dmaengine: ste_dma40: Pass dev to OF function

The OF platform data population function only wants to
use struct device *dev, so pass that instead.

This change makes the compiler realize that the local
platform data variable is unused, so drop that too.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230417-ux500-dma40-cleanup-v3-5-60bfa6785968@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>

Author: Linus Walleij

drivers/dma/ste_dma40.c

@@ -3480,14 +3480,14 @@ static int __init d40_lcla_allocate(struct d40_base *base)
 	return ret;
 }
 
-static int __init d40_of_probe(struct platform_device *pdev,
+static int __init d40_of_probe(struct device *dev,
 			       struct device_node *np)
 {
 	struct stedma40_platform_data *pdata;
 	int num_phy = 0, num_memcpy = 0, num_disabled = 0;
 	const __be32 *list;
 
-	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
 	if (!pdata)
 		return -ENOMEM;
 
@@ -3500,7 +3500,7 @@ static int __init d40_of_probe(struct platform_device *pdev,
 	num_memcpy /= sizeof(*list);
 
 	if (num_memcpy > D40_MEMCPY_MAX_CHANS || num_memcpy <= 0) {
-		d40_err(&pdev->dev,
+		d40_err(dev,
 			"Invalid number of memcpy channels specified (%d)\n",
 			num_memcpy);
 		return -EINVAL;
@@ -3515,7 +3515,7 @@ static int __init d40_of_probe(struct platform_device *pdev,
 	num_disabled /= sizeof(*list);
 
 	if (num_disabled >= STEDMA40_MAX_PHYS || num_disabled < 0) {
-		d40_err(&pdev->dev,
+		d40_err(dev,
 			"Invalid number of disabled channels specified (%d)\n",
 			num_disabled);
 		return -EINVAL;
@@ -3526,15 +3526,14 @@ static int __init d40_of_probe(struct platform_device *pdev,
 				   num_disabled);
 	pdata->disabled_channels[num_disabled] = -1;
 
-	pdev->dev.platform_data = pdata;
+	dev->platform_data = pdata;
 
 	return 0;
 }
 
 static int __init d40_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct stedma40_platform_data *plat_data = dev_get_platdata(dev);
 	struct device_node *np = pdev->dev.of_node;
 	struct device_node *np_lcpa;
 	int ret = -ENOENT;
@@ -3544,7 +3543,7 @@ static int __init d40_probe(struct platform_device *pdev)
 	int num_reserved_chans;
 	u32 val;
 
-	if (d40_of_probe(pdev, np)) {
+	if (d40_of_probe(dev, np)) {
 		ret = -ENOMEM;
 		goto report_failure;
 	}