Commit 7358650e authored May 19, 2010 by Michael Ellerman Committed by Benjamin Herrenschmidt May 21, 2010

powerpc/rtasd: Don't start event scan if scan rate is zero



There appear to be Pegasos systems which have the rtas-event-scan
RTAS tokens, but on which the event scan always fails. They also
have an event-scan-rate property containing 0, which means call
event scan 0 times per minute.

So interpret a scan rate of 0 to mean don't scan at all. This fixes
the problem on the Pegasos machines and makes sense as well.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

parent 78f62237

arch/powerpc/kernel/rtasd.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -490,6 +490,12 @@ static int __init rtas_init(void)
		return -ENODEV;
		}

		if (!rtas_event_scan_rate) {
		/* Broken firmware: take a rate of zero to mean don't scan */
		printk(KERN_DEBUG "rtasd: scan rate is 0, not scanning\n");
		return 0;
		}

		/* Make room for the sequence number */
		rtas_error_log_max = rtas_get_error_log_max();
		rtas_error_log_buffer_max = rtas_error_log_max + sizeof(int);