From bed205c14a363fedd8b3a497ef0141588b610d50 Mon Sep 17 00:00:00 2001
From: xyzz <1065521+xyzz@users.noreply.github.com>
Date: Mon, 12 Feb 2018 21:33:26 -0500
Subject: [PATCH] Fix timers (#244)

This commit adds support for kernel 4.15, which changed the timer
interface.

Additionally this reverts commit ee9ad6c3483c77be5600075fcf43a41129ffe71f
---
 hal/OUTSRC/phydm_types.h      | 12 ++++++++++--
 include/osdep_service.h       |  4 ++++
 include/osdep_service_linux.h | 37 ++++++++++++++++++++++++++++-------
 3 files changed, 44 insertions(+), 9 deletions(-)

diff --git a/hal/OUTSRC/phydm_types.h b/hal/OUTSRC/phydm_types.h
index bfd5296..b9384a4 100644
--- a/hal/OUTSRC/phydm_types.h
+++ b/hal/OUTSRC/phydm_types.h
@@ -193,7 +193,11 @@ typedef long long				s8Byte,*ps8Byte;
 
 typedef struct rtl8192cd_priv	*prtl8192cd_priv;
 typedef struct stat_info		STA_INFO_T,*PSTA_INFO_T;
-typedef struct timer_list		RT_TIMER, *PRT_TIMER;
+#if defined (LINUX_VERSION_CODE) && (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0))
+	typedef struct legacy_timer_emu		RT_TIMER, *PRT_TIMER;
+#else
+	typedef struct timer_list		RT_TIMER, *PRT_TIMER;
+#endif
 typedef  void *				RT_TIMER_CALL_BACK;
 
 #ifdef CONFIG_PCI_HCI
@@ -262,7 +266,11 @@ typedef s64					s8Byte,*ps8Byte;
 #define	ODM_ENDIAN_TYPE			ODM_ENDIAN_BIG
 #endif
 
-typedef struct timer_list		RT_TIMER, *PRT_TIMER;
+#if defined (LINUX_VERSION_CODE) && (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0))
+	typedef struct legacy_timer_emu		RT_TIMER, *PRT_TIMER;
+#else
+	typedef struct timer_list		RT_TIMER, *PRT_TIMER;
+#endif
 typedef  void *				RT_TIMER_CALL_BACK;
 #define	STA_INFO_T			struct sta_info
 #define	PSTA_INFO_T		struct sta_info *
diff --git a/include/osdep_service.h b/include/osdep_service.h
index 657a7b8..1662e4a 100644
--- a/include/osdep_service.h
+++ b/include/osdep_service.h
@@ -319,8 +319,12 @@ extern void rtw_init_timer(_timer *ptimer, void *padapter, void *pfunc);
 __inline static unsigned char _cancel_timer_ex(_timer *ptimer)
 {
 #ifdef PLATFORM_LINUX
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0))
+	return del_timer_sync(&ptimer->t);
+#else
 	return del_timer_sync(ptimer);
 #endif
+#endif
 #ifdef PLATFORM_FREEBSD
 	_cancel_timer(ptimer,0);
 	return 0;
diff --git a/include/osdep_service_linux.h b/include/osdep_service_linux.h
index 0b85417..b09ab5d 100644
--- a/include/osdep_service_linux.h
+++ b/include/osdep_service_linux.h
@@ -134,7 +134,15 @@ typedef struct mutex 		_mutex;
 #else
 typedef struct semaphore	_mutex;
 #endif
-typedef struct timer_list _timer;
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0))
+	typedef struct legacy_timer_emu {
+		struct timer_list t;
+		void (*function)(unsigned long);
+		unsigned long data;
+	} _timer;
+#else
+	typedef struct timer_list _timer;
+#endif
 
 struct	__queue {
 	struct	list_head	queue;
@@ -267,27 +275,42 @@ __inline static void rtw_list_delete(_list *plist)
 
 #define RTW_TIMER_HDL_ARGS void *FunctionContext
 
-__inline static void _init_timer(_timer *ptimer,_nic_hdl nic_hdl,void *pfunc,void* cntx)
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0))
+static void legacy_timer_emu_func(struct timer_list *t)
+{
+	struct legacy_timer_emu *lt = from_timer(lt, t, t);
+	lt->function(lt->data);
+}
+#endif
+__inline static void _init_timer(_timer *ptimer, _nic_hdl nic_hdl, void *pfunc, void *cntx)
 {
 	//setup_timer(ptimer, pfunc,(u32)cntx);
 	ptimer->function = pfunc;
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0))
 	ptimer->data = (unsigned long)cntx;
-	init_timer(ptimer);
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0))
+	timer_setup(&ptimer->t, legacy_timer_emu_func, 0);
 #else
-	timer_setup(ptimer, pfunc, 0);
+	init_timer(ptimer);
 #endif
 }
 
 __inline static void _set_timer(_timer *ptimer,u32 delay_time)
 {
-	mod_timer(ptimer , (jiffies+(delay_time*HZ/1000)));
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0))
+	mod_timer(&ptimer->t, (jiffies+(delay_time*HZ/1000)));
+#else
+	mod_timer(ptimer , (jiffies + (delay_time * HZ / 1000)));
+#endif
 }
 
 __inline static void _cancel_timer(_timer *ptimer,u8 *bcancelled)
 {
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0))
+	del_timer_sync(&ptimer->t);
+#else
 	del_timer_sync(ptimer);
-	*bcancelled=  _TRUE;//TRUE ==1; FALSE==0
+#endif
+	*bcancelled = 1;
 }