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authorDaniel Hellstrom <daniel@gaisler.com>2011-06-09 02:54:08 +0000
committerDavid S. Miller <davem@davemloft.net>2011-06-09 16:12:34 -0700
commita7d82a0a3cd547494294baee7f9764ea44bead73 (patch)
tree4d777ad78a98fbb0d432e07e2f5d1b3d61af5b8b
parent6cb79b3f3ba2b14590cac02ee13ab7410b6225ed (diff)
sparc32, sun4m: bugfix in SMP IPI traphandler
Three new IPIs were introduced by commit ecbc42b70acbc6327adefe9635db93fcf62bf59d ("sparc32, sun4m: Implemented SMP IPIs support for SUN4M machines"), the old handler was already prepared for IPIs but handled only IRQ14 and IRQ13, this patch adds support for the new IPI at IRQ12. The IPI trap handler looks at the mask rather than the pending IRQ/IPI, this bug may have masked the problem above, introduced by the same commit. Signed-off-by: Daniel Hellstrom <daniel@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--arch/sparc/kernel/entry.S4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S
index c4e61671134..9fe08a1ea6c 100644
--- a/arch/sparc/kernel/entry.S
+++ b/arch/sparc/kernel/entry.S
@@ -229,7 +229,7 @@ real_irq_entry:
#ifdef CONFIG_SMP
.globl patchme_maybe_smp_msg
- cmp %l7, 12
+ cmp %l7, 11
patchme_maybe_smp_msg:
bgu maybe_smp4m_msg
nop
@@ -293,7 +293,7 @@ maybe_smp4m_msg:
WRITE_PAUSE
wr %l4, PSR_ET, %psr
WRITE_PAUSE
- sll %o2, 28, %o2 ! shift for simpler checks below
+ sll %o3, 28, %o2 ! shift for simpler checks below
maybe_smp4m_msg_check_single:
andcc %o2, 0x1, %g0
beq,a maybe_smp4m_msg_check_mask