diff --git a/Makefile b/Makefile
index 72b81b8..9e2b673 100755
--- a/Makefile
+++ b/Makefile
@@ -1075,7 +1075,7 @@ EXTRA_CFLAGS += -DDM_ODM_SUPPORT_TYPE=0x04
 ifeq ($(CONFIG_PLATFORM_I386_PC), y)
 EXTRA_CFLAGS += -DCONFIG_LITTLE_ENDIAN
 EXTRA_CFLAGS += -DCONFIG_IOCTL_CFG80211 -DRTW_USE_CFG80211_STA_EVENT
-SUBARCH := $(shell uname -m | sed -e s/i.86/i386/)
+SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ | sed -e s/ppc64le/powerpc/)
 ARCH ?= $(SUBARCH)
 CROSS_COMPILE ?=
 KVER  := $(shell uname -r)
diff --git a/hal/hal_mp.c b/hal/hal_mp.c
index bf74a7a..6821e0c 100644
--- a/hal/hal_mp.c
+++ b/hal/hal_mp.c
@@ -960,7 +960,6 @@ void mpt_SetRFPath_8812A(PADAPTER pAdapter)
 	u8		bandwidth = pmp->bandwidth;
 	u8		eLNA_2g = pHalData->ExternalLNA_2G;
 	u32		ulAntennaTx, ulAntennaRx;
-	u32 reg0xC50 = 0;
 
 	ulAntennaTx = pHalData->antenna_tx_path;
 	ulAntennaRx = pHalData->AntennaRxPath;
@@ -991,6 +990,7 @@ void mpt_SetRFPath_8812A(PADAPTER pAdapter)
 	}
 
 	switch (ulAntennaRx) {
+	u32 reg0xC50;
 	case ANTENNA_A:
 		phy_set_bb_reg(pAdapter, rRxPath_Jaguar, bMaskByte0, 0x11);
 		phy_set_rf_reg(pAdapter, RF_PATH_B, RF_AC_Jaguar, 0xF0000, 0x1); /*/ RF_B_0x0[19:16] = 1, Standby mode*/