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From: Roger Quadros <rogerq@ti.com>
To: <hdegoede@redhat.com>, <axboe@kernel.dk>
Cc: <vigneshr@ti.com>, <nsekhar@ti.com>, <linux-ide@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>, Roger Quadros <rogerq@ti.com>,
	<stable@vger.kernel.org>
Subject: [PATCH] ata: ahci_platform: add 32-bit quirk for dwc-ahci
Date: Thu, 6 Feb 2020 13:17:28 +0200
Message-ID: <20200206111728.6703-1-rogerq@ti.com> (raw)

On TI Platforms using LPAE, SATA breaks with 64-bit DMA.
Restrict it to 32-bit.

Cc: stable@vger.kernel.org
Signed-off-by: Roger Quadros <rogerq@ti.com>
---
 drivers/ata/ahci_platform.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c
index 3aab2e3d57f3..b925dc54cfa5 100644
--- a/drivers/ata/ahci_platform.c
+++ b/drivers/ata/ahci_platform.c
@@ -62,6 +62,9 @@ static int ahci_probe(struct platform_device *pdev)
 	if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci"))
 		hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ;
 
+	if (of_device_is_compatible(dev->of_node, "snps,dwc-ahci"))
+		hpriv->flags |= AHCI_HFLAG_32BIT_ONLY;
+
 	port = acpi_device_get_match_data(dev);
 	if (!port)
 		port = &ahci_port_info;
-- 
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Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki


             reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-06 11:17 Roger Quadros [this message]
2020-02-06 11:50 ` Hans de Goede
2020-02-06 11:54   ` Roger Quadros
2020-02-12 11:01   ` Roger Quadros
2020-02-12 11:32     ` Hans de Goede
2020-02-12 11:43       ` Robin Murphy
2020-02-12 11:56         ` David Laight
2020-02-12 12:09           ` Robin Murphy
2020-02-13  7:24         ` Roger Quadros

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