From 208bd51396fb606dbdcf45b064e6b372d7dd3e81 Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Thu, 6 Aug 2015 17:54:13 +0800 Subject: [PATCH] arm: armv8 correct value passed to __asm_dcache_all >From source code comments: "x0: 0 flush & invalidate, 1 invalidate only" Current value 0xffff can make invalidate work, since we only judge whether input value is 0 or not, see following code: " tbz w1, #0, 1f dc isw, x9 b 2f 1: dc cisw, x9 /* clean & invalidate by set/way */ 2: subs x6, x6, #1 /* decrement the way */ " Later we may add "2 clean only" support. So following the comments, correct value from 0xffff to 1. Signed-off-by: Peng Fan Cc: York Sun Cc: Albert Aribaud --- arch/arm/cpu/armv8/cache.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/cpu/armv8/cache.S b/arch/arm/cpu/armv8/cache.S index d846236500..ab8c08917a 100644 --- a/arch/arm/cpu/armv8/cache.S +++ b/arch/arm/cpu/armv8/cache.S @@ -112,7 +112,7 @@ ENDPROC(__asm_flush_dcache_all) ENTRY(__asm_invalidate_dcache_all) mov x16, lr - mov x0, #0xffff + mov x0, #0x1 bl __asm_dcache_all mov lr, x16 ret