From: "Luis A. Montes" <luismontes@isp.com>
To: linux-hotplug@vger.kernel.org
Subject: Help with simple char device
Date: Fri, 31 Dec 2004 05:32:45 +0000 [thread overview]
Message-ID: <1104471165.7269.10.camel@penguin.montes2.org> (raw)
Hi there,
I'm trying to write a simple char device driver. I've used as starting
point code that someone posted recently to the list (I can't find the
post now, it was a file called mymod.c). Anyway, I do:
alloc_chrdev_region()
cdev_alloc()
set owner and file operations
kobject_set_name()
cdev_add()
class_simple_create()
class_simple_device_add()
It nicely creates a /dev/ entry, but it then complains:
wait_for_sysfs[5689]: either wait_for_sysfs (udev 042) needs an update
to handle the device '/class/mydevclass/mydev' properly (no device
symlink) or the sysfs-support of your device's driver needs to be fixed,
please report to <linux-hotplug-devel@lists.sourceforge.net>
Any pointers to what else do I need to do?
--
Luis A. Montes <luismontes@isp.com>
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next reply other threads:[~2004-12-31 5:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-31 5:32 Luis A. Montes [this message]
2004-12-31 6:23 ` Help with simple char device Kay Sievers
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