From 000987a38b53c172f435142a4026dd71378ca464 Mon Sep 17 00:00:00 2001
From: George Cherian <george.cherian@marvell.com>
Date: Thu, 9 Feb 2023 02:11:17 +0000
Subject: [PATCH] watchdog: sbsa_wdog: Make sure the timeout programming is within the limits
Git-commit: 000987a38b53c172f435142a4026dd71378ca464
Patch-mainline: v6.3-rc1
References: git-fixes
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.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
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 9791c74aebd4..63862803421f 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);
--
2.35.3