Messages in this thread |  | | | Date | Wed, 14 Dec 2005 09:43:00 +0300 | | From | Vitaly Wool <> | | Subject | Re: [spi-devel-general] [patch 2.6.15-rc5-mm2] SPI, priority inversion tweak |
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Okay, sorry, I've misundastood that.
Vitaly
David Brownell wrote:
>On Tuesday 13 December 2005 1:49 pm, Vitaly Wool wrote: > > >>So you're turning this to be unsafe if the buffer is in use, right? Funny... >> >> > >I have no idea what you mean by that comment. The parameters to that >function have always been documented as "will copy", and the two branches >(busy/not) differ only in _which_ buffer they use from the heap (the >fast pre-allocated one, or a freshly allocated scratch buffer). Heap >buffers are by definition DMA-safe. > >- Dave > > > > >>David Brownell wrote: >> >> >> >>>This is an updated version of the patch from Mark Underwood, handling >>>the no-memory case better and using SLAB_KERNEL not SLAB_ATOMIC. >>> >>> >>> > > > >
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