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iommu/amd: Check for error states first in iommu_go_to_state()

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Check if we are in an error state already before calling
into state_next().

Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Joerg Roedel 2017-06-16 16:09:57 +02:00
parent 1b1e942e34
commit 151b09031a
1 changed files with 2 additions and 2 deletions
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4
drivers/iommu/amd_iommu_init.c
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@ -2467,14 +2467,14 @@ static int __init state_next(void)
static int __init iommu_go_to_state(enum iommu_init_state state)
{
int ret = 0;
int ret = -EINVAL;
while (init_state != state) {
ret = state_next();
if (init_state == IOMMU_NOT_FOUND ||
init_state == IOMMU_INIT_ERROR ||
init_state == IOMMU_CMDLINE_DISABLED)
break;
ret = state_next();
}
return ret;