Re: [PATCH v2 2/2] mmc: sdhci-tegra: Specify valid DMA mask

2016-03-04 Thread Arnd Bergmann
On Friday 04 March 2016 15:43:56 Alexandre Courbot wrote: > > > > Yeah, I'm not too sure what is the point of setting the fake mask to > > be honest, but you are definitely right that it is a contradiction to > > call a DMA function on a device that is not DMA-capable. > > Ah, I finally got it - w

Re: [PATCH v2 2/2] mmc: sdhci-tegra: Specify valid DMA mask

2016-03-03 Thread Alexandre Courbot
On Fri, Mar 4, 2016 at 3:08 PM, Alexandre Courbot wrote: > On Wed, Mar 2, 2016 at 8:25 PM, Arnd Bergmann wrote: >> On Wednesday 02 March 2016 19:36:23 Alexandre Courbot wrote: >>> On Wed, Mar 2, 2016 at 6:34 AM, Arnd Bergmann wrote: >>> > On Tuesday 01 March 2016 13:32:44 Alexandre Courbot wrote

Re: [PATCH v2 2/2] mmc: sdhci-tegra: Specify valid DMA mask

2016-03-03 Thread Alexandre Courbot
On Wed, Mar 2, 2016 at 8:25 PM, Arnd Bergmann wrote: > On Wednesday 02 March 2016 19:36:23 Alexandre Courbot wrote: >> On Wed, Mar 2, 2016 at 6:34 AM, Arnd Bergmann wrote: >> > On Tuesday 01 March 2016 13:32:44 Alexandre Courbot wrote: >> >> On T210, the sdhci controller can address more than 32

Re: [PATCH v2 2/2] mmc: sdhci-tegra: Specify valid DMA mask

2016-03-02 Thread Arnd Bergmann
On Wednesday 02 March 2016 19:36:23 Alexandre Courbot wrote: > On Wed, Mar 2, 2016 at 6:34 AM, Arnd Bergmann wrote: > > On Tuesday 01 March 2016 13:32:44 Alexandre Courbot wrote: > >> On T210, the sdhci controller can address more than 32 bits of address > >> space. Failing to express this fact re

Re: [PATCH v2 2/2] mmc: sdhci-tegra: Specify valid DMA mask

2016-03-02 Thread Alexandre Courbot
On Wed, Mar 2, 2016 at 6:34 AM, Arnd Bergmann wrote: > On Tuesday 01 March 2016 13:32:44 Alexandre Courbot wrote: >> On T210, the sdhci controller can address more than 32 bits of address >> space. Failing to express this fact results in the use of bounce >> buffers and affects performance. >> >>

Re: [PATCH v2 2/2] mmc: sdhci-tegra: Specify valid DMA mask

2016-03-01 Thread Arnd Bergmann
On Tuesday 01 March 2016 13:32:44 Alexandre Courbot wrote: > On T210, the sdhci controller can address more than 32 bits of address > space. Failing to express this fact results in the use of bounce > buffers and affects performance. > > Signed-off-by: Alexandre Courbot I don't get this one. Why

[PATCH v2 2/2] mmc: sdhci-tegra: Specify valid DMA mask

2016-02-29 Thread Alexandre Courbot
On T210, the sdhci controller can address more than 32 bits of address space. Failing to express this fact results in the use of bounce buffers and affects performance. Signed-off-by: Alexandre Courbot --- drivers/mmc/host/sdhci-tegra.c | 8 1 file changed, 8 insertions(+) diff --git a