From: Hiroshi DOYU <[email protected]> GART Register/Aperture range should be reserved.
Signed-off-by: Hiroshi DOYU <[email protected]> Cc: Thierry Reding <[email protected]> Cc: Lucas Stach <[email protected]> --- 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 _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
