Compilation error for kernel version less than 5.8.0

[ramoneb]

My kernel version is: linux/version.h : 328192 = 5.2.0 When I try to compile the module I get this error: rtl8188eu/os_dep/ioctl_cfg80211.c:4423:6: error: 'upd' undeclared

In the source code of ioctl_cfg80211.c I found that we use the variable upd (ioctl_cfg80211.c:4423) even if the definition of cfg80211_rtw_mgmt_frame_register didn't include this parameter in case our kernel version is less than KERNEL_VERSION(5, 8, 0)

I suggest this patch:

diff --git a/os_dep/ioctl_cfg80211.c b/os_dep/ioctl_cfg80211.c
index 6ea8adf..fe231f2 100644
--- a/os_dep/ioctl_cfg80211.c
+++ b/os_dep/ioctl_cfg80211.c
@@ -4417,13 +4417,15 @@ static void cfg80211_rtw_mgmt_frame_register(struct wiphy *wiphy,
 {
        struct adapter *adapter = wiphy_to_adapter(wiphy);
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 8, 0))
-       u16 frame_type;
+       u16 frame_type = 0;
        bool reg = false;
 #endif
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 8, 0))
        if (upd->global_stypes < 11)
                frame_type = (u16)BIT(upd->global_stypes << 4);
        else
                frame_type = 0;
+#endif
 #ifdef CONFIG_DEBUG_CFG80211
        DBG_88E(FUNC_ADPT_FMT" frame_type:%x, reg:%d\n", FUNC_ADPT_ARG(adapter),
                frame_type, reg);

Regards