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>
diff --git a/drivers/memory/tegra/mc.c b/drivers/memory/tegra/mc.c
index e684e23..3545868 100644
--- a/drivers/memory/tegra/mc.c
+++ b/drivers/memory/tegra/mc.c
@@ -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) {
