[PATCH 2/2] iommu/tegra: gart: Reserve iomem resource
From: Hiroshi DOYU <hidden>
Date: 2012-05-14 18:12:27
Also in:
lkml
Subsystem:
iommu subsystem, tegra iommu drivers, the rest · Maintainers:
Joerg Roedel, Will Deacon, Thierry Reding, Linus Torvalds
GART Register/Aperture range should be reserved. Signed-off-by: Hiroshi DOYU <redacted> --- 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