On Fri, Feb 26, 2021 at 08:59:50AM +0100, Thomas Zimmermann wrote:
> Greg, do you have comments on this patch?
I'll defer to Alan's comments so far, I would like to see that
addressed.
thanks,
greg k-h
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Greg, do you have comments on this patch?
Am 24.02.21 um 10:23 schrieb Thomas Zimmermann:
USB devices cannot perform DMA and hence have no dma_mask set in their
device structure. Therefore importing dmabuf into a USB-based driver
fails, which breaks joining and mirroring of display in X11.
For
On Thu, Feb 25, 2021 at 09:23:05AM +0100, Takashi Iwai wrote:
> On Thu, 25 Feb 2021 08:57:14 +0100,
> Thomas Zimmermann wrote:
> >
> > Hi
> >
> > Am 24.02.21 um 16:21 schrieb Alan Stern:
> > > On Wed, Feb 24, 2021 at 10:23:04AM +0100, Thomas Zimmermann wrote:
> > >> USB devices cannot perform DMA
Hi!
> USB devices cannot perform DMA and hence have no dma_mask set in their
> device structure. Therefore importing dmabuf into a USB-based driver
> fails, which breaks joining and mirroring of display in X11.
>
> For USB devices, pick the associated USB controller as attachment device.
> This a
On Wed, Feb 24, 2021 at 10:23 AM Thomas Zimmermann wrote:
>
> USB devices cannot perform DMA and hence have no dma_mask set in their
> device structure. Therefore importing dmabuf into a USB-based driver
> fails, which breaks joining and mirroring of display in X11.
>
> For USB devices, pick the a
Am 24.02.21 um 10:23 schrieb Thomas Zimmermann:
USB devices cannot perform DMA and hence have no dma_mask set in their
device structure. Therefore importing dmabuf into a USB-based driver
fails, which breaks joining and mirroring of display in X11.
For USB devices, pick the associated USB contro
On Thu, 25 Feb 2021 08:57:14 +0100,
Thomas Zimmermann wrote:
>
> Hi
>
> Am 24.02.21 um 16:21 schrieb Alan Stern:
> > On Wed, Feb 24, 2021 at 10:23:04AM +0100, Thomas Zimmermann wrote:
> >> USB devices cannot perform DMA and hence have no dma_mask set in their
> >> device structure. Therefore impo
Hi
Am 24.02.21 um 16:21 schrieb Alan Stern:
On Wed, Feb 24, 2021 at 10:23:04AM +0100, Thomas Zimmermann wrote:
USB devices cannot perform DMA and hence have no dma_mask set in their
device structure. Therefore importing dmabuf into a USB-based driver
fails, which breaks joining and mirroring of
On Wed, Feb 24, 2021 at 10:23:04AM +0100, Thomas Zimmermann wrote:
> USB devices cannot perform DMA and hence have no dma_mask set in their
> device structure. Therefore importing dmabuf into a USB-based driver
> fails, which breaks joining and mirroring of display in X11.
>
> For USB devices, pic
