Hi Geert,
On Tue, Apr 17, 2018 at 04:30:03PM +0200, Geert Uytterhoeven wrote:
> Hi Jacopo,
>
> CC Christoph
>
> On Tue, Apr 17, 2018 at 4:13 PM, Jacopo Mondi <jacopo+renesas@xxxxxxxxxx> wrote:
> > As of commit 205e1b7f51e4 ("dma-mapping: warn when there is no
> > coherent_dma_mask") the Migo-R platform devices registered without a DMA
> > mask and coherent DMA mask issue the following warning
> >
> > WARNING: CPU: 0 PID: 1 at ./include/linux/dma-mapping.h:516 0x40159e20
> >
> > Set dma mask and coherent DMA mask for Migo-R platforms devices to 32
> > bits as all other SH4a platforms do.
> >
> > Signed-off-by: Jacopo Mondi <jacopo+renesas@xxxxxxxxxx>
>
> Thanks for your patch!
>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
>
> I guess usbf_device.dev.dma_mask should be fixed as well?
I don't get any warning for that. The only platform devices on which
platform_resource_setup_memory() is called on before registering them
are the ones this patch modifies, if I'm not wrong.
>
> BTW, there are plenty of other SH platforms that need similar fixes.
Oh, why am I not surprised? :/
Thanks
j
>
> > ---
> > arch/sh/kernel/cpu/sh4a/setup-sh7722.c | 7 +++++++
> > 1 file changed, 7 insertions(+)
> >
> > diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7722.c b/arch/sh/kernel/cpu/sh4a/setup-sh7722.c
> > index 6b3a26e..3fe1ea7 100644
> > --- a/arch/sh/kernel/cpu/sh4a/setup-sh7722.c
> > +++ b/arch/sh/kernel/cpu/sh4a/setup-sh7722.c
> > @@ -7,6 +7,7 @@
> > * License. See the file "COPYING" in the main directory of this archive
> > * for more details.
> > */
> > +#include <linux/dma-mapping.h>
> > #include <linux/init.h>
> > #include <linux/mm.h>
> > #include <linux/platform_device.h>
> > @@ -347,6 +348,8 @@ static struct platform_device vpu_device = {
> > .name = "uio_pdrv_genirq",
> > .id = 0,
> > .dev = {
> > + .dma_mask = &vpu_device.dev.coherent_dma_mask,
> > + .coherent_dma_mask = DMA_BIT_MASK(32),
> > .platform_data = &vpu_platform_data,
> > },
> > .resource = vpu_resources,
> > @@ -375,6 +378,8 @@ static struct platform_device veu_device = {
> > .name = "uio_pdrv_genirq",
> > .id = 1,
> > .dev = {
> > + .dma_mask = &veu_device.dev.coherent_dma_mask,
> > + .coherent_dma_mask = DMA_BIT_MASK(32),
> > .platform_data = &veu_platform_data,
> > },
> > .resource = veu_resources,
> > @@ -403,6 +408,8 @@ static struct platform_device jpu_device = {
> > .name = "uio_pdrv_genirq",
> > .id = 2,
> > .dev = {
> > + .dma_mask = &jpu_device.dev.coherent_dma_mask,
> > + .coherent_dma_mask = DMA_BIT_MASK(32),
> > .platform_data = &jpu_platform_data,
> > },
> > .resource = jpu_resources,
>
> Gr{oetje,eeting}s,
>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> -- Linus Torvalds
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