powerpc/iseries: Fix oops reading from /proc/iSeries/mf/*/cmdline
commit1d6ed32226326a6e6cd67cd9ee4294bcbb0c9a15
authorBenjamin Herrenschmidt <benh@kernel.crashing.org>
Fri, 11 Sep 2009 05:36:09 +0000 (11 15:36 +1000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Fri, 11 Sep 2009 06:01:15 +0000 (11 16:01 +1000)
tree0baedebba58eb55661ac7a39027e48576652424a
parentbc00351edd5c1b84d48c3fdca740fedfce4ae6ce
powerpc/iseries: Fix oops reading from /proc/iSeries/mf/*/cmdline

That code uses dma_mapping_error() with a NULL device, which is
a bad idea :-) The proper fix might be to start using some kind
of pseudo device for all these low level mappings with the
hypervisor but that will be for another day. Since it directly
calls into the low level iommu code, I see no problem in having
it directly test against DMA_ERROR_CODE instead of using the
accessors with a NULL argument for now.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/platforms/iseries/mf.c