diff options
| author | Wolfram Sang <wsa+renesas@sang-engineering.com> | 2018-12-04 15:01:46 +0300 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@linux-watchdog.org> | 2018-12-22 14:15:32 +0300 |
| commit | 9077123c68074619177c9a8d3adce2527bd94179 (patch) | |
| tree | 1d393b993e64ae9d2c41a23aa8c97607ae829633 /drivers/watchdog/renesas_wdt.c | |
| parent | 248e655b45ed2ce98aee9de439616fdd2b78b0f5 (diff) | |
| download | linux-9077123c68074619177c9a8d3adce2527bd94179.tar.xz | |
watchdog: renesas_wdt: don't keep timer value during suspend/resume
After discussing this mail thread [1] again, we concluded that giving
userspace enough time to prepare is our favourite option. So, do not
keep the time value when suspended but reset it when resuming.
[1] https://patchwork.kernel.org/patch/10252209/
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Diffstat (limited to 'drivers/watchdog/renesas_wdt.c')
| -rw-r--r-- | drivers/watchdog/renesas_wdt.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/watchdog/renesas_wdt.c b/drivers/watchdog/renesas_wdt.c index c450e23e24a8..622ede529912 100644 --- a/drivers/watchdog/renesas_wdt.c +++ b/drivers/watchdog/renesas_wdt.c @@ -48,7 +48,6 @@ struct rwdt_priv { void __iomem *base; struct watchdog_device wdev; unsigned long clk_rate; - u16 time_left; u8 cks; }; @@ -268,10 +267,9 @@ static int __maybe_unused rwdt_suspend(struct device *dev) { struct rwdt_priv *priv = dev_get_drvdata(dev); - if (watchdog_active(&priv->wdev)) { - priv->time_left = readw(priv->base + RWTCNT); + if (watchdog_active(&priv->wdev)) rwdt_stop(&priv->wdev); - } + return 0; } @@ -279,10 +277,9 @@ static int __maybe_unused rwdt_resume(struct device *dev) { struct rwdt_priv *priv = dev_get_drvdata(dev); - if (watchdog_active(&priv->wdev)) { + if (watchdog_active(&priv->wdev)) rwdt_start(&priv->wdev); - rwdt_write(priv, priv->time_left, RWTCNT); - } + return 0; } |