iommu/arm-smmu: Drop if with an always false condition

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The remove and shutdown callback are only called after probe completed
successfully. In this case platform_set_drvdata() was called with a
non-NULL argument and so smmu is never NULL. Other functions in this
driver also don't check for smmu being non-NULL before using it.

Also note that returning an error code from a remove callback doesn't
result in the device staying bound. It's still removed and devm allocated
resources are freed (among others *smmu and the register mapping). So
after an early exit to iommu device stayed around and using it probably
oopses.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/20230321084125.337021-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Uwe Kleine-König 2023-03-21 09:41:16 +01:00 • committed by Joerg Roedel

parent e8d018dd02

commit a2972cb899

1 changed files with 0 additions and 6 deletions

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drivers/iommu/arm/arm-smmu/arm-smmu.c

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