Messages in this thread | | | Date | Wed, 14 Dec 2005 22:30:50 +0300 | From | Vitaly Wool <> | Subject | Re: [PATCH/RFC] SPI: add DMAUNSAFE analog to David Brownell's core |
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Greg KH wrote:
>On Wed, Dec 14, 2005 at 08:53:54PM +0300, Vitaly Wool wrote: > > >>Greg KH wrote: >> >> >> >>>What is the speed of your SPI bus? >>> >>>And what are your preformance requirements? >>> >>> >>> >>> >>The maximum frequency for the SPI bus is 26 MHz, WLAN driver is to work >>at true 10 Mbit/sec. >> >> > >Then you should be fine with the copying data and memset stuff, based on >the workload the rest of the kernel does for other busses which have >this same requirement of DMAable buffers. > >And I'm sure David will be glad to have you point out any places in his >code where it accidentally takes data off of the stack instead of >allocating it. > > Hmm, I recall I've already posted some pieces of code with that stuff.
Vitaly
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