diff options
| author | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2016-02-08 22:31:08 +0200 |
|---|---|---|
| committer | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2016-02-10 04:12:08 +0200 |
| commit | 8e0ee3c9faed7ca68807ea45141775856c438ac0 (patch) | |
| tree | b458057391012211f0a69e22270579f2639d4d7d /drivers/char/tpm | |
| parent | 72c91ce8523ae5828fe5e4417ae0aaab53707a08 (diff) | |
tpm: fix the cleanup of struct tpm_chip
If the initialization fails before tpm_chip_register(), put_device()
will be not called, which causes release callback not to be called.
This patch fixes the issue by adding put_device() to devres list of
the parent device.
Fixes: 313d21eeab ("tpm: device class for tpm")
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
cc: stable@vger.kernel.org
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Diffstat (limited to 'drivers/char/tpm')
| -rw-r--r-- | drivers/char/tpm/tpm-chip.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/char/tpm/tpm-chip.c b/drivers/char/tpm/tpm-chip.c index 1a9dcee8da5a..252142524ff2 100644 --- a/drivers/char/tpm/tpm-chip.c +++ b/drivers/char/tpm/tpm-chip.c @@ -136,6 +136,8 @@ struct tpm_chip *tpmm_chip_alloc(struct device *dev, chip->cdev.owner = chip->pdev->driver->owner; chip->cdev.kobj.parent = &chip->dev.kobj; + devm_add_action(dev, (void (*)(void *)) put_device, &chip->dev); + return chip; } EXPORT_SYMBOL_GPL(tpmm_chip_alloc); @@ -171,7 +173,7 @@ static int tpm_add_char_device(struct tpm_chip *chip) static void tpm_del_char_device(struct tpm_chip *chip) { cdev_del(&chip->cdev); - device_unregister(&chip->dev); + device_del(&chip->dev); } static int tpm1_chip_register(struct tpm_chip *chip) |