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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/uio/uio_fsl_elbc_gpcm.c
..
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@@ -68,14 +68,20 @@
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68
 static ssize_t reg_store(struct device *dev, struct device_attribute *attr,
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 			 const char *buf, size_t count);
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-DEVICE_ATTR(reg_br, S_IRUGO|S_IWUSR|S_IWGRP, reg_show, reg_store);
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-DEVICE_ATTR(reg_or, S_IRUGO|S_IWUSR|S_IWGRP, reg_show, reg_store);
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+static DEVICE_ATTR(reg_br, 0664, reg_show, reg_store);
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+static DEVICE_ATTR(reg_or, 0664, reg_show, reg_store);
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+
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+static struct attribute *uio_fsl_elbc_gpcm_attrs[] = {
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+	&dev_attr_reg_br.attr,
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+	&dev_attr_reg_or.attr,
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+	NULL,
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+};
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+ATTRIBUTE_GROUPS(uio_fsl_elbc_gpcm);
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80
 
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 static ssize_t reg_show(struct device *dev, struct device_attribute *attr,
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 			char *buf)
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 {
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-	struct platform_device *pdev = to_platform_device(dev);
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-	struct uio_info *info = platform_get_drvdata(pdev);
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+	struct uio_info *info = dev_get_drvdata(dev);
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 	struct fsl_elbc_gpcm *priv = info->priv;
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 	struct fsl_lbc_bank *bank = &priv->lbc->bank[priv->bank];
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87
 
..
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@@ -94,8 +100,7 @@
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 static ssize_t reg_store(struct device *dev, struct device_attribute *attr,
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 			 const char *buf, size_t count)
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 {
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-	struct platform_device *pdev = to_platform_device(dev);
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-	struct uio_info *info = platform_get_drvdata(pdev);
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+	struct uio_info *info = dev_get_drvdata(dev);
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 	struct fsl_elbc_gpcm *priv = info->priv;
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 	struct fsl_lbc_bank *bank = &priv->lbc->bank[priv->bank];
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 	unsigned long val;
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@@ -382,8 +387,7 @@
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 	}
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 	/* set all UIO data */
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-	if (node->name)
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-		info->mem[0].name = kstrdup(node->name, GFP_KERNEL);
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+	info->mem[0].name = kasprintf(GFP_KERNEL, "%pOFn", node);
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 	info->mem[0].addr = res.start;
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 	info->mem[0].size = resource_size(&res);
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 	info->mem[0].memtype = UIO_MEM_PHYS;
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@@ -414,25 +418,12 @@
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 	/* store private data */
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 	platform_set_drvdata(pdev, info);
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420
 
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-	/* create sysfs files */
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-	ret = device_create_file(priv->dev, &dev_attr_reg_br);
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-	if (ret)
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-		goto out_err3;
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-	ret = device_create_file(priv->dev, &dev_attr_reg_or);
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-	if (ret)
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-		goto out_err4;
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-
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 	dev_info(priv->dev,
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 		 "eLBC/GPCM device (%s) at 0x%llx, bank %d, irq=%d\n",
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 		 priv->name, (unsigned long long)res.start, priv->bank,
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 		 irq != NO_IRQ ? irq : -1);
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425
 
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 	return 0;
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-out_err4:
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-	device_remove_file(priv->dev, &dev_attr_reg_br);
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-out_err3:
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-	platform_set_drvdata(pdev, NULL);
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-	uio_unregister_device(info);
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 out_err2:
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 	if (priv->shutdown)
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 		priv->shutdown(info, true);
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@@ -451,8 +442,6 @@
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 	struct uio_info *info = platform_get_drvdata(pdev);
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 	struct fsl_elbc_gpcm *priv = info->priv;
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444
 
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-	device_remove_file(priv->dev, &dev_attr_reg_or);
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-	device_remove_file(priv->dev, &dev_attr_reg_br);
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 	platform_set_drvdata(pdev, NULL);
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 	uio_unregister_device(info);
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 	if (priv->shutdown)
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@@ -477,6 +466,7 @@
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 	.driver = {
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 		.name = "fsl,elbc-gpcm-uio",
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 		.of_match_table = uio_fsl_elbc_gpcm_match,
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+		.dev_groups = uio_fsl_elbc_gpcm_groups,
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 	},
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 	.probe = uio_fsl_elbc_gpcm_probe,
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 	.remove = uio_fsl_elbc_gpcm_remove,