diff --git a/target/linux/atheros/patches-3.18/100-board.patch b/target/linux/atheros/patches-3.18/100-board.patch
index abf19641bc..b224c3585b 100644
--- a/target/linux/atheros/patches-3.18/100-board.patch
+++ b/target/linux/atheros/patches-3.18/100-board.patch
@@ -436,7 +436,7 @@
 +#endif /* __ASM_MACH_ATH25_PLATFORM_H */
 --- /dev/null
 +++ b/arch/mips/include/asm/mach-ath25/cpu-feature-overrides.h
-@@ -0,0 +1,84 @@
+@@ -0,0 +1,64 @@
 +/*
 + *  Atheros AR231x/AR531x SoC specific CPU feature overrides
 + *
@@ -466,13 +466,6 @@
 +#define cpu_has_fpu			0
 +#define cpu_has_32fpr			0
 +#define cpu_has_counter			1
-+/* #define cpu_has_watch		? */
-+/* #define cpu_has_divec		? */
-+/* #define cpu_has_vce			? */
-+/* #define cpu_has_cache_cdex_p		? */
-+/* #define cpu_has_cache_cdex_s		? */
-+/* #define cpu_has_prefetch		? */
-+/* #define cpu_has_mcheck		? */
 +#define cpu_has_ejtag			1
 +
 +#if !defined(CONFIG_SOC_AR5312)
@@ -490,13 +483,6 @@
 +#define cpu_has_mips3d			0
 +#define cpu_has_smartmips		0
 +
-+/* #define cpu_has_vtag_icache		? */
-+/* #define cpu_has_dc_aliases		? */
-+/* #define cpu_has_ic_fills_f_dc	? */
-+/* #define cpu_has_pindexed_dcache	? */
-+
-+/* #define cpu_icache_snoops_remote_store	? */
-+
 +#define cpu_has_mips32r1		1
 +
 +#if !defined(CONFIG_SOC_AR5312)
@@ -509,17 +495,11 @@
 +#define cpu_has_dsp			0
 +#define cpu_has_mipsmt			0
 +
-+/* #define cpu_has_nofpuex		? */
 +#define cpu_has_64bits			0
 +#define cpu_has_64bit_zero_reg		0
 +#define cpu_has_64bit_gp_regs		0
 +#define cpu_has_64bit_addresses		0
 +
-+/* #define cpu_has_inclusive_pcaches	? */
-+
-+/* #define cpu_dcache_line_size()	? */
-+/* #define cpu_icache_line_size()	? */
-+
 +#endif /* __ASM_MACH_ATH25_CPU_FEATURE_OVERRIDES_H */
 --- /dev/null
 +++ b/arch/mips/include/asm/mach-ath25/dma-coherence.h