sparc32: fix sparcstation 5 boot
The sparcstation 5 I have available has no MID property for the CPU.
This resulted in a panic when booting a SMP kernel on this box.
The assigned field in cpu_data is never used, so if we fail
to read the MID property then inform user and continue booting.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/smp_32.c b/arch/sparc/kernel/smp_32.c
index 91c10fb..850a136 100644
--- a/arch/sparc/kernel/smp_32.c
+++ b/arch/sparc/kernel/smp_32.c
@@ -53,6 +53,7 @@
void __cpuinit smp_store_cpu_info(int id)
{
int cpu_node;
+ int mid;
cpu_data(id).udelay_val = loops_per_jiffy;
@@ -60,10 +61,13 @@
cpu_data(id).clock_tick = prom_getintdefault(cpu_node,
"clock-frequency", 0);
cpu_data(id).prom_node = cpu_node;
- cpu_data(id).mid = cpu_get_hwmid(cpu_node);
+ mid = cpu_get_hwmid(cpu_node);
- if (cpu_data(id).mid < 0)
- panic("No MID found for CPU%d at node 0x%08d", id, cpu_node);
+ if (mid < 0) {
+ printk(KERN_NOTICE "No MID found for CPU%d at node 0x%08d", id, cpu_node);
+ mid = 0;
+ }
+ cpu_data(id).mid = mid;
}
void __init smp_cpus_done(unsigned int max_cpus)