> So, if I2C is a bit different, then it might simply make sense to keep
> the function local for I2C now? This seems like a sensible start to me
> meanwhile.
Then again, the DMA API would be for drivers. If the USB core wants to
check for capable buffers, such a helper might be nice nonetheless.
> > Possibly more useful would be a variant of (IIRC) dma_map_for_device()
> > that will allocate a suitable bounce buffer for non-dma memory.
> > I think it can already do so for memory that is outside the address
> > range that the device can address (eg for a 32bit PCIe master in 64bit
> > syst
> > +/* only works in process context because of stack detection */
> > +static inline bool is_dma_capable_addr(void *addr)
> > +{
> > + return !(is_vmalloc_or_module_addr(addr) ||
> > +object_is_on_stack(addr));
>
> This does not catch kmap'ed buffers which are not directly DMA'abl
On Sunday 28 May 2017 09:33 PM, Wolfram Sang wrote:
> On Fri, May 05, 2017 at 02:08:31PM -0700, Florian Fainelli wrote:
>> On 04/25/2017 05:56 PM, Florian Fainelli wrote:
>>> Changes in v3:
>>>
>>> - added check in usb_gadget_map_request_by_dev (Felipe), new patch
>>> - improved commit message de
On Wednesday 31 May 2017 04:34 PM, David Laight wrote:
> From: Wolfram Sang
>> Sent: 28 May 2017 17:04
>>
>> On Fri, May 05, 2017 at 02:08:31PM -0700, Florian Fainelli wrote:
>>> On 04/25/2017 05:56 PM, Florian Fainelli wrote:
Changes in v3:
- added check in usb_gadget_map_request_
From: Wolfram Sang
> Sent: 28 May 2017 17:04
>
> On Fri, May 05, 2017 at 02:08:31PM -0700, Florian Fainelli wrote:
> > On 04/25/2017 05:56 PM, Florian Fainelli wrote:
> > > Changes in v3:
> > >
> > > - added check in usb_gadget_map_request_by_dev (Felipe), new patch
> > > - improved commit message
On Fri, May 05, 2017 at 02:08:31PM -0700, Florian Fainelli wrote:
> On 04/25/2017 05:56 PM, Florian Fainelli wrote:
> > Changes in v3:
> >
> > - added check in usb_gadget_map_request_by_dev (Felipe), new patch
> > - improved commit message description (Clemens)
> > - added additiona checks for urb
On 04/25/2017 05:56 PM, Florian Fainelli wrote:
> Changes in v3:
>
> - added check in usb_gadget_map_request_by_dev (Felipe), new patch
> - improved commit message description (Clemens)
> - added additiona checks for urb->setup_packet (Alan)
>
> Changes in v2:
>
> - moved the check from usb_star
Changes in v3:
- added check in usb_gadget_map_request_by_dev (Felipe), new patch
- improved commit message description (Clemens)
- added additiona checks for urb->setup_packet (Alan)
Changes in v2:
- moved the check from usb_start_wait_urb() to usb_hcd_map_urb_for_dma()
Florian Fainelli (2):
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