diff --git a/kernel.mk b/kernel.mk
index ca38ac793dd7e648128101ba5be5eff52cb6c9d0..4b8cddf85b3ed1563e2ff24b076f37c2862d6ad9 100755
--- a/kernel.mk
+++ b/kernel.mk
@@ -70,11 +70,7 @@ export PRODUCT_PATH=vendor/hisilicon/hispark_taurus_linux
 $(KERNEL_IMAGE_FILE):
 	$(hide) echo "build kernel..."
 	$(hide) rm -rf $(KERNEL_SRC_TMP_PATH);mkdir -p $(KERNEL_SRC_TMP_PATH);cp -arfL $(KERNEL_SRC_PATH)/. $(KERNEL_SRC_TMP_PATH)/
-
-	$(hide) pushd $(KERNEL_SRC_TMP_PATH); \
-		# patch -p1 < $(DFX_PATCH_FILE);patch -p1 < $(HDF_PATCH_FILE); \
-		patch -p1 < $(HI3516DV300_PATCH_FILE); \
-		popd
+	$(hide) cd $(KERNEL_SRC_TMP_PATH) && patch -p1 < $(HI3516DV300_PATCH_FILE)
 	$(hide) cp -rf $(KERNEL_CONFIG_PATH)/. $(KERNEL_SRC_TMP_PATH)/
 	$(hide) $(KERNEL_MAKE) -C $(KERNEL_SRC_TMP_PATH) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) distclean
 	$(hide) $(KERNEL_MAKE) -C $(KERNEL_SRC_TMP_PATH) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) hi3516dv300_emmc_smp_hos_l2_defconfig
@@ -92,9 +88,7 @@ export PRODUCT_PATH=vendor/hisilicon/hispark_taurus_linux
 $(KERNEL_IMAGE_FILE):
 	$(hide) echo "build kernel..."
 	$(hide) rm -rf $(KERNEL_SRC_TMP_PATH);mkdir -p $(KERNEL_SRC_TMP_PATH);cp -arfL $(KERNEL_SRC_PATH)/. $(KERNEL_SRC_TMP_PATH)/
-	$(hide) pushd $(KERNEL_SRC_TMP_PATH);patch -p1 < $(DFX_PATCH_FILE);patch -p1 < $(HDF_PATCH_FILE); \
-		patch -p1 < $(HI3516DV300_PATCH_FILE); \
-		popd
+	$(hide) cd $(KERNEL_SRC_TMP_PATH) && patch -p1 < $(DFX_PATCH_FILE) && patch -p1 < $(HDF_PATCH_FILE) && patch -p1 < $(HI3516DV300_PATCH_FILE)
 	$(hide) cp -rf $(KERNEL_CONFIG_PATH)/. $(KERNEL_SRC_TMP_PATH)/
 	$(hide) $(KERNEL_MAKE) -C $(KERNEL_SRC_TMP_PATH) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) distclean
 	$(hide) $(KERNEL_MAKE) -C $(KERNEL_SRC_TMP_PATH) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) hi3516dv300_small_defconfig