Merge tag 'spi-v3.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

[linux-imx.git] / arch / arm / include / asm / tlbflush.h

diff --git a/arch/arm/include/asm/tlbflush.h b/arch/arm/include/asm/tlbflush.h
index fdbb9e369745c4b09d776a4568caa52702b7e9a7..f467e9b3f8d5d5b35c1d6fce386c718eb1b21e8f 100644 (file)
--- a/arch/arm/include/asm/tlbflush.h
+++ b/arch/arm/include/asm/tlbflush.h
@@ -443,7 +443,18 @@ static inline void local_flush_bp_all(void)
                isb();
 }
 
+#include <asm/cputype.h>
 #ifdef CONFIG_ARM_ERRATA_798181
+static inline int erratum_a15_798181(void)
+{
+       unsigned int midr = read_cpuid_id();
+
+       /* Cortex-A15 r0p0..r3p2 affected */
+       if ((midr & 0xff0ffff0) != 0x410fc0f0 || midr > 0x413fc0f2)
+               return 0;
+       return 1;
+}
+
 static inline void dummy_flush_tlb_a15_erratum(void)
 {
        /*
@@ -453,6 +464,11 @@ static inline void dummy_flush_tlb_a15_erratum(void)
        dsb();
 }
 #else
+static inline int erratum_a15_798181(void)
+{
+       return 0;
+}
+
 static inline void dummy_flush_tlb_a15_erratum(void)
 {
 }