Re: [linux-usb-devel] DMA buffer or kmalloced buffer for transfer_buffer

2006-05-24 Thread David Brownell
On Tuesday 23 May 2006 10:52 pm, Oliver Neukum wrote: > Am Mittwoch, 24. Mai 2006 07:35 schrieb Xu Nakajima: > > to kmalloc; Any > > idea what is the advantage of using a DMA buffer > > 1. The buffer is mapped only once, upon allocation, not every submission. With the disadvantage that it's prob

Re: [linux-usb-devel] DMA buffer or kmalloced buffer for transfer_buffer

2006-05-23 Thread Oliver Neukum
Am Mittwoch, 24. Mai 2006 07:35 schrieb Xu Nakajima: > Hello, > I had asked this question a few days ago in > zd1211 mailing list and did not get an answer > and I think maybe this question is more suitable > to this forum. So please don't regard this as > a cross posting. > > zd1211 is a USB w

[linux-usb-devel] DMA buffer or kmalloced buffer for transfer_buffer

2006-05-23 Thread Xu Nakajima
Hello, I had asked this question a few days ago in zd1211 mailing list and did not get an answer and I think maybe this question is more suitable to this forum. So please don't regard this as a cross posting. zd1211 is a USB wireless dongle which has a linux driver. see: http://zd1211.ath.cx