Re: [PATCH] [RFC] gpu: host1x: shut up warning about DMA API misuse

2017-04-20 Thread Mikko Perttunen
On 20.04.2017 13:02, Arnd Bergmann wrote: On Thu, Apr 20, 2017 at 11:44 AM, Mikko Perttunen wrote: On 20.04.2017 11:25, Arnd Bergmann wrote: On Thu, Apr 20, 2017 at 9:02 AM, Mikko Perttunen wrote: On 19.04.2017 21:24, Arnd Bergmann wrote: I don't think this can be a per-platform policy.

Re: [PATCH] [RFC] gpu: host1x: shut up warning about DMA API misuse

2017-04-20 Thread Mikko Perttunen
On 20.04.2017 11:25, Arnd Bergmann wrote: On Thu, Apr 20, 2017 at 9:02 AM, Mikko Perttunen wrote: On 19.04.2017 21:24, Arnd Bergmann wrote: When dma_addr_t and phys_addr_t are not the same size, we get a warning from the dma_alloc_wc function: drivers/gpu/host1x/cdma.c: In function 'host1x_p

Re: [PATCH] [RFC] gpu: host1x: shut up warning about DMA API misuse

2017-04-20 Thread Russell King - ARM Linux
On Thu, Apr 20, 2017 at 10:25:01AM +0200, Arnd Bergmann wrote: > On Thu, Apr 20, 2017 at 9:02 AM, Mikko Perttunen wrote: > > I think we have a "policy" on Tegra that the DMA API will never allocate > > using the IOMMU (Thierry can elaborate on this), which is why I wrote the > > code with that ass

Re: [PATCH] [RFC] gpu: host1x: shut up warning about DMA API misuse

2017-04-20 Thread Mikko Perttunen
On 19.04.2017 21:24, Arnd Bergmann wrote: When dma_addr_t and phys_addr_t are not the same size, we get a warning from the dma_alloc_wc function: drivers/gpu/host1x/cdma.c: In function 'host1x_pushbuffer_init': drivers/gpu/host1x/cdma.c:94:48: error: passing argument 3 of 'dma_alloc_wc' from in

Re: [PATCH] [RFC] gpu: host1x: shut up warning about DMA API misuse

2017-04-20 Thread Arnd Bergmann
On Thu, Apr 20, 2017 at 11:49 AM, Russell King - ARM Linux wrote: > On Thu, Apr 20, 2017 at 10:25:01AM +0200, Arnd Bergmann wrote: >> On Thu, Apr 20, 2017 at 9:02 AM, Mikko Perttunen wrote: >> > I think we have a "policy" on Tegra that the DMA API will never allocate >> > using the IOMMU (Thierry

Re: [PATCH] [RFC] gpu: host1x: shut up warning about DMA API misuse

2017-04-20 Thread Arnd Bergmann
On Thu, Apr 20, 2017 at 11:44 AM, Mikko Perttunen wrote: > On 20.04.2017 11:25, Arnd Bergmann wrote: >> On Thu, Apr 20, 2017 at 9:02 AM, Mikko Perttunen wrote: >>> On 19.04.2017 21:24, Arnd Bergmann wrote: >> >> I don't think this can be a per-platform policy. > > > Yeah, now that we are using th

Re: [PATCH] [RFC] gpu: host1x: shut up warning about DMA API misuse

2017-04-20 Thread Arnd Bergmann
On Thu, Apr 20, 2017 at 9:02 AM, Mikko Perttunen wrote: > On 19.04.2017 21:24, Arnd Bergmann wrote: >> >> When dma_addr_t and phys_addr_t are not the same size, we get a warning >> from the dma_alloc_wc function: >> >> drivers/gpu/host1x/cdma.c: In function 'host1x_pushbuffer_init': >> drivers/gpu

[PATCH] [RFC] gpu: host1x: shut up warning about DMA API misuse

2017-04-19 Thread Arnd Bergmann
When dma_addr_t and phys_addr_t are not the same size, we get a warning from the dma_alloc_wc function: drivers/gpu/host1x/cdma.c: In function 'host1x_pushbuffer_init': drivers/gpu/host1x/cdma.c:94:48: error: passing argument 3 of 'dma_alloc_wc' from incompatible pointer type [-Werror=incompatibl