Commit 3978bdb4 authored Mar 05, 2013 by Tudor Laurentiu Committed by Scott Wood Jun 25, 2013

powerpc/watchdog: Don't enable interrupt on PPC64 BookE



Critical interrupts are not handled on PPC64 BookE machines,
so when the first watchdog interrupt fires the machine will
freeze without a warning until it's rebooted by the second
watchdog trigger.
Plus, the interrupt isn't used anyway since the driver
expects a usermode app to ping the watchdog periodically.

Signed-off-by: Laurentiu Tudor <Laurentiu.Tudor@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>

parent a16d8aa4

drivers/watchdog/booke_wdt.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -138,6 +138,14 @@ static void __booke_wdt_enable(void *data)
		val &= ~WDTP_MASK;
		val \|= (TCR_WIE\|TCR_WRC(WRC_CHIP)\|WDTP(booke_wdt_period));

		#ifdef CONFIG_PPC_BOOK3E_64
		/*
		* Crit ints are currently broken on PPC64 Book-E, so
		* just disable them for now.
		*/
		val &= ~TCR_WIE;
		#endif

		mtspr(SPRN_TCR, val);
		}