Re: Device to device data transfer woes

Philip Blundell (philb@gnu.org)
Sat, 23 Jan 1999 19:29:50 +0100

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Maybe in reply to: Mike Oliphant: "Device to device data transfer woes"

>I am writing a char driver that needs to access the audio system
>directly. This is no problem, except that the file operations of the audio
>driver expect data to be in user space.

Use set_fs(get_ds()) to allow the user memory access functions to get at
kernel memory too. You need to save the old value beforehand and restore it
afterwards.

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Next message: Pekka Pietik{inen: "Re: bttv driver freezes 2.2.0-pre8 and 2.2.0-pre9"
Previous message: Philip Blundell: "Re: 2.2.0-pre9 (final): PPP/lo TX errors; PPPd doesn't compile."
Maybe in reply to: Mike Oliphant: "Device to device data transfer woes"