Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1704605

Re: [PATCH v3] dma-mapping: skip USB devices when configuring DMA during probe

Show all headers | View raw

I think the root problem is that the code added by
" of/acpi: Configure dma operations at probe time for platform/amba/pci bus
devices"

is completely bogus and needs to be reverted.  We can't simply iterate
over all devices in the system and set up dma for them.  We'll need
to ask the firmware / OF what root port this applies to and only
apply it to those buses.

Note that the current code checks for a OF or ACPI node already,
so we should start by refining these checks.

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH v3] dma-mapping: skip USB devices when configuring DMA during probe Johan Hovold <johan@kernel.org> - 2017-08-03 18:00 +0200
  Re: [PATCH v3] dma-mapping: skip USB devices when configuring DMA  during probe Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-08-03 18:10 +0200
    Re: [PATCH v3] dma-mapping: skip USB devices when configuring DMA  during probe Johan Hovold <johan@kernel.org> - 2017-08-03 18:30 +0200
  Re: [PATCH v3] dma-mapping: skip USB devices when configuring DMA         during probe Christoph Hellwig <hch@lst.de> - 2017-08-05 10:40 +0200
    Re: [PATCH v3] dma-mapping: skip USB devices when configuring DMA  during probe Johan Hovold <johan@kernel.org> - 2017-08-08 20:10 +0200
      Re: [PATCH v3] dma-mapping: skip USB devices when configuring DMA  during probe Stefan Wahren <stefan.wahren@i2se.com> - 2017-08-11 08:10 +0200

csiph-web