spi: sprd: switch the sequence of setting WDG_LOAD_LOW and _HIGH

commit 8bdd79dae1ff5397351b95e249abcae126572617 upstream.

The watchdog counter consists of WDG_LOAD_LOW and WDG_LOAD_HIGH,
which would be loaded to watchdog counter once writing WDG_LOAD_LOW.

Fixes: ac1775012058 ("spi: sprd: Add the support of restarting the system")
Signed-off-by: Lingling Xu <ling_ling.xu@unisoc.com>
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Link: https://lore.kernel.org/r/20200602082415.5848-1-zhang.lyra@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/spi/spi-sprd-adi.c b/drivers/spi/spi-sprd-adi.c
index f1fc2bde6ef307cd494d4babb3101d90b3fe959a..e41976010dc48e318438dda60ac984ef83fff08a 100644 (file)
--- a/drivers/spi/spi-sprd-adi.c
+++ b/drivers/spi/spi-sprd-adi.c
@@ -358,9 +358,9 @@ static int sprd_adi_restart_handler(struct notifier_block *this,
        sprd_adi_write(sadi, sadi->slave_pbase + REG_WDG_LOCK, WDG_UNLOCK_KEY);
 
        /* Load the watchdog timeout value, 50ms is always enough. */
+       sprd_adi_write(sadi, sadi->slave_pbase + REG_WDG_LOAD_HIGH, 0);
        sprd_adi_write(sadi, sadi->slave_pbase + REG_WDG_LOAD_LOW,
                       WDG_LOAD_VAL & WDG_LOAD_MASK);
-       sprd_adi_write(sadi, sadi->slave_pbase + REG_WDG_LOAD_HIGH, 0);
 
        /* Start the watchdog to reset system */
        sprd_adi_read(sadi, sadi->slave_pbase + REG_WDG_CTRL, &val);