On Sat, Mar 11, 2017 at 07:25:21PM +0200, Krzysztof Kozlowski wrote: > In soft (no-reboot) mode, the driver self-pings watchdog upon expiration > of an interrupt. However the interrupt itself was not cleared thus on > first hit, the system enters infinite interrupt handling loop. > > On Odroid U3 (Exynos4412), when booted with s3c2410_wdt.soft_noboot=1 > argument the console is flooded: > # killall -9 watchdog > [ 60.523760] s3c2410-wdt 10060000.watchdog: watchdog timer expired (irq) > [ 60.536744] s3c2410-wdt 10060000.watchdog: watchdog timer expired (irq) > > Fix this by writing something to the WTCLRINT register to clear the > interrupt. The register WTCLRINT however appeared in S3C6410 so a new > watchdog quirk and flavor are needed. > > Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx> > Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx> > Acked-by: Rob Herring <robh@xxxxxxxxxx> > --- > .../devicetree/bindings/watchdog/samsung-wdt.txt | 9 +++++---- > drivers/watchdog/s3c2410_wdt.c | 21 ++++++++++++++++++--- > 2 files changed, 23 insertions(+), 7 deletions(-) > This can be ignored, already applied. Best regards, Krzysztof -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
