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authorRichard Kuo <rkuo@codeaurora.org>2012-10-23 18:26:01 -0500
committerRichard Kuo <rkuo@codeaurora.org>2013-04-30 19:40:26 -0500
commit3981c4728bcec97f352f8518f05a0015c7df6a3c (patch)
treed5bc669bb171dd2ef71e4d5021d026572d5ba0f0
parent1ce81f4f8727f42c052fe814f3df20bc92fdb168 (diff)
Hexagon: fix up int enable/disable at ret_from_fork
Check return coming out of check_work_pending, and if copy_thread passed us a function in r24, call it. Based on feedback from Al Viro. Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
-rw-r--r--arch/hexagon/kernel/vm_entry.S13
1 files changed, 11 insertions, 2 deletions
diff --git a/arch/hexagon/kernel/vm_entry.S b/arch/hexagon/kernel/vm_entry.S
index 9add73ab57d..34470911d4a 100644
--- a/arch/hexagon/kernel/vm_entry.S
+++ b/arch/hexagon/kernel/vm_entry.S
@@ -374,11 +374,20 @@ _K_enter_debug:
.globl ret_from_fork
ret_from_fork:
{
- call schedule_tail;
+ call schedule_tail
R16.H = #HI(do_work_pending);
}
{
+ P0 = cmp.eq(R24, #0);
R16.L = #LO(do_work_pending);
R0 = #VM_INT_DISABLE;
- jump check_work_pending;
+ }
+ if P0 jump check_work_pending
+ {
+ R0 = R25;
+ callr R24
+ }
+ {
+ jump check_work_pending
+ R0 = #VM_INT_DISABLE;
}