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| author | Ezequiel Garcia <ezequiel.garcia@free-electrons.com> | 2014-03-15 15:17:58 -0300 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2014-06-10 21:44:20 +0200 |
| commit | eba985e20c70d99a278c04ff5c492d90d53a20dd (patch) | |
| tree | d02ad515840e6256f187bd8a75a3d409ffb86ca1 /drivers/watchdog/orion_wdt.c | |
| parent | 92d4fc1a1f56a12fa09c92d8c89873509a8012c9 (diff) | |
| download | linux-eba985e20c70d99a278c04ff5c492d90d53a20dd.tar.bz2 | |
watchdog: orion: Remove unneeded atomic access
The RSTOUT register on the Armada 370 SoC variant is a dedicated register
(not shared across orthogonal subsystems) and so it's not needed to write
it atomically.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Tested-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog/orion_wdt.c')
| -rw-r--r-- | drivers/watchdog/orion_wdt.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/watchdog/orion_wdt.c b/drivers/watchdog/orion_wdt.c index 75f623f5e6c3..365d6cc53074 100644 --- a/drivers/watchdog/orion_wdt.c +++ b/drivers/watchdog/orion_wdt.c @@ -145,6 +145,7 @@ static int orion_wdt_ping(struct watchdog_device *wdt_dev) static int armada370_start(struct watchdog_device *wdt_dev) { struct orion_watchdog *dev = watchdog_get_drvdata(wdt_dev); + u32 reg; /* Set watchdog duration */ writel(dev->clk_rate * wdt_dev->timeout, @@ -157,8 +158,10 @@ static int armada370_start(struct watchdog_device *wdt_dev) atomic_io_modify(dev->reg + TIMER_CTRL, dev->data->wdt_enable_bit, dev->data->wdt_enable_bit); - atomic_io_modify(dev->rstout, dev->data->rstout_enable_bit, - dev->data->rstout_enable_bit); + /* Enable reset on watchdog */ + reg = readl(dev->rstout); + reg |= dev->data->rstout_enable_bit; + writel(reg, dev->rstout); return 0; } |