Messages in this thread | | | Date | Thu, 9 Jul 2015 12:25:25 -0600 | From | Jason Gunthorpe <> | Subject | Re: [PATCH v4 3/5] tee: generic TEE subsystem |
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On Thu, Jul 09, 2015 at 02:49:08PM +0200, Jens Wiklander wrote: > > Generally in a scheme like this we'd see open and release get/put the > > underlying module handle to prevent driver removal while the char dev > > is open. Otherwise module removal will hang here. > > I'm perhaps misunderstanding you. While the cdev has any open file > descriptors rmmod will fail with "Resource temporarily unavailable" > because of fops_get() in chrdev_open().
Hmm, I see, you've done this:
+ cdev_init(&teedev->cdev, &tee_fops); + teedev->cdev.owner = teedesc->owner;
And owner here is the driver module? Interesting.. Looks OK..
Jason
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