iommu/pamu: WARN when fsl_pamu_probe() is called more than once

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The function probes the PAMU hardware from device-tree
specifications. It initializes global variables and can thus
be only safely called once.

Add a check that that prints a warning when its called more
than once.

Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Joerg Roedel 2017-08-09 16:15:43 +02:00

parent af29d9fa41

commit 07eb6fdf49

1 changed files with 7 additions and 0 deletions

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drivers/iommu/fsl_pamu.c

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