lkml.org 
[lkml]   [2017]   [Sep]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 2/2] scsi: Align queue to ARCH_DMA_MINALIGN in non-coherent DMA mode
> +	if (plat_device_is_coherent(dev))

We can't just call platform device code. We'll need a proper
DMA API call for this.

> + blk_queue_dma_alignment(q, 0x04 - 1);
> + else
> + blk_queue_dma_alignment(q, dma_get_cache_alignment() - 1);

Which we already have with dma_get_cache_alignment, except that it
doesn't take a struct device pointer and doesn't call into dma_map
ops. So please add a struct device argument to dma_get_cache_alignment,
and let it call into dma_map_ops where needed.

With that you can replace the above with:

blk_queue_dma_alignment(q,
max(0x04U, dma_get_cache_alignment(dev)) - 1);

\
 
 \ /
  Last update: 2017-09-11 09:40    [W:0.042 / U:2.628 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site