Messages in this thread | | | Date | Mon, 20 Apr 2015 09:56:48 -0600 | From | Jason Gunthorpe <> | Subject | Re: [tpmdd-devel] [RFC PATCH 1/2] tee: generic TEE subsystem |
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On Mon, Apr 20, 2015 at 04:54:32PM +0200, Greg Kroah-Hartman wrote: > On Sun, Apr 19, 2015 at 11:08:00PM -0600, Jason Gunthorpe wrote: > > I still suspect the expected way to write a new mid layer is to create > > your own struct device and not rely on misc_device, > > Yes, that is the way. You can not use misc_device for anything other > than creating the char node that your driver can use through the fileops > you pass to it. > > Do not use a misc_device to create sysfs files for, or anything else, it > will be wrong and racy, as you have pointed out.
Thanks!
Can you quickly comment on when a misc device should be used compared to alloc_chrdev_region & cdev_add ?
Jason
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