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iommu/mediatek: Cleanup pericfg lookup flow 

Since only the INFRA type IOMMU needs to modify register(s) in the
pericfg iospace, it's safe to drop the pericfg_comp_str NULL check;
also, directly assign the regmap handle to data->pericfg instead of
to the infracfg variable to improve code readability.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Link: https://lore.kernel.org/r/20220616110830.26037-6-angelogioacchino.delregno@collabora.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
AngeloGioacchino Del Regno 2022-06-16 13:08:30 +02:00 committed by Joerg Roedel
parent 7d748ffdee
commit 21fd9be431
1 changed files with 5 additions and 7 deletions
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12
drivers/iommu/mtk_iommu.c
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@ -1217,15 +1217,13 @@ static int mtk_iommu_probe(struct platform_device *pdev)
dev_err(dev, "mm dts parse fail(%d).", ret);
goto out_runtime_disable;
}
} else if (MTK_IOMMU_IS_TYPE(data->plat_data, MTK_IOMMU_TYPE_INFRA) &&
data->plat_data->pericfg_comp_str) {
infracfg = syscon_regmap_lookup_by_compatible(data->plat_data->pericfg_comp_str);
if (IS_ERR(infracfg)) {
ret = PTR_ERR(infracfg);
} else if (MTK_IOMMU_IS_TYPE(data->plat_data, MTK_IOMMU_TYPE_INFRA)) {
p = data->plat_data->pericfg_comp_str;
data->pericfg = syscon_regmap_lookup_by_compatible(p);
if (IS_ERR(data->pericfg)) {
ret = PTR_ERR(data->pericfg);
goto out_runtime_disable;
}
data->pericfg = infracfg;
}
platform_set_drvdata(pdev, data);