soc: ti: smartreflex: Simplify getting the opam_sr pointer

The probe function stores the sr_info pointer using
platform_set_drvdata(). Use the corresponding platform_get_drvdata() to
retrieve that pointer in the remove and shutdown functions.

This simplifies these functions and makes error handling unnecessary.
This is a good thing as at least for .remove() returning an error code
doesn't have the desired effect.

This is a preparation for making platform remove callbacks return void.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Author: Uwe Kleine-König

drivers/soc/ti/smartreflex.c

@@ -937,21 +937,8 @@ static int omap_sr_probe(struct platform_device *pdev)
 
 static int omap_sr_remove(struct platform_device *pdev)
 {
-	struct omap_sr_data *pdata = pdev->dev.platform_data;
 	struct device *dev = &pdev->dev;
-	struct omap_sr *sr_info;
-
-	if (!pdata) {
-		dev_err(&pdev->dev, "%s: platform data missing\n", __func__);
-		return -EINVAL;
-	}
-
-	sr_info = _sr_lookup(pdata->voltdm);
-	if (IS_ERR(sr_info)) {
-		dev_warn(&pdev->dev, "%s: omap_sr struct not found\n",
-			__func__);
-		return PTR_ERR(sr_info);
-	}
+	struct omap_sr *sr_info = platform_get_drvdata(pdev);
 
 	if (sr_info->autocomp_active)
 		sr_stop_vddautocomp(sr_info);
@@ -965,20 +952,7 @@ static int omap_sr_remove(struct platform_device *pdev)
 
 static void omap_sr_shutdown(struct platform_device *pdev)
 {
-	struct omap_sr_data *pdata = pdev->dev.platform_data;
-	struct omap_sr *sr_info;
-
-	if (!pdata) {
-		dev_err(&pdev->dev, "%s: platform data missing\n", __func__);
-		return;
-	}
-
-	sr_info = _sr_lookup(pdata->voltdm);
-	if (IS_ERR(sr_info)) {
-		dev_warn(&pdev->dev, "%s: omap_sr struct not found\n",
-			__func__);
-		return;
-	}
+	struct omap_sr *sr_info = platform_get_drvdata(pdev);
 
 	if (sr_info->autocomp_active)
 		sr_stop_vddautocomp(sr_info);