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authorJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>2016-02-08 22:31:08 +0200
committerJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>2016-02-10 04:12:08 +0200
commit8e0ee3c9faed7ca68807ea45141775856c438ac0 (patch)
treeb458057391012211f0a69e22270579f2639d4d7d /drivers/char/tpm/tpm-chip.c
parent72c91ce8523ae5828fe5e4417ae0aaab53707a08 (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/tpm-chip.c')
-rw-r--r--drivers/char/tpm/tpm-chip.c4
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)

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