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ALSA: emu10k1: Stop using iommu_present()

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iommu_get_domain_for_dev() is already perfectly happy to return NULL
if the given device has no IOMMU. Drop the unnecessary check in favour
of just handling that condition appropriately.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/9b506b4a4fe8a7f40aa8bad1aafc82426cf3dd92.1649165210.git.robin.murphy@arm.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Robin Murphy 2022-04-05 14:27:54 +01:00 committed by Takashi Iwai
parent bc55cfd571
commit e7ff672165
1 changed files with 1 additions and 4 deletions
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5
sound/pci/emu10k1/emu10k1_main.c
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@ -1751,11 +1751,8 @@ static void snd_emu10k1_detect_iommu(struct snd_emu10k1 *emu)
emu->iommu_workaround = false;
if (!iommu_present(emu->card->dev->bus))
return;
domain = iommu_get_domain_for_dev(emu->card->dev);
if (domain && domain->type == IOMMU_DOMAIN_IDENTITY)
if (!domain || domain->type == IOMMU_DOMAIN_IDENTITY)
return;
dev_notice(emu->card->dev,