From: Vineet Gupta <vgupta@synopsys.com>
Date: Mon, 24 Feb 2014 03:42:50 +0000 (+0800)
Subject: ARC: [SMP] General Fixes
X-Git-Tag: submit/tizen/20160422.055611~1^2~99^2~11^2~239
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4e9a988e6b564b42e01c8b6a0ada617089b8cfed;p=sdk%2Femulator%2Femulator-kernel.git

ARC: [SMP] General Fixes

commit c3441edd2dea83923421fd6050d2ffdc57696323 upstream.

-Pass the expected arg to non-boot park'ing routine
 (It worked so far because existing SMP backends don't use the arg)

-CONFIG_DEBUG_PREEMPT warning

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/arch/arc/kernel/head.S b/arch/arc/kernel/head.S
index 991997269d02..4ad04915dc6b 100644
--- a/arch/arc/kernel/head.S
+++ b/arch/arc/kernel/head.S
@@ -24,13 +24,13 @@
 	.globl stext
 stext:
 	;-------------------------------------------------------------------
-	; Don't clobber r0-r4 yet. It might have bootloader provided info
+	; Don't clobber r0-r2 yet. It might have bootloader provided info
 	;-------------------------------------------------------------------
 
 	sr	@_int_vec_base_lds, [AUX_INTR_VEC_BASE]
 
 #ifdef CONFIG_SMP
-	; Only Boot (Master) proceeds. Others wait in platform dependent way
+	; Ensure Boot (Master) proceeds. Others wait in platform dependent way
 	;	IDENTITY Reg [ 3  2  1  0 ]
 	;	(cpu-id)             ^^^	=> Zero for UP ARC700
 	;					=> #Core-ID if SMP (Master 0)
@@ -39,7 +39,8 @@ stext:
 	; need to make sure only boot cpu takes this path.
 	GET_CPU_ID  r5
 	cmp	r5, 0
-	jnz	arc_platform_smp_wait_to_boot
+	mov.ne	r0, r5
+	jne	arc_platform_smp_wait_to_boot
 #endif
 	; Clear BSS before updating any globals
 	; XXX: use ZOL here
diff --git a/arch/arc/mm/cache_arc700.c b/arch/arc/mm/cache_arc700.c
index 400c663b21c2..89edf7961a2f 100644
--- a/arch/arc/mm/cache_arc700.c
+++ b/arch/arc/mm/cache_arc700.c
@@ -100,10 +100,9 @@
 #define DC_CTRL_INV_MODE_FLUSH  0x40
 #define DC_CTRL_FLUSH_STATUS    0x100
 
-char *arc_cache_mumbojumbo(int cpu_id, char *buf, int len)
+char *arc_cache_mumbojumbo(int c, char *buf, int len)
 {
 	int n = 0;
-	unsigned int c = smp_processor_id();
 
 #define PR_CACHE(p, enb, str)						\
 {									\