Re: [PATCH 01/51] DMA-API: provide a helper to set both DMA and coherent DMA masks

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, 2013-09-19 at 22:25 +0100, Russell King wrote:
> Provide a helper to set both the DMA and coherent DMA masks to the
> same value - this avoids duplicated code in a number of drivers,
> sometimes with buggy error handling, and also allows us identify
> which drivers do things differently.
> 
> Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>
> ---
>  Documentation/DMA-API-HOWTO.txt |   37 ++++++++++++++++++++++---------------
>  Documentation/DMA-API.txt       |    8 ++++++++
>  include/linux/dma-mapping.h     |   14 ++++++++++++++
>  3 files changed, 44 insertions(+), 15 deletions(-)
> 
> diff --git a/Documentation/DMA-API-HOWTO.txt b/Documentation/DMA-API-HOWTO.txt
> index 14129f1..5e98303 100644
> --- a/Documentation/DMA-API-HOWTO.txt
> +++ b/Documentation/DMA-API-HOWTO.txt
[...]
> -dma_set_coherent_mask() will always be able to set the same or a
> -smaller mask as dma_set_mask(). However for the rare case that a
> +The coherent coherent mask will always be able to set the same or a
> +smaller mask as the streaming mask. However for the rare case that a
[...]

The new wording doesn't make sense; a mask doesn't set itself.  I would
suggest:

"The coherent mask can always be set to the same or a smaller mask than
the streaming mask."

Ben.

-- 
Ben Hutchings, Staff Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux