Newbie questions
- From: kamputty@xxxxxxxxxxxxx
- Date: Thu, 29 Mar 2007 17:22:14 GMT
Hi all,
I've been asked to modify 2 character device drivers, and I've come
across some issues
#1. Currently, the major and minor numbers are hardcoded. They state:
"Major numbers should be assigned dynamically". Is there a call to do
this? Both drivers should have the same MAJOR number, but different
MINOR numbers.
#2. Within my "write" function, it is currently writing the data, but
if there is an issue (latency etc), the write function waits until the
block is clear. I need to change this so that the write function does
not block, but does a queuing type of process...being a newbie at
this, is there a way to have a process that run within the driver that
just handles requests (write in this case) as a
daemon/thread/interrupt etc?
In other words, I need to change the write function to "issue" the
command, and let another(?) function do the actual writing, so the
caller of the driver does not get blocked etc...
any any any any any advice, suggestions would be super greatly
appriciated!
Thanks!
~Kam (^8*
.
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