4.4-stable review patch. If anyone has any objections, please let me know.
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From: Moritz Fischer mdf@kernel.org
[ Upstream commit 538c08f4c89580fc644e2bc64e0a4b86c925da4e ]
The WDIOC_SETOPTIONS case in the watchdog ioctl would alwayss falls through to the -EINVAL case. This is wrong since thew watchdog does actually get stopped or started correctly.
Fixes: 920f91e50c5b ("drivers/rtc/rtc-ds1374.c: add watchdog support") Signed-off-by: Moritz Fischer mdf@kernel.org Signed-off-by: Alexandre Belloni alexandre.belloni@free-electrons.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/rtc/rtc-ds1374.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/rtc/rtc-ds1374.c +++ b/drivers/rtc/rtc-ds1374.c @@ -548,14 +548,15 @@ static long ds1374_wdt_ioctl(struct file if (options & WDIOS_DISABLECARD) { pr_info("disable watchdog\n"); ds1374_wdt_disable(); + return 0; }
if (options & WDIOS_ENABLECARD) { pr_info("enable watchdog\n"); ds1374_wdt_settimeout(wdt_margin); ds1374_wdt_ping(); + return 0; } - return -EINVAL; } return -ENOTTY;