ARM: enable ARM errata 643719 workaround by default

The effects of not having ARM errata 643719 enabled on affected CPUs
can be very confusing and hard to debug.  Rather than leave this to
chance, enable this workaround by default.  Now that we have rearranged
the code, it should have a low impact on the majority of CPUs.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 35fed4b1ebd87af4b98d2b19cd88035b7404c609..bca01e280bbec7fa2ed90a6e17b7ffcd759df0c9 100644 (file)
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1127,6 +1127,7 @@ config ARM_ERRATA_742231
 config ARM_ERRATA_643719
        bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
        depends on CPU_V7 && SMP
+       default y
        help
          This option enables the workaround for the 643719 Cortex-A9 (prior to
          r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR