lkml.org 
[lkml]   [2021]   [Dec]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] watchdog: msc313e: Check if the WDT was running at boot
Date
Check if the WDT was running at boot and set the running
flag if it was. This prevents the system from getting
rebooted if the userland daemon doesn't take over soon enough
or there isn't a userland daemon at all.

Signed-off-by: Daniel Palmer <daniel@0x0f.com>
---
drivers/watchdog/msc313e_wdt.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/watchdog/msc313e_wdt.c b/drivers/watchdog/msc313e_wdt.c
index 0d497aa0fb7d..90171431fc59 100644
--- a/drivers/watchdog/msc313e_wdt.c
+++ b/drivers/watchdog/msc313e_wdt.c
@@ -120,6 +120,10 @@ static int msc313e_wdt_probe(struct platform_device *pdev)
priv->wdev.max_timeout = U32_MAX / clk_get_rate(priv->clk);
priv->wdev.timeout = MSC313E_WDT_DEFAULT_TIMEOUT;

+ /* If the period is non-zero the WDT is running */
+ if (readw(priv->base + REG_WDT_MAX_PRD_L) | (readw(priv->base + REG_WDT_MAX_PRD_H) << 16))
+ set_bit(WDOG_HW_RUNNING, &priv->wdev.status);
+
watchdog_set_drvdata(&priv->wdev, priv);

watchdog_init_timeout(&priv->wdev, timeout, dev);
--
2.34.1
\
 
 \ /
  Last update: 2021-12-28 08:35    [W:0.030 / U:0.752 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site