[PATCH] rtlwifi: rtl8821ae: Fix HW_VAR_NAV_UPPER operation

[Dan Carpenter]

The cast here is wrong.  We want to cast the pointer but we accidentally
do a no-op cast of the value.  We normally want to set us_nav_upper to
WIFI_NAV_UPPER_US (30000) but because of this bug we instead set it to
184 on little endian systems and 0 on big endian ones.

Fixes: 3c05bedb5fef ("Staging: rtl8812ae: Add Realtek 8821 PCI WIFI driver")
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>

diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c 
b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c
index 2bc6bace069c..230f92a48f3c 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c
@@ -779,7 +779,7 @@ void rtl8821ae_set_hw_reg(struct ieee80211_hw *hw, u8 
variable, u8 *val)
                        _rtl8821ae_resume_tx_beacon(hw);
                break; }
        case HW_VAR_NAV_UPPER: {
-               u32     us_nav_upper = ((u32)*val);
+               u32     us_nav_upper = *(u32 *)val;
 
                if (us_nav_upper > HAL_92C_NAV_UPPER_UNIT * 0xFF) {
                        RT_TRACE(rtlpriv, COMP_INIT , DBG_WARNING,