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Commit 0bf4e54d authored by Cho KyongHo's avatar Cho KyongHo Committed by Joerg Roedel
Browse files

iommu/exynos: Enhanced error messages 



Some redundant error message is removed and some error messages
are changed to error level from debug level.

Signed-off-by: default avatarCho KyongHo <pullip.cho@samsung.com>
Signed-off-by: default avatarShaik Ameer Basha <shaik.ameer@samsung.com>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent bf4a1c92

drivers/iommu/exynos-iommu.c

+9 −14
Original line number Diff line number Diff line
@@ -525,7 +525,7 @@ static int exynos_sysmmu_probe(struct platform_device *pdev) 


	irq = platform_get_irq(pdev, 0);

	if (irq <= 0) {

		dev_dbg(dev, "Unable to find IRQ resource\n");

		dev_err(dev, "Unable to find IRQ resource\n");

		return irq;

	}
@@ -787,10 +787,8 @@ static int lv2set_page(sysmmu_pte_t *pent, phys_addr_t paddr, size_t size, 
								short *pgcnt)

{

	if (size == SPAGE_SIZE) {

		if (!lv2ent_fault(pent)) {

			WARN(1, "Trying mapping on 4KiB where mapping exists");

		if (WARN_ON(!lv2ent_fault(pent)))

			return -EADDRINUSE;

		}



		*pent = mk_lv2ent_spage(paddr);

		pgtable_flush(pent, pent + 1);
@@ -798,9 +796,7 @@ static int lv2set_page(sysmmu_pte_t *pent, phys_addr_t paddr, size_t size, 
	} else { /* size == LPAGE_SIZE */

		int i;

		for (i = 0; i < SPAGES_PER_LPAGE; i++, pent++) {

			if (!lv2ent_fault(pent)) {

				WARN(1,

				"Trying mapping on 64KiB where mapping exists");

			if (WARN_ON(!lv2ent_fault(pent))) {

				if (i > 0)

					memset(pent - i, 0, sizeof(*pent) * i);

				return -EADDRINUSE;
@@ -847,8 +843,8 @@ static int exynos_iommu_map(struct iommu_domain *domain, unsigned long l_iova, 
	}



	if (ret)

		pr_debug("%s: Failed to map iova %#x/%#zx bytes\n",

							__func__, iova, size);

		pr_err("%s: Failed(%d) to map %#zx bytes @ %#x\n",

			__func__, ret, size, iova);



	spin_unlock_irqrestore(&priv->pgtablelock, flags);
@@ -872,7 +868,7 @@ static size_t exynos_iommu_unmap(struct iommu_domain *domain, 
	ent = section_entry(priv->pgtable, iova);



	if (lv1ent_section(ent)) {

		if (size < SECT_SIZE) {

		if (WARN_ON(size < SECT_SIZE)) {

			err_pgsize = SECT_SIZE;

			goto err;

		}
@@ -907,7 +903,7 @@ static size_t exynos_iommu_unmap(struct iommu_domain *domain, 
	}



	/* lv1ent_large(ent) == true here */

	if (size < LPAGE_SIZE) {

	if (WARN_ON(size < LPAGE_SIZE)) {

		err_pgsize = LPAGE_SIZE;

		goto err;

	}
@@ -929,8 +925,7 @@ static size_t exynos_iommu_unmap(struct iommu_domain *domain, 
err:

	spin_unlock_irqrestore(&priv->pgtablelock, flags);



	WARN(1,

	"%s: Failed due to size(%#zx) @ %#x is smaller than page size %#zx\n",

	pr_err("%s: Failed: size(%#zx) @ %#x is smaller than page size %#zx\n",

		__func__, size, iova, err_pgsize);



	return 0;