power/reset: xgene: Use mdelay instead of jiffies based timeout

jiffies are not running at this stage of system shutdown, meaning an
error in the reset function would never be reported. Replace with mdelay().

Cc: Loc Ho <lho@apm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/power/reset/xgene-reboot.c b/drivers/power/reset/xgene-reboot.c
index 94f10ad4100cd10bd5f1efeae7d066613f32c1e7..9da341d11caf3c1d22f79edd3acf56d44ccc7838 100644 (file)
--- a/drivers/power/reset/xgene-reboot.c
+++ b/drivers/power/reset/xgene-reboot.c
@@ -24,6 +24,7 @@
  * For system shutdown, this is board specify. If a board designer
  * implements GPIO shutdown, use the gpio-poweroff.c driver.
  */
+#include <linux/delay.h>
 #include <linux/io.h>
 #include <linux/of_device.h>
 #include <linux/of_address.h>
@@ -43,15 +44,12 @@ static struct xgene_reboot_context *xgene_restart_ctx;
 static void xgene_restart(enum reboot_mode mode, const char *cmd)
 {
        struct xgene_reboot_context *ctx = xgene_restart_ctx;
-       unsigned long timeout;
 
        /* Issue the reboot */
        if (ctx)
                writel(ctx->mask, ctx->csr);
 
-       timeout = jiffies + HZ;
-       while (time_before(jiffies, timeout))
-               cpu_relax();
+       mdelay(1000);
 
        dev_emerg(ctx->dev, "Unable to restart system\n");
 }