Commit a7d82a0a authored by Daniel Hellstrom's avatar Daniel Hellstrom Committed by David S. Miller

sparc32, sun4m: bugfix in SMP IPI traphandler

Three new IPIs were introduced by commit
ecbc42b7 ("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: default avatarDaniel Hellstrom <daniel@gaisler.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6cb79b3f
...@@ -229,7 +229,7 @@ real_irq_entry: ...@@ -229,7 +229,7 @@ real_irq_entry:
#ifdef CONFIG_SMP #ifdef CONFIG_SMP
.globl patchme_maybe_smp_msg .globl patchme_maybe_smp_msg
cmp %l7, 12 cmp %l7, 11
patchme_maybe_smp_msg: patchme_maybe_smp_msg:
bgu maybe_smp4m_msg bgu maybe_smp4m_msg
nop nop
...@@ -293,7 +293,7 @@ maybe_smp4m_msg: ...@@ -293,7 +293,7 @@ maybe_smp4m_msg:
WRITE_PAUSE WRITE_PAUSE
wr %l4, PSR_ET, %psr wr %l4, PSR_ET, %psr
WRITE_PAUSE 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: maybe_smp4m_msg_check_single:
andcc %o2, 0x1, %g0 andcc %o2, 0x1, %g0
beq,a maybe_smp4m_msg_check_mask beq,a maybe_smp4m_msg_check_mask
......
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