[PARISC] Prevent processor_probe() from clobbering cpu_data[0]

processor_probe() shouldn't clobber cpu_data[0]
cpu_data[0].it_value (used by timer_interrupt()) is already set.

Signed-off-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

arch/parisc/kernel/processor.c

@@ -143,8 +143,9 @@ static int __init processor_probe(struct parisc_device *dev)
 	p = &cpu_data[cpuid];
 	boot_cpu_data.cpu_count++;
 
-	/* initialize counters */
-	memset(p, 0, sizeof(struct cpuinfo_parisc));
+	/* initialize counters - CPU 0 gets it_value set in time_init() */
+	if (cpuid)
+		memset(p, 0, sizeof(struct cpuinfo_parisc));
 
 	p->loops_per_jiffy = loops_per_jiffy;
 	p->dev = dev;		/* Save IODC data in case we need it */