On Sat, 29 Aug 2020 at 10:31, Christoph Hellwig wrote:
>
> On Fri, Aug 28, 2020 at 11:09:43AM -0400, Rich Felker wrote:
> > > However, by looking at the code, one get the feeling that the DMA
> > > support is somewhat prepared to be made optional. I guess it has never
> > > been really tested, as
On Fri, Aug 28, 2020 at 11:09:43AM -0400, Rich Felker wrote:
> > However, by looking at the code, one get the feeling that the DMA
> > support is somewhat prepared to be made optional. I guess it has never
> > been really tested, as the Kconfig option has "depends on HAS_DMA" -
> > and it's been l
On Fri, Aug 28, 2020 at 11:26:57AM +0200, Ulf Hansson wrote:
> On Fri, 28 Aug 2020 at 06:24, Christoph Hellwig wrote:
> >
> > On Thu, Aug 27, 2020 at 10:11:53PM -0400, Rich Felker wrote:
> > > > This change broke SD card support on J2 because MMC_SPI spuriously
> > > > depends on HAS_DMA. It looks
On Fri, 28 Aug 2020 at 06:24, Christoph Hellwig wrote:
>
> On Thu, Aug 27, 2020 at 10:11:53PM -0400, Rich Felker wrote:
> > > This change broke SD card support on J2 because MMC_SPI spuriously
> > > depends on HAS_DMA. It looks like it can be fixed just by removing
> > > that dependency from drive
On Thu, Aug 27, 2020 at 10:11:53PM -0400, Rich Felker wrote:
> > This change broke SD card support on J2 because MMC_SPI spuriously
> > depends on HAS_DMA. It looks like it can be fixed just by removing
> > that dependency from drivers/mmc/host/Kconfig.
>
> It can't. mmp_spi_probe fails with ENOME
On Thu, Aug 27, 2020 at 10:00:48PM -0400, Rich Felker wrote:
> On Tue, Jul 14, 2020 at 02:18:55PM +0200, Christoph Hellwig wrote:
> > The code handling non-coherent DMA depends on being able to remap code
> > as non-cached. But that can't be done without an MMU, so using this
> > option on NOMMU b
On Tue, Jul 14, 2020 at 02:18:55PM +0200, Christoph Hellwig wrote:
> The code handling non-coherent DMA depends on being able to remap code
> as non-cached. But that can't be done without an MMU, so using this
> option on NOMMU builds is broken.
>
> Signed-off-by: Christoph Hellwig
> ---
> arch
The code handling non-coherent DMA depends on being able to remap code
as non-cached. But that can't be done without an MMU, so using this
option on NOMMU builds is broken.
Signed-off-by: Christoph Hellwig
---
arch/sh/Kconfig | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a
On Sat, Jun 27, 2020 at 08:01:17PM -0500, Rob Landley wrote:
> On 6/26/20 3:07 AM, Christoph Hellwig wrote:
> > The code handling non-coherent DMA depends on being able to remap code
> > as non-cached. But that can't be done without an MMU, so using this
> > option on NOMMU builds is broken.
>
>
On 6/26/20 3:07 AM, Christoph Hellwig wrote:
> The code handling non-coherent DMA depends on being able to remap code
> as non-cached. But that can't be done without an MMU, so using this
> option on NOMMU builds is broken.
I'm working on a nommu j-core board that's doing DMA behind the OS's back
The code handling non-coherent DMA depends on being able to remap code
as non-cached. But that can't be done without an MMU, so using this
option on NOMMU builds is broken.
Signed-off-by: Christoph Hellwig
---
arch/sh/Kconfig | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a
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