[PATCH] powerpc: IOMMU: don't ioremap null addresses

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240-ioremap-null-ptr-test.patch

Under highly unusual circumstances, a buggy driver will ask a null ptr
to be ioremapped, an operation that curently succeeds but leads to
later trouble.  Instead, refuse to remap the null pointer.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
(cherry picked from e71d9e598533c1889e7162f5f4647e5d378c102c commit)

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Linas Vepstas 2005-11-03 18:55:14 -06:00 • committed by Paul Mackerras

parent 3914ac7b0e

commit d177c207ba

1 changed files with 1 additions and 1 deletions

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arch/powerpc/mm/pgtable_64.c

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