watchdog: orion: Move the register ioremap'ing to its own function

Follow-up patches will extend the registers ioremap and request
to handle SoC-specific quirks on the RSTOUT register. Therefore,
in order to keep the code readable, this commit introduces a special
function for this.

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: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

1 files changed, 24 insertions, 14 deletions

diff --git a/drivers/watchdog/orion_wdt.c b/drivers/watchdog/orion_wdt.c
index 9b3c41d18703..afa38314fb18 100644
--- a/drivers/watchdog/orion_wdt.c
+++ b/drivers/watchdog/orion_wdt.c
@@ -313,12 +313,32 @@ static const struct of_device_id orion_wdt_of_match_table[] = {
 };
 MODULE_DEVICE_TABLE(of, orion_wdt_of_match_table);
 
+static int orion_wdt_get_regs(struct platform_device *pdev,
+                              struct orion_watchdog *dev)
+{
+        struct resource *res;
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!res)
+                return -ENODEV;
+        dev->reg = devm_ioremap(&pdev->dev, res->start,
+                                resource_size(res));
+        if (!dev->reg)
+                return -ENOMEM;
+
+        dev->rstout = orion_wdt_ioremap_rstout(pdev, res->start &
+                                                     INTERNAL_REGS_MASK);
+        if (!dev->rstout)
+                return -ENODEV;
+
+        return 0;
+}
+
 static int orion_wdt_probe(struct platform_device *pdev)
 {
         struct orion_watchdog *dev;
         const struct of_device_id *match;
         unsigned int wdt_max_duration;  /* (seconds) */
-        struct resource *res;
         int ret, irq;
 
         dev = devm_kzalloc(&pdev->dev, sizeof(struct orion_watchdog),
@@ -336,19 +356,9 @@ static int orion_wdt_probe(struct platform_device *pdev)
         dev->wdt.min_timeout = 1;
         dev->data = match->data;
 
-        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-        if (!res)
-                return -ENODEV;
-
-        dev->reg = devm_ioremap(&pdev->dev, res->start,
-                               resource_size(res));
-        if (!dev->reg)
-                return -ENOMEM;
-
-        dev->rstout = orion_wdt_ioremap_rstout(pdev, res->start &
-                                                     INTERNAL_REGS_MASK);
-        if (!dev->rstout)
-                return -ENODEV;
+        ret = orion_wdt_get_regs(pdev, dev);
+        if (ret)
+                return ret;
 
         ret = dev->data->clock_init(pdev, dev);
         if (ret) {