ARM: 7541/1: Add ARM ERRATA 775420 workaround

[platform/adaptation/renesas_rcar/renesas_kernel.git] / arch / arm / mm / cache-v7.S

diff --git a/arch/arm/mm/cache-v7.S b/arch/arm/mm/cache-v7.S
index 39e3fb3..3b17227 100644 (file)
--- a/arch/arm/mm/cache-v7.S
+++ b/arch/arm/mm/cache-v7.S
@@ -211,6 +211,9 @@ ENTRY(v7_coherent_user_range)
  * isn't mapped, fail with -EFAULT.
  */
 9001:
+#ifdef CONFIG_ARM_ERRATA_775420
+       dsb
+#endif
        mov     r0, #-EFAULT
        mov     pc, lr
  UNWIND(.fnend         )