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authorPhilippe Gerum <rpm@xenomai.org>2009-06-22 18:26:22 +0200
committerMike Frysinger <vapier@gentoo.org>2009-09-16 21:28:42 -0400
commitf4e129399c9ead8ec37910ce9793813698c2df51 (patch)
treedf38720ee6bf3e2561d48754222ead051ecf7570 /arch/blackfin
parent9ea7770fdb0d6742d6a0aba62facda4b35356cf2 (diff)
downloadblackbird-op-linux-f4e129399c9ead8ec37910ce9793813698c2df51.tar.gz
blackbird-op-linux-f4e129399c9ead8ec37910ce9793813698c2df51.zip
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>
Diffstat (limited to 'arch/blackfin')
-rw-r--r--arch/blackfin/kernel/ipipe.c5
-rw-r--r--arch/blackfin/mach-common/entry.S14
2 files changed, 7 insertions, 12 deletions
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);
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