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SubjectRe: [PATCHv3 08/16] staging: vme_user: provide DMA functionality
On 13/06/15 01:28, Greg Kroah-Hartman wrote:
> On Thu, May 28, 2015 at 03:07:05PM +0300, Dmitry Kalinkin wrote:
>> This introduces a new dma device that provides a single ioctl call that
>> provides DMA read and write functionality to the user space.
>>
>> Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
>> Cc: Igor Alekseev <igor.alekseev@itep.ru>
>> ---
>> drivers/staging/vme/devices/vme_user.c | 201 ++++++++++++++++++++++++++++++++-
>> drivers/staging/vme/devices/vme_user.h | 11 ++
>> 2 files changed, 209 insertions(+), 3 deletions(-)
>
> I want to get Martyn's feedback on this, as it's adding a new feature to
> the subsystem that he's going to have to maintain.
>

Sorry about the *really* late reply, loads of emails some how missed my
periodic search of the mailing list.

I'm happy with the addition of DMA, just not sure whether it's worth
adding an extra device file just to handle DMA. Could the user space
application not just use the control device?

--
Martyn Welch (Lead Software Engineer) | Registered in England and Wales
GE Intelligent Platforms | (3828642) at 100 Barbirolli Square
T +44(0)1327322748 | Manchester, M2 3AB
E martyn.welch@ge.com | VAT:GB 927559189


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