From: George Cherian george.cherian@marvell.com
[ Upstream commit 000987a38b53c172f435142a4026dd71378ca464 ]
Make sure to honour the max_hw_heartbeat_ms while programming the timeout value to WOR. Clamp the timeout passed to sbsa_gwdt_set_timeout() to make sure the programmed value is within the permissible range.
Fixes: abd3ac7902fb ("watchdog: sbsa: Support architecture version 1")
Signed-off-by: George Cherian george.cherian@marvell.com Reviewed-by: Guenter Roeck linux@roeck-us.net Link: https://lore.kernel.org/r/20230209021117.1512097-1-george.cherian@marvell.co... Signed-off-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Wim Van Sebroeck wim@linux-watchdog.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/watchdog/sbsa_gwdt.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/watchdog/sbsa_gwdt.c b/drivers/watchdog/sbsa_gwdt.c index 9791c74aebd48..63862803421f1 100644 --- a/drivers/watchdog/sbsa_gwdt.c +++ b/drivers/watchdog/sbsa_gwdt.c @@ -150,6 +150,7 @@ static int sbsa_gwdt_set_timeout(struct watchdog_device *wdd, struct sbsa_gwdt *gwdt = watchdog_get_drvdata(wdd);
wdd->timeout = timeout; + timeout = clamp_t(unsigned int, timeout, 1, wdd->max_hw_heartbeat_ms / 1000);
if (action) sbsa_gwdt_reg_write(gwdt->clk * timeout, gwdt);