--- zzzz-none-000/linux-4.4.271/drivers/gpio/gpio-viperboard.c	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/drivers/gpio/gpio-viperboard.c	2023-04-19 10:22:28.000000000 +0000
@@ -173,7 +173,7 @@
 		mutex_unlock(&vb->lock);
 
 		if (ret != sizeof(struct vprbrd_gpioa_msg))
-			dev_err(chip->dev, "usb error setting pin value\n");
+			dev_err(chip->parent, "usb error setting pin value\n");
 	}
 }
 
@@ -345,7 +345,7 @@
 		mutex_unlock(&vb->lock);
 
 		if (ret != sizeof(struct vprbrd_gpiob_msg))
-			dev_err(chip->dev, "usb error setting pin value\n");
+			dev_err(chip->parent, "usb error setting pin value\n");
 	}
 }
 
@@ -366,7 +366,7 @@
 	mutex_unlock(&vb->lock);
 
 	if (ret)
-		dev_err(chip->dev, "usb error setting pin to input\n");
+		dev_err(chip->parent, "usb error setting pin to input\n");
 
 	return ret;
 }
@@ -385,7 +385,7 @@
 
 	ret = vprbrd_gpiob_setdir(vb, offset, 1);
 	if (ret)
-		dev_err(chip->dev, "usb error setting pin to output\n");
+		dev_err(chip->parent, "usb error setting pin to output\n");
 
 	mutex_unlock(&vb->lock);
 
@@ -409,7 +409,7 @@
 	vb_gpio->vb = vb;
 	/* registering gpio a */
 	vb_gpio->gpioa.label = "viperboard gpio a";
-	vb_gpio->gpioa.dev = &pdev->dev;
+	vb_gpio->gpioa.parent = &pdev->dev;
 	vb_gpio->gpioa.owner = THIS_MODULE;
 	vb_gpio->gpioa.base = -1;
 	vb_gpio->gpioa.ngpio = 16;
@@ -420,13 +420,13 @@
 	vb_gpio->gpioa.direction_output = vprbrd_gpioa_direction_output;
 	ret = gpiochip_add(&vb_gpio->gpioa);
 	if (ret < 0) {
-		dev_err(vb_gpio->gpioa.dev, "could not add gpio a");
+		dev_err(vb_gpio->gpioa.parent, "could not add gpio a");
 		goto err_gpioa;
 	}
 
 	/* registering gpio b */
 	vb_gpio->gpiob.label = "viperboard gpio b";
-	vb_gpio->gpiob.dev = &pdev->dev;
+	vb_gpio->gpiob.parent = &pdev->dev;
 	vb_gpio->gpiob.owner = THIS_MODULE;
 	vb_gpio->gpiob.base = -1;
 	vb_gpio->gpiob.ngpio = 16;
@@ -437,7 +437,7 @@
 	vb_gpio->gpiob.direction_output = vprbrd_gpiob_direction_output;
 	ret = gpiochip_add(&vb_gpio->gpiob);
 	if (ret < 0) {
-		dev_err(vb_gpio->gpiob.dev, "could not add gpio b");
+		dev_err(vb_gpio->gpiob.parent, "could not add gpio b");
 		goto err_gpiob;
 	}