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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2025-08-20 20:42:41 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2025-08-20 20:42:41 +0300
commit5c40cd7db64a2949f268d7467b9be551a565d14b (patch)
treefb8a67f6edcb0c9922c256a598d675c1c04051d6 /drivers/watchdog/apple_wdt.c
parent8bde384a2090759efc9b92f34300887d418a2a3a (diff)
parent25bf10be219d37d2fb221c93816a913f5f735530 (diff)
downloadlinux-rolling-stable.tar.xz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/watchdog/apple_wdt.c')
-rw-r--r--drivers/watchdog/apple_wdt.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/watchdog/apple_wdt.c b/drivers/watchdog/apple_wdt.c
index 95d9e37df41c..66a158f67a71 100644
--- a/drivers/watchdog/apple_wdt.c
+++ b/drivers/watchdog/apple_wdt.c
@@ -95,9 +95,12 @@ static int apple_wdt_ping(struct watchdog_device *wdd)
static int apple_wdt_set_timeout(struct watchdog_device *wdd, unsigned int s)
{
struct apple_wdt *wdt = to_apple_wdt(wdd);
+ u32 actual;
writel_relaxed(0, wdt->regs + APPLE_WDT_WD1_CUR_TIME);
- writel_relaxed(wdt->clk_rate * s, wdt->regs + APPLE_WDT_WD1_BITE_TIME);
+
+ actual = min(s, wdd->max_hw_heartbeat_ms / 1000);
+ writel_relaxed(wdt->clk_rate * actual, wdt->regs + APPLE_WDT_WD1_BITE_TIME);
wdd->timeout = s;
@@ -177,7 +180,7 @@ static int apple_wdt_probe(struct platform_device *pdev)
wdt->wdd.ops = &apple_wdt_ops;
wdt->wdd.info = &apple_wdt_info;
- wdt->wdd.max_timeout = U32_MAX / wdt->clk_rate;
+ wdt->wdd.max_hw_heartbeat_ms = U32_MAX / wdt->clk_rate * 1000;
wdt->wdd.timeout = APPLE_WDT_TIMEOUT_DEFAULT;
wdt_ctrl = readl_relaxed(wdt->regs + APPLE_WDT_WD1_CTRL);