Messages in this thread | | | Date | Mon, 11 Dec 2006 11:07:50 -0600 | From | Corey Minyard <> | Subject | Re: [PATCH] Add the ability to layer another driver over the serial driver |
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Tilman Schmidt wrote: > On Mon, 11 Dec 2006 10:20:16 +0000, Alan wrote: > >> This looks wrong. You already have a kernel interface to serial drivers. >> It is called a line discipline. We use it for ppp, we use it for slip, we >> use it for a few other things such as attaching sync drivers to some >> devices. >> > > I was under the impression that line disciplines need a user space > process to open the serial device and push them onto it. Is there > a way for a driver to attach to a serial port through the line > discipline interface from kernel space, eg. from an initialization, > module load, or probe function? > Module initialization functions run in a task context, so that's generally not a problem. The probe function depends on the driver, I guess, but most I have seen are in task context.
-Corey
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