watchdog: apple: Actually flush writes after requesting watchdog restart

Although there is an existing code comment about flushing the writes,
writes were not actually being flushed.

Actually flush the writes by changing readl_relaxed() to readl().

Fixes: 4ed224aeaf661 ("watchdog: Add Apple SoC watchdog driver")
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Nick Chan <towinchenmi@gmail.com>
Reviewed-by: Guenter Roeck  <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20241001170018.20139-2-towinchenmi@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

diff --git a/drivers/watchdog/apple_wdt.c b/drivers/watchdog/apple_wdt.c
index d4f739932f0be8394c827e9beed3c1bbc4aace0d..62dabf223d90960b06fec3e28030b7d3779052ac 100644 (file)
--- a/drivers/watchdog/apple_wdt.c
+++ b/drivers/watchdog/apple_wdt.c
@@ -130,7 +130,7 @@ static int apple_wdt_restart(struct watchdog_device *wdd, unsigned long mode,
         * can take up to ~20-25ms until the SoC is actually reset. Just wait
         * 50ms here to be safe.
         */
-       (void)readl_relaxed(wdt->regs + APPLE_WDT_WD1_CUR_TIME);
+       (void)readl(wdt->regs + APPLE_WDT_WD1_CUR_TIME);
        mdelay(50);
 
        return 0;