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sparc: sun4m SMP: fix wrong shift instruction in IPI handler 

This shift instruction appears to be shifting in the wrong direction.
Without this change, my SparcStation-20MP hangs just after bringing up
the second CPU:

Entering SMP Mode...
Starting CPU 2 at f02b4e90
Brought up 2 CPUs
Total of 2 processors activated (99.52 BogoMIPS).
   *** stuck ***

Signed-off-by: Will Simoneau <simoneau@ele.uri.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Will Simoneau 2011-07-16 10:45:12 -07:00 committed by David S. Miller
parent 6d999da4d2
commit 1ef48593bd
1 changed files with 1 additions and 1 deletions
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2
arch/sparc/kernel/entry.S
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@ -293,7 +293,7 @@ maybe_smp4m_msg:
WRITE_PAUSE
wr %l4, PSR_ET, %psr
WRITE_PAUSE
sll %o3, 28, %o2 ! shift for simpler checks below
srl %o3, 28, %o2 ! shift for simpler checks below
maybe_smp4m_msg_check_single:
andcc %o2, 0x1, %g0
beq,a maybe_smp4m_msg_check_mask