iommu/exynos: Improve page fault debug message

Add master device name to default IOMMU fault message to make easier to
find which device triggered the fault. While at it, move printing some
information (like page table base and first level entry addresses) to
dev_dbg(), because those are typically not very useful for typical device
driver user/developer not equipped with hardware debugging tools.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 57ba0d3091ea257a221de36f3143311db3989d63..ac726e1760de2729c23b38778c6224789902fb83 100644 (file)
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -381,13 +381,14 @@ static void show_fault_information(struct sysmmu_drvdata *data,
 {
        sysmmu_pte_t *ent;
 
-       dev_err(data->sysmmu, "%s FAULT occurred at %#x (page table base: %pa)\n",
-               finfo->name, fault_addr, &data->pgtable);
+       dev_err(data->sysmmu, "%s: %s FAULT occurred at %#x\n",
+               dev_name(data->master), finfo->name, fault_addr);
+       dev_dbg(data->sysmmu, "Page table base: %pa\n", &data->pgtable);
        ent = section_entry(phys_to_virt(data->pgtable), fault_addr);
-       dev_err(data->sysmmu, "\tLv1 entry: %#x\n", *ent);
+       dev_dbg(data->sysmmu, "\tLv1 entry: %#x\n", *ent);
        if (lv1ent_page(ent)) {
                ent = page_entry(ent, fault_addr);
-               dev_err(data->sysmmu, "\t Lv2 entry: %#x\n", *ent);
+               dev_dbg(data->sysmmu, "\t Lv2 entry: %#x\n", *ent);
        }
 }