iommu/vt-d: Check return value of acpi_bus_get_device()

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Checking adev == NULL is not sufficient as
acpi_bus_get_device() might not touch the value of this
parameter in an error case, so check the return value
directly.

Fixes: ed40356b5f
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>

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Joerg Roedel 2014-08-21 23:06:48 +02:00

parent c4a783b89e

commit c0df975f90

1 changed files with 1 additions and 2 deletions

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drivers/iommu/dmar.c

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