On Wed, 17 Mar 2021 16:59:08 +0100, Greg KH <[email protected]> wrote:
Is your char device listed in /sys/dev/char/ ?
If not, then you have something wrong with your call to device_create().
If so, then you need to look at whatever tool is creating your device
nodes in /dev. Usually the kernel handles this with devtmpfs, but I do
not know what your system uses for this.
Indeed it is. I am working with a fairly minimal system on a Xilinx
Microblaze soft-core CPU. I have udev installed, but I'm not sure about
devtmpfs. I'll start digging in that direction and see what I find.
Also, why a full major? Why not just use the misc_dev api instead that
does all of the above "housekeeping" for you automagically?
Simply because I wasn't aware of the misc_dev API :) But that does look
like a nice abstraction that will save me some boilerplate, so thanks
for pointing that out.
Thanks,
Greg
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