diff options
| author | Mathieu Othacehe <othacehe@gnu.org> | 2023-08-19 10:47:26 +0200 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@linux-watchdog.org> | 2023-08-19 17:36:20 +0200 |
| commit | 266da53c35fce128ce47d8aa93e316e0a94f2f60 (patch) | |
| tree | c3a4aebc300a97dcb98015e9be6627a008c84d29 /drivers/watchdog | |
| parent | cf38e7691c85f1b09973b22a0b89bf1e1228d2f9 (diff) | |
watchdog: sama5d4: readout initial state
Readout the AT91_WDT_MR bit at probe so that it becomes possible to get the
pre-userspace handler working.
Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20230819084726.11037-1-othacehe@gnu.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/sama5d4_wdt.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/watchdog/sama5d4_wdt.c b/drivers/watchdog/sama5d4_wdt.c index 71e8b5fbf51f..13e72918338a 100644 --- a/drivers/watchdog/sama5d4_wdt.c +++ b/drivers/watchdog/sama5d4_wdt.c @@ -254,6 +254,7 @@ static int sama5d4_wdt_probe(struct platform_device *pdev) struct sama5d4_wdt *wdt; void __iomem *regs; u32 irq = 0; + u32 reg; int ret; wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL); @@ -304,6 +305,12 @@ static int sama5d4_wdt_probe(struct platform_device *pdev) watchdog_init_timeout(wdd, wdt_timeout, dev); + reg = wdt_read(wdt, AT91_WDT_MR); + if (!(reg & AT91_WDT_WDDIS)) { + wdt->mr &= ~AT91_WDT_WDDIS; + set_bit(WDOG_HW_RUNNING, &wdd->status); + } + ret = sama5d4_wdt_init(wdt); if (ret) return ret; |