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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/drivers/fpga/altera-pr-ip-core.c
..
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@@ -108,7 +108,7 @@
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 	u32 *buffer_32 = (u32 *)buf;
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 	size_t i = 0;
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-	if (count <= 0)
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+	if (!count)
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 		return -EINVAL;
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 	/* Write out the complete 32-bit chunks */
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@@ -177,7 +177,6 @@
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 {
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 	struct alt_pr_priv *priv;
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 	struct fpga_manager *mgr;
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-	int ret;
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 	u32 val;
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181
 
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 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
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@@ -192,29 +191,23 @@
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 		(val & ALT_PR_CSR_STATUS_MSK) >> ALT_PR_CSR_STATUS_SFT,
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 		(int)(val & ALT_PR_CSR_PR_START));
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-	mgr = fpga_mgr_create(dev, dev_name(dev), &alt_pr_ops, priv);
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+	mgr = devm_fpga_mgr_create(dev, dev_name(dev), &alt_pr_ops, priv);
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 	if (!mgr)
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 		return -ENOMEM;
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 	dev_set_drvdata(dev, mgr);
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-	ret = fpga_mgr_register(mgr);
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-	if (ret)
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-		fpga_mgr_free(mgr);
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-
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-	return ret;
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+	return fpga_mgr_register(mgr);
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 }
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 EXPORT_SYMBOL_GPL(alt_pr_register);
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-int alt_pr_unregister(struct device *dev)
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+void alt_pr_unregister(struct device *dev)
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 {
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 	struct fpga_manager *mgr = dev_get_drvdata(dev);
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 	dev_dbg(dev, "%s\n", __func__);
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209
 
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 	fpga_mgr_unregister(mgr);
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-
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-	return 0;
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 }
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 EXPORT_SYMBOL_GPL(alt_pr_unregister);
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