gpio/omap: fix missing check in *_runtime_suspend()

We do checking for bank->enabled_non_wakeup_gpios in order
to skip redundant operations. Somehow, the check got missed
while doing the cleanup series.

Just to make sure that we do context restore correctly in
*_runtime_resume(), the bank->workaround_enabled check is
moved after context restore. Otherwise, it would prevent
context restore when bank->enabled_non_wakeup_gpios is 0.

Cc: Kevin Hilman <khilman@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Cousson, Benoit <b-cousson@ti.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Govindraj.R <govindraj.raja@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>

drivers/gpio/gpio-omap.c

@@ -1157,6 +1157,9 @@ static int omap_gpio_runtime_suspend(struct device *dev)
 
 	spin_lock_irqsave(&bank->lock, flags);
 
+	if (!bank->enabled_non_wakeup_gpios)
+		goto update_gpio_context_count;
+
 	/*
 	 * Only edges can generate a wakeup event to the PRCM.
 	 *
@@ -1232,11 +1235,6 @@ static int omap_gpio_runtime_resume(struct device *dev)
 	__raw_writel(bank->context.risingdetect,
 		     bank->base + bank->regs->risingdetect);
 
-	if (!bank->workaround_enabled) {
-		spin_unlock_irqrestore(&bank->lock, flags);
-		return 0;
-	}
-
 	if (bank->get_context_loss_count) {
 		context_lost_cnt_after =
 			bank->get_context_loss_count(bank->dev);
@@ -1249,6 +1247,11 @@ static int omap_gpio_runtime_resume(struct device *dev)
 		}
 	}
 
+	if (!bank->workaround_enabled) {
+		spin_unlock_irqrestore(&bank->lock, flags);
+		return 0;
+	}
+
 	__raw_writel(bank->context.fallingdetect,
 			bank->base + bank->regs->fallingdetect);
 	__raw_writel(bank->context.risingdetect,