diff options
| author | Ingo Molnar <mingo@kernel.org> | 2017-11-10 08:21:08 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-11-10 08:21:08 +0100 |
| commit | b5cd3b51e247473e290be5cd09e77171e466cd89 (patch) | |
| tree | ac8c87e1b38f61a4c879c574dc9373db41f3df01 /drivers/media/dvb-core/dvb_frontend.c | |
| parent | 376f3bcebdc999cc737d9052109cc33b573b3a8b (diff) | |
| parent | 1c9dbd4615fd751e5e0b99807a3c7c8612e28e20 (diff) | |
Merge branch 'linus' into x86/platform, to refresh the branch
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/media/dvb-core/dvb_frontend.c')
| -rw-r--r-- | drivers/media/dvb-core/dvb_frontend.c | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c index 2fcba1616168..9139d01ba7ed 100644 --- a/drivers/media/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb-core/dvb_frontend.c @@ -141,22 +141,39 @@ struct dvb_frontend_private { static void dvb_frontend_invoke_release(struct dvb_frontend *fe, void (*release)(struct dvb_frontend *fe)); -static void dvb_frontend_free(struct kref *ref) +static void __dvb_frontend_free(struct dvb_frontend *fe) { - struct dvb_frontend *fe = - container_of(ref, struct dvb_frontend, refcount); struct dvb_frontend_private *fepriv = fe->frontend_priv; + if (!fepriv) + return; + dvb_free_device(fepriv->dvbdev); dvb_frontend_invoke_release(fe, fe->ops.release); kfree(fepriv); + fe->frontend_priv = NULL; +} + +static void dvb_frontend_free(struct kref *ref) +{ + struct dvb_frontend *fe = + container_of(ref, struct dvb_frontend, refcount); + + __dvb_frontend_free(fe); } static void dvb_frontend_put(struct dvb_frontend *fe) { - kref_put(&fe->refcount, dvb_frontend_free); + /* + * Check if the frontend was registered, as otherwise + * kref was not initialized yet. + */ + if (fe->frontend_priv) + kref_put(&fe->refcount, dvb_frontend_free); + else + __dvb_frontend_free(fe); } static void dvb_frontend_get(struct dvb_frontend *fe) |