ARM: 8111/1: Enable erratum 798181 for Broadcom Brahma-B15

Broadcom Brahma-B15 (r0p0..r0p2) is also affected by Cortex-A15
erratum 798181, so enable the workaround for Brahma-B15.

Signed-off-by: Gregory Fong <gregory.0xf0@gmail.com>
Acked-by: Marc Carino <marc.ceeeee@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/kernel/smp_tlb.c

@@ -92,15 +92,19 @@ void erratum_a15_798181_init(void)
 	unsigned int midr = read_cpuid_id();
 	unsigned int revidr = read_cpuid(CPUID_REVIDR);
 
-	/* Cortex-A15 r0p0..r3p2 w/o ECO fix affected */
-	if ((midr & 0xff0ffff0) != 0x410fc0f0 || midr > 0x413fc0f2 ||
-	    (revidr & 0x210) == 0x210) {
-		return;
-	}
-	if (revidr & 0x10)
-		erratum_a15_798181_handler = erratum_a15_798181_partial;
-	else
+	/* Brahma-B15 r0p0..r0p2 affected
+	 * Cortex-A15 r0p0..r3p2 w/o ECO fix affected */
+	if ((midr & 0xff0ffff0) == 0x420f00f0 && midr <= 0x420f00f2)
 		erratum_a15_798181_handler = erratum_a15_798181_broadcast;
+	else if ((midr & 0xff0ffff0) == 0x410fc0f0 && midr <= 0x413fc0f2 &&
+		 (revidr & 0x210) != 0x210) {
+		if (revidr & 0x10)
+			erratum_a15_798181_handler =
+				erratum_a15_798181_partial;
+		else
+			erratum_a15_798181_handler =
+				erratum_a15_798181_broadcast;
+	}
 }
 #endif