From: Philippe Gerum <rpm@xenomai.org>
Date: Mon, 22 Jun 2009 16:26:22 +0000 (+0200)
Subject: Blackfin: inline I-pipe bypass code in ret_from_exception
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f4e129399c9ead8ec37910ce9793813698c2df51;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

Blackfin: inline I-pipe bypass code in ret_from_exception

Signed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---

diff --git a/arch/blackfin/kernel/ipipe.c b/arch/blackfin/kernel/ipipe.c
index be4f24ebd40c..5d7382396dc0 100644
--- a/arch/blackfin/kernel/ipipe.c
+++ b/arch/blackfin/kernel/ipipe.c
@@ -164,11 +164,6 @@ out:
 		__clear_bit(IPIPE_STALL_FLAG, &p->status);
 }
 
-int __ipipe_check_root(void)
-{
-	return ipipe_root_domain_p;
-}
-
 void __ipipe_enable_irqdesc(struct ipipe_domain *ipd, unsigned irq)
 {
 	struct irq_desc *desc = irq_to_desc(irq);
diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S
index 2c58b60ff131..cbc5b6d1ed06 100644
--- a/arch/blackfin/mach-common/entry.S
+++ b/arch/blackfin/mach-common/entry.S
@@ -840,13 +840,13 @@ ENDPROC(_resume)
 
 ENTRY(_ret_from_exception)
 #ifdef CONFIG_IPIPE
-	[--sp] = rets;
-	SP += -12;
-	call ___ipipe_check_root
-	SP += 12
-	rets = [sp++];
-	cc = r0 == 0;
-	if cc jump 4f;                /* not on behalf of Linux, get out */
+	p2.l = _per_cpu__ipipe_percpu_domain;
+	p2.h = _per_cpu__ipipe_percpu_domain;
+	r0.l = _ipipe_root;
+	r0.h = _ipipe_root;
+	r2 = [p2];
+	cc = r0 == r2;
+	if !cc jump 4f;  /* not on behalf of the root domain, get out */
 #endif /* CONFIG_IPIPE */
 	p2.l = lo(IPEND);
 	p2.h = hi(IPEND);