add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/drivers/ata/sata_qstor.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  *  sata_qstor.c - Pacific Digital Corporation QStor SATA
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  *
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@@ -6,25 +7,8 @@
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  *  Copyright 2005 Pacific Digital Corporation.
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  *  (OSL/GPL code release authorized by Jalil Fadavi).
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  *
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- *
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- *  This program is free software; you can redistribute it and/or modify
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- *  it under the terms of the GNU General Public License as published by
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- *  the Free Software Foundation; either version 2, or (at your option)
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- *  any later version.
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- *
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- *  This program is distributed in the hope that it will be useful,
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- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
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- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- *  GNU General Public License for more details.
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- *
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- *  You should have received a copy of the GNU General Public License
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- *  along with this program; see the file COPYING.  If not, write to
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- *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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- *
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- *
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  *  libata documentation is available via 'make {ps|pdf}docs',
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  *  as Documentation/driver-api/libata.rst
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- *
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  */
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 #include <linux/kernel.h>
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@@ -495,7 +479,6 @@
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 				      GFP_KERNEL);
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 	if (!pp->pkt)
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 		return -ENOMEM;
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-	memset(pp->pkt, 0, QS_PKT_BYTES);
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 	ap->private_data = pp;
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 	qs_enter_reg_mode(ap);
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@@ -556,33 +539,13 @@
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 static int qs_set_dma_masks(struct pci_dev *pdev, void __iomem *mmio_base)
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 {
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 	u32 bus_info = readl(mmio_base + QS_HID_HPHY);
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-	int rc, have_64bit_bus = (bus_info & QS_HPHY_64BIT);
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+	int dma_bits = (bus_info & QS_HPHY_64BIT) ? 64 : 32;
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+	int rc;
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-	if (have_64bit_bus &&
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-	    !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
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-		rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
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-		if (rc) {
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-			rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
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-			if (rc) {
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-				dev_err(&pdev->dev,
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-					"64-bit DMA enable failed\n");
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-				return rc;
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-			}
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-		}
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-	} else {
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-		rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
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-		if (rc) {
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-			dev_err(&pdev->dev, "32-bit DMA enable failed\n");
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-			return rc;
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-		}
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-		rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
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-		if (rc) {
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-			dev_err(&pdev->dev,
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-				"32-bit consistent DMA enable failed\n");
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-			return rc;
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-		}
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-	}
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-	return 0;
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+	rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(dma_bits));
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+	if (rc)
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+		dev_err(&pdev->dev, "%d-bit DMA enable failed\n", dma_bits);
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+	return rc;
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 }
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 static int qs_ata_init_one(struct pci_dev *pdev,