OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

memory: tegra: Do not try to probe SMMU on Tegra20 

Tegra20 doesn't have SMMU. Move out checking of the SMMU presence from
the SMMU driver into the Memory Controller driver. This change makes code
consistent in regards to how GART/SMMU presence checking is performed.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Dmitry Osipenko 2018-12-12 23:38:57 +03:00 committed by Joerg Roedel
parent ce2785a75d
commit 568ece5bab
2 changed files with 4 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/iommu/tegra-smmu.c
View File

@ -982,10 +982,6 @@ struct tegra_smmu *tegra_smmu_probe(struct device *dev,
u32 value;
int err;
/* This can happen on Tegra20 which doesn't have an SMMU */
if (!soc)
return NULL;
smmu = devm_kzalloc(dev, sizeof(*smmu), GFP_KERNEL);
if (!smmu)
return ERR_PTR(-ENOMEM);

6
drivers/memory/tegra/mc.c
View File

@ -695,11 +695,13 @@ static int tegra_mc_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "failed to register reset controller: %d\n",
err);
if (IS_ENABLED(CONFIG_TEGRA_IOMMU_SMMU)) {
if (IS_ENABLED(CONFIG_TEGRA_IOMMU_SMMU) && mc->soc->smmu) {
mc->smmu = tegra_smmu_probe(&pdev->dev, mc->soc->smmu, mc);
if (IS_ERR(mc->smmu))
if (IS_ERR(mc->smmu)) {
dev_err(&pdev->dev, "failed to probe SMMU: %ld\n",
PTR_ERR(mc->smmu));
mc->smmu = NULL;
}
}
if (IS_ENABLED(CONFIG_TEGRA_IOMMU_GART) && !mc->soc->smmu) {