add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/ata/pata_macio.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Libata based driver for Apple "macio" family of PATA controllers
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  *
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@@ -483,6 +484,8 @@
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 		struct device_node *root = of_find_node_by_path("/");
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 		const char *model = of_get_property(root, "model", NULL);
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+		of_node_put(root);
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+
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 		if (cable && !strncmp(cable, "80-", 3)) {
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 			/* Some drives fail to detect 80c cable in PowerBook
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 			 * These machine use proprietary short IDE cable
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@@ -915,6 +918,10 @@
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 	.sg_tablesize		= MAX_DCMDS,
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 	/* We may not need that strict one */
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 	.dma_boundary		= ATA_DMA_BOUNDARY,
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+	/* Not sure what the real max is but we know it's less than 64K, let's
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+	 * use 64K minus 256
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+	 */
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+	.max_segment_size	= MAX_DBDMA_SEG,
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 	.slave_configure	= pata_macio_slave_config,
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 };
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@@ -950,7 +957,7 @@
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 		priv->kind = controller_k2_ata6;
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 	        priv->timings = pata_macio_kauai_timings;
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 	} else if (of_device_is_compatible(priv->node, "keylargo-ata")) {
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-		if (strcmp(priv->node->name, "ata-4") == 0) {
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+		if (of_node_name_eq(priv->node, "ata-4")) {
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 			priv->kind = controller_kl_ata4;
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 			priv->timings = pata_macio_kl66_timings;
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 		} else {
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@@ -972,7 +979,7 @@
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 	priv->aapl_bus_id =  bidp ? *bidp : 0;
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 	/* Fixup missing Apple bus ID in case of media-bay */
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-	if (priv->mediabay && bidp == 0)
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+	if (priv->mediabay && !bidp)
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 		priv->aapl_bus_id = 1;
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 }
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@@ -1043,11 +1050,6 @@
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 	/* Make sure we have sane initial timings in the cache */
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 	pata_macio_default_timings(priv);
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-
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-	/* Not sure what the real max is but we know it's less than 64K, let's
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-	 * use 64K minus 256
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-	 */
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-	dma_set_max_seg_size(priv->dev, MAX_DBDMA_SEG);
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 	/* Allocate libata host for 1 port */
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 	memset(&pinfo, 0, sizeof(struct ata_port_info));