Re: [PATCH 2/2] ARM: dma-mapping: allow larger DMA mask than supported

2019-05-21 Thread Russell King - ARM Linux admin
On Tue, May 21, 2019 at 02:47:29PM +0200, Christoph Hellwig wrote: > Since Linux 5.1 we allow drivers to just set the largest DMA mask they > support instead of falling back to smaller ones. This doesn't make sense. "they" is confusing - why would a driver set a DMA mask larger than the driver

Re: [PATCH 2/2] ARM: dma-mapping: allow larger DMA mask than supported

2019-05-21 Thread Christoph Hellwig
On Tue, May 21, 2019 at 02:00:47PM +0100, Russell King - ARM Linux admin wrote: > On Tue, May 21, 2019 at 02:47:29PM +0200, Christoph Hellwig wrote: > > Since Linux 5.1 we allow drivers to just set the largest DMA mask they > > support instead of falling back to smaller ones. > > This doesn't