linux-kernel - [PATCH 5.4 16/69] watchdog: orion: use 0 for unset heartbeat

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Date:   Mon, 18 Oct 2021 15:24:14 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Chris Packham <chris.packham@...iedtelesis.co.nz>,
        Guenter Roeck <linux@...ck-us.net>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Marek Behún <kabel@...nel.org>
Subject: [PATCH 5.4 16/69] watchdog: orion: use 0 for unset heartbeat

From: Chris Packham <chris.packham@...iedtelesis.co.nz>

commit bb914088bd8a91c382f54d469367b2e5508b5493 upstream.

If the heartbeat module param is not specified we would get an error
message

  watchdog: f1020300.watchdog: driver supplied timeout (4294967295) out of range
  watchdog: f1020300.watchdog: falling back to default timeout (171)

This is because we were initialising heartbeat to -1. By removing the
initialisation (thus letting the C run time initialise it to 0) we
silence the warning message and the default timeout is still used.

Signed-off-by: Chris Packham <chris.packham@...iedtelesis.co.nz>
Reviewed-by: Guenter Roeck <linux@...ck-us.net>
Link: https://lore.kernel.org/r/20200313031312.1485-1-chris.packham@alliedtelesis.co.nz
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@...ux-watchdog.org>
Signed-off-by: Marek Behún <kabel@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/watchdog/orion_wdt.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/watchdog/orion_wdt.c
+++ b/drivers/watchdog/orion_wdt.c
@@ -52,7 +52,7 @@
 #define WDT_A370_RATIO		(1 << WDT_A370_RATIO_SHIFT)
 
 static bool nowayout = WATCHDOG_NOWAYOUT;
-static int heartbeat = -1;		/* module parameter (seconds) */
+static int heartbeat;		/* module parameter (seconds) */
 
 struct orion_watchdog;