Re: [PATCH 03/23] TPM: Provide a platform driver for the user emulator driver

Jarkko Sakkinen
2018-08-24T10:03:30Z

On Tue, Aug 21, 2018 at 04:57:09PM +0100, David Howells wrote:
> Provide a platform driver for the user emulator driver. This seems to be
> necessary to stop tpm_chip_find_get() from blowing up because it assumes
> unconditionally that any device will have a driver attached:
>
> if (try_module_get(pos->dev->driver->owner)) {
>
> However, this doesn't then work right because if I remove the TPM device and
> re-add it, the tpm ID isn't recycled (ie, /dev/tpm0 becomes unavailable and
> the new TPM is /dev/tpm1).
>
> Signed-off-by: David Howells <dhowells@redhat.com>

Again, a duplicate.

/Jarkko