chore: update README.md

Signed-off-by: Rin Cat (鈴猫) <rincat@rincat.dev>

README.md

@@ -1,6 +1,6 @@
 # REALTEK RTL88x2B USB Linux Driver
 **Current Driver Version**: 5.13.1-30
-**Support Kernel**: 2.6.24 ~ 6.14 (with unofficial patches)
+**Support Kernel**: 2.6.24 ~ 6.15 (with unofficial patches)
 
 Linux in-tree rtw8822bu driver is a work in progress. Check [this](https://lore.kernel.org/lkml/20220518082318.3898514-1-s.hauer@pengutronix.de/) patchset.
 
@@ -8,6 +8,8 @@ For official release notes please check ReleaseNotes.pdf.
 
 **Note:** if you believe your device is **RTL8812BU** or **RTL8822BU** but after loading the module no NIC shows up, the device ID maybe not be in the driver whitelist. In this case, please submit a new issue with `lsusb` result, and your device name, brand, website, etc.
 
+This driver does *NOT* support newer Realtek 802.11ax (Wi-Fi 6) chipsets such as RTL8852BU.
+
 ## Linux 5.18+ and RTW88 Driver
 Starting from Linux 5.18, some distributions have added experimental RTW88 USB support (include RTW88x2BU support).
 It is not yet stable but if it works well on your system, then you no longer need this driver.

hal/phydm/phydm.mk

@@ -1,4 +1,4 @@
-EXTRA_CFLAGS += -I$(src)/hal/phydm
+ccflags-y += -I$(src)/hal/phydm
 
 _PHYDM_FILES := hal/phydm/phydm_debug.o	\
 								hal/phydm/phydm_antdiv.o\

hal/phydm/phydm_interface.c

@@ -725,11 +725,23 @@ void odm_initialize_timer(struct dm_struct *dm, struct phydm_timer_list *timer,
 void odm_cancel_timer(struct dm_struct *dm, struct phydm_timer_list *timer)
 {
 #if (DM_ODM_SUPPORT_TYPE & ODM_AP)
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 15, 0))
+	timer_delete(timer);
+#else
 	del_timer(timer);
+#endif
 #elif (DM_ODM_SUPPORT_TYPE & ODM_CE) && defined(DM_ODM_CE_MAC80211)
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 15, 0))
+	timer_delete(timer);
+#else
 	del_timer(timer);
+#endif
 #elif (DM_ODM_SUPPORT_TYPE & ODM_CE) && defined(DM_ODM_CE_MAC80211_V2)
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 15, 0))
+	timer_delete(&timer->timer);
+#else
 	del_timer(&timer->timer);
+#endif
 #elif (DM_ODM_SUPPORT_TYPE & ODM_CE)
 	_cancel_timer_ex(timer);
 #elif (DM_ODM_SUPPORT_TYPE & ODM_WIN)

hal/phydm/sd4_phydm_2_kernel.mk

@@ -1,4 +1,4 @@
-EXTRA_CFLAGS += -I$(src)/hal/phydm
+ccflags-y += -I$(src)/hal/phydm
 
 _PHYDM_FILES := hal/phydm/phydm_debug.o	\
 								hal/phydm/phydm_interface.o\

include/osdep_service_linux.h

@@ -387,12 +387,20 @@ __inline static void _set_timer(_timer *ptimer, u32 delay_time)
 
 __inline static void _cancel_timer(_timer *ptimer, u8 *bcancelled)
 {
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 15, 0))
+	*bcancelled = timer_delete_sync(&ptimer->timer) == 1 ? 1 : 0;
+#else
 	*bcancelled = del_timer_sync(&ptimer->timer) == 1 ? 1 : 0;
+#endif
 }
 
 __inline static void _cancel_timer_async(_timer *ptimer)
 {
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 15, 0))
+	timer_delete(&ptimer->timer);
+#else
 	del_timer(&ptimer->timer);
+#endif
 }
 
 static inline void _init_workitem(_workitem *pwork, void *pfunc, void *cntx)

rtl8822b.mk

@@ -1,8 +1,8 @@
-EXTRA_CFLAGS += -DCONFIG_RTL8822B
+ccflags-y += -DCONFIG_RTL8822B
 
 ifeq ($(CONFIG_MP_INCLUDED), y)
 ### 8822B Default Enable VHT MP HW TX MODE ###
-#EXTRA_CFLAGS += -DCONFIG_MP_VHT_HW_TX_MODE
+#ccflags-y += -DCONFIG_MP_VHT_HW_TX_MODE
 #CONFIG_MP_VHT_HW_TX_MODE = y
 endif