https://github.com/torvalds/linux
Revision 1a2dcff881059dedc14fafc8a442664c8dbd60f1 authored by Halil Pasic on 23 July 2019, 22:51:55 UTC, committed by Heiko Carstens on 26 July 2019, 11:36:12 UTC
On s390 ZONE_DMA is up to 2G, i.e. ARCH_ZONE_DMA_BITS should be 31 bits.
The current value is 24 and makes __dma_direct_alloc_pages() take a
wrong turn first (but __dma_direct_alloc_pages() recovers then).

Let's correct ARCH_ZONE_DMA_BITS value and avoid wrong turns.

Signed-off-by: Halil Pasic <pasic@linux.ibm.com>
Reported-by: Petr Tesarik <ptesarik@suse.cz>
Fixes: c61e9637340e ("dma-direct: add support for allocation from ZONE_DMA and ZONE_DMA32")
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
1 parent 9779048
History
Tip revision: 1a2dcff881059dedc14fafc8a442664c8dbd60f1 authored by Halil Pasic on 23 July 2019, 22:51:55 UTC
s390/dma: provide proper ARCH_ZONE_DMA_BITS value
Tip revision: 1a2dcff
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