linux-kernel - [PATCH 2/2] iommu/tegra: gart: Reserve iomem resource

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1337019127-6863-2-git-send-email-hdoyu@nvidia.com>
Date:	Mon, 14 May 2012 21:12:03 +0300
From:	Hiroshi DOYU <hdoyu@...dia.com>
To:	<hdoyu@...dia.com>
CC:	<linux-tegra@...r.kernel.org>, Joerg Roedel <joerg.roedel@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	Bharat Nihalani <bnihalani@...dia.com>,
	Vandana Salve <vsalve@...dia.com>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH 2/2] iommu/tegra: gart: Reserve iomem resource

GART Register/Aperture range should be reserved.

Signed-off-by: Hiroshi DOYU <hdoyu@...dia.com>
---
 drivers/iommu/tegra-gart.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/drivers/iommu/tegra-gart.c b/drivers/iommu/tegra-gart.c
index 33a23b6..a431006 100644
--- a/drivers/iommu/tegra-gart.c
+++ b/drivers/iommu/tegra-gart.c
@@ -366,12 +366,18 @@ static int tegra_gart_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	}
 
-	gart_regs = devm_ioremap(dev, res->start, resource_size(res));
+	gart_regs = devm_request_and_ioremap(dev, res);
 	if (!gart_regs) {
 		dev_err(dev, "failed to remap GART registers\n");
 		return -ENXIO;
 	}
 
+	if (!devm_request_mem_region(dev, res_remap->start,
+				     resource_size(res_remap), dev_name(dev))) {
+		dev_err(dev, "failed to reserve GART aperture\n");
+		return -EBUSY;
+	}
+
 	gart->dev = &pdev->dev;
 	spin_lock_init(&gart->pte_lock);
 	spin_lock_init(&gart->client_lock);
-- 
1.7.5.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/