Commit:     e48395f1753cab0fde6c03f1db833cece9ef2ba0
Parent:     75723957673bfa10c98b735259f891cc79cf0450
Author:     Anton Blanchard <[EMAIL PROTECTED]>
AuthorDate: Mon Oct 1 07:45:55 2007 +1000
Committer:  Paul Mackerras <[EMAIL PROTECTED]>
CommitDate: Tue Oct 2 11:48:14 2007 +1000

    [POWERPC] Fix xics set_affinity code
    On a POWER6 machine running 2.6.23-rc8 I sometimes see the following error:
    xics_set_affinity: No online cpus in the mask 
00000000,00000000,00000000,00000001 for irq 20
    In a desperate attempt to get a changelog entry in 2.6.23, I took a look
    into it.
    It turns out we are passing a real and not a virtual irq into
    get_irq_server.  This works for the case where hwirq < NR_IRQS and we
    set virq = hwirq.  In my case however hwirq = 590082 and we try and
    access irq_desc[590082], slightly past the end at 512 entries.
    Lucky we ship lots of memory with our machines.
    Signed-off-by: Anton Blanchard <[EMAIL PROTECTED]>
    Signed-off-by: Paul Mackerras <[EMAIL PROTECTED]>
 arch/powerpc/platforms/pseries/xics.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/powerpc/platforms/pseries/xics.c 
index 5bd90a7..f0b5ff1 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -419,7 +419,7 @@ static void xics_set_affinity(unsigned int virq, cpumask_t 
         * For the moment only implement delivery to all cpus or one cpu.
         * Get current irq_server for the given irq
-       irq_server = get_irq_server(irq, 1);
+       irq_server = get_irq_server(virq, 1);
        if (irq_server == -1) {
                char cpulist[128];
                cpumask_scnprintf(cpulist, sizeof(cpulist), cpumask);
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