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iommu/amd: Improve error handling for amd_iommu_init_pci

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Add error messages to prevent silent failure.

Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Link: https://lore.kernel.org/r/20220301085626.87680-2-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Suravee Suthikulpanit 2022-03-01 14:26:22 +05:30 • committed by Joerg Roedel
parent 754e0b0e35
commit 06687a0380
1 changed files with 11 additions and 3 deletions
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14
drivers/iommu/amd/init.c
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@ -1943,9 +1943,11 @@ static int __init amd_iommu_init_pci(void)
for_each_iommu(iommu) { for_each_iommu(iommu) {
ret = iommu_init_pci(iommu); ret = iommu_init_pci(iommu);
if (ret) if (ret) {
break; pr_err("IOMMU%d: Failed to initialize IOMMU Hardware (error=%d)!\n",
iommu->index, ret);
goto out;
}
/* Need to setup range after PCI init */ /* Need to setup range after PCI init */
iommu_set_cwwb_range(iommu); iommu_set_cwwb_range(iommu);
} }
@ -1961,6 +1963,11 @@ static int __init amd_iommu_init_pci(void)
* active. * active.
*/ */
ret = amd_iommu_init_api(); ret = amd_iommu_init_api();
if (ret) {
pr_err("IOMMU: Failed to initialize IOMMU-API interface (error=%d)!\n",
ret);
goto out;
}
init_device_table_dma(); init_device_table_dma();
@ -1970,6 +1977,7 @@ static int __init amd_iommu_init_pci(void)
if (!ret) if (!ret)
print_iommu_info(); print_iommu_info();
out:
return ret; return ret;
} }