staging/rtl8188eu/include/rtw_mlme_ext.h
+++ b/drivers/staging/rtl8188eu/include/rtw_mlme_ext.h
@@ -572,9 +572,9 @@ void mlmeext_sta_add_event_callback(struct adapter *padapter,
 
 void linked_status_chk(struct adapter *padapter);
 
-void survey_timer_hdl(unsigned long data);
-void link_timer_hdl(unsigned long data);
-void addba_timer_hdl(unsigned long data);
+void survey_timer_hdl(struct timer_list *t);
+void link_timer_hdl(struct timer_list *t);
+void addba_timer_hdl(struct timer_list *t);
 
 #define set_survey_timer(mlmeext, ms) \
 	mod_timer(&mlmeext->survey_timer, jiffies +	\
diff --git a/drivers/staging/rtl8188eu/include/rtw_recv.h b/drivers/staging/rtl8188eu/include/rtw_recv.h
index 121150860450..e9e97fd20dba 100644
--- a/drivers/staging/rtl8188eu/include/rtw_recv.h
+++ b/drivers/staging/rtl8188eu/include/rtw_recv.h
@@ -247,7 +247,7 @@ void rtw_free_recvframe_queue(struct __queue *pframequeue,
 			      struct __queue *pfree_recv_queue);
 u32 rtw_free_uc_swdec_pending_queue(struct adapter *adapter);
 
-void rtw_reordering_ctrl_timeout_handler(unsigned long data);
+void rtw_reordering_ctrl_timeout_handler(struct timer_list *t);
 
 static inline s32 translate_percentage_to_dbm(u32 sig_stren_index)
 {
diff --git a/drivers/staging/rtl8188eu/os_dep/mlme_linux.c b/drivers/staging/rtl8188eu/os_dep/mlme_linux.c
index bc756267c7fc..831c1ecc5e28 100644
--- a/drivers/staging/rtl8188eu/os_dep/mlme_linux.c
+++ b/drivers/staging/rtl8188eu/os_dep/mlme_linux.c
@@ -24,12 +24,10 @@ void rtw_init_mlme_timer(struct adapter *padapter)
 {
 	struct	mlme_priv *pmlmepriv = &padapter->mlmepriv;
 
-	setup_timer(&pmlmepriv->assoc_timer, _rtw_join_timeout_handler,
-		    (unsigned long)padapter);
-	setup_timer(&pmlmepriv->scan_to_timer, rtw_scan_timeout_handler,
-		    (unsigned long)padapter);
-	setup_timer(&pmlmepriv->dynamic_chk_timer,
-		    rtw_dynamic_check_timer_handlder, (unsigned long)padapter);
+	timer_setup(&pmlmepriv->assoc_timer, _rtw_join_timeout_handler, 0);
+	timer_setup(&pmlmepriv->scan_to_timer, rtw_scan_timeout_handler, 0);
+	timer_setup(&pmlmepriv->dynamic_chk_timer,
+		    rtw_dynamic_check_timer_handlder, 0);
 }
 
 void rtw_os_indicate_connect(struct adapter *adapter)
@@ -125,18 +123,15 @@ void rtw_report_sec_ie(struct adapter *adapter, u8 authmode, u8 *sec_ie)
 
 void init_addba_retry_timer(struct adapter *padapter, struct sta_info *psta)
 {
-	setup_timer(&psta->addba_retry_timer, addba_timer_hdl,
-		    (unsigned long)psta);
+	timer_setup(&psta->addba_retry_timer, addba_timer_hdl, 0);
 }
 
 void init_mlme_ext_timer(struct adapter *padapter)
 {
 	struct	mlme_ext_priv *pmlmeext = &padapter->mlmeextpriv;
 
-	setup_timer(&pmlmeext->survey_timer, survey_timer_hdl,
-		    (unsigned long)padapter);
-	setup_timer(&pmlmeext->link_timer, link_timer_hdl,
-		    (unsigned long)padapter);
+	timer_setup(&pmlmeext->survey_timer, survey_timer_hdl, 0);
+	timer_setup(&pmlmeext->link_timer, link_timer_hdl, 0);
 }
 
 #ifdef CONFIG_88EU_AP_MODE
diff --git a/drivers/staging/rtl8188eu/os_dep/recv_linux.c b/drivers/staging/rtl8188eu/os_dep/recv_linux.c
index d14bc2b68d98..bda4ab879f58 100644
--- a/drivers/staging/rtl8188eu/os_dep/recv_linux.c
+++ b/drivers/staging/rtl8188eu/os_dep/recv_linux.c
@@ -155,7 +155,6 @@ int rtw_recv_indicatepkt(struct adapter *padapter,
 void rtw_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl)
 {
 
-	setup_timer(&preorder_ctrl->reordering_ctrl_timer,
-		    rtw_reordering_ctrl_timeout_handler,
-		    (unsigned long)preorder_ctrl);
+	timer_setup(&preorder_ctrl->reordering_ctrl_timer,
+		    rtw_reordering_ctrl_timeout_handler, 0);
 }
-- 
2.7.4


-- 
Kees Cook
Pixel Security

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