2 files changed, 3 insertions, 0 deletions

diff --git a/arch/sh/include/uapi/asm/cpu-features.h b/arch/sh/include/uapi/asm/cpu-features.h
index 694abe490edb..2f1bc851042a 100644
--- a/arch/sh/include/uapi/asm/cpu-features.h
+++ b/arch/sh/include/uapi/asm/cpu-features.h
@@ -22,5 +22,6 @@
 #define CPU_HAS_L2_CACHE        0x0080  /* Secondary cache / URAM */
 #define CPU_HAS_OP32            0x0100  /* 32-bit instruction support */
 #define CPU_HAS_PTEAEX          0x0200  /* PTE ASID Extension support */
+#define CPU_HAS_CAS_L           0x0400  /* cas.l atomic compare-and-swap */
 
 #endif /* __ASM_SH_CPU_FEATURES_H */
diff --git a/arch/sh/kernel/cpu/sh2/probe.c b/arch/sh/kernel/cpu/sh2/probe.c
index 152184007964..4205f6d42b69 100644
--- a/arch/sh/kernel/cpu/sh2/probe.c
+++ b/arch/sh/kernel/cpu/sh2/probe.c
@@ -57,6 +57,8 @@ void __ref cpu_probe(void)
         boot_cpu_data.dcache.entry_shift        = 5;
         boot_cpu_data.dcache.linesz             = 32;
         boot_cpu_data.dcache.flags              = 0;
+
+        boot_cpu_data.flags |= CPU_HAS_CAS_L;
 #else
         /*
          * SH-2 doesn't have separate caches