Sricharan R efc8551a27
of: device: Fix overflow of coherent_dma_mask ...
Size of the dma-range is calculated as coherent_dma_mask + 1
and passed to arch_setup_dma_ops further. It overflows when
the coherent_dma_mask is set for full 64 bits 0xFFFFFFFFFFFFFFFF,
resulting in size getting passed as 0 wrongly. Fix this by
passsing in max(mask, mask + 1). Note that in this case
when the mask is set to full 64bits, we will be passing the mask
itself to arch_setup_dma_ops instead of the size. The real fix
for this should be to make arch_setup_dma_ops receive the
mask and handle it, to be done in the future.
Reviewed-by: Robin Murphy <robin.murphy@arm.com >
Acked-by: Rob Herring <robh@kernel.org >
Signed-off-by: Sricharan R <sricharan@codeaurora.org >
Signed-off-by: Joerg Roedel <jroedel@suse.de >
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efc8551a27