Commit 8979b02a authored by Stefan Berger's avatar Stefan Berger Committed by Jarkko Sakkinen

tpm: Fix reference count to main device

The main device is currently not properly released due to one additional
reference to the 'devs' device which is only released in case of a TPM 2.
So, also get the additional reference only in case of a TPM2.

Fixes: fdc915f7 ("tpm: expose spaces via a device link /dev/tpmrm<n>")
Signed-off-by: default avatarStefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: default avatarJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: default avatarJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: default avatarJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
parent e6aef069
......@@ -191,8 +191,9 @@ struct tpm_chip *tpm_chip_alloc(struct device *pdev,
/* get extra reference on main device to hold on
* behalf of devs. This holds the chip structure
* while cdevs is in use. The corresponding put
* is in the tpm_devs_release
* is in the tpm_devs_release (TPM2 only)
*/
if (chip->flags & TPM_CHIP_FLAG_TPM2)
get_device(&chip->dev);
if (chip->dev_num == 0)
......
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