diff options
| author | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2023-04-20 10:26:53 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@kernel.org> | 2023-05-26 12:52:05 +0300 |
| commit | fe4526d99e2e06b08bb80316c3a596ea6a807b75 (patch) | |
| tree | 8c60a6db6904b40e1aaa14d1cdddd915cde475f5 /drivers/media | |
| parent | ed17f89e9502f03af493e130620a9bb74c07cf28 (diff) | |
| download | linux-fe4526d99e2e06b08bb80316c3a596ea6a807b75.tar.xz | |
media: cec: core: disable adapter in cec_devnode_unregister
Explicitly disable the CEC adapter in cec_devnode_unregister()
Usually this does not really do anything important, but for drivers
that use the CEC pin framework this is needed to properly stop the
hrtimer. Without this a crash would happen when such a driver is
unloaded with rmmod.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/cec/core/cec-adap.c | 5 | ||||
| -rw-r--r-- | drivers/media/cec/core/cec-core.c | 2 | ||||
| -rw-r--r-- | drivers/media/cec/core/cec-priv.h | 1 |
3 files changed, 7 insertions, 1 deletions
diff --git a/drivers/media/cec/core/cec-adap.c b/drivers/media/cec/core/cec-adap.c index 769ea6b2e1d0..be0c38969479 100644 --- a/drivers/media/cec/core/cec-adap.c +++ b/drivers/media/cec/core/cec-adap.c @@ -1585,7 +1585,7 @@ static void cec_claim_log_addrs(struct cec_adapter *adap, bool block) * * This function is called with adap->lock held. */ -static int cec_adap_enable(struct cec_adapter *adap) +int cec_adap_enable(struct cec_adapter *adap) { bool enable; int ret = 0; @@ -1595,6 +1595,9 @@ static int cec_adap_enable(struct cec_adapter *adap) if (adap->needs_hpd) enable = enable && adap->phys_addr != CEC_PHYS_ADDR_INVALID; + if (adap->devnode.unregistered) + enable = false; + if (enable == adap->is_enabled) return 0; diff --git a/drivers/media/cec/core/cec-core.c b/drivers/media/cec/core/cec-core.c index af358e901b5f..7e153c5cad04 100644 --- a/drivers/media/cec/core/cec-core.c +++ b/drivers/media/cec/core/cec-core.c @@ -191,6 +191,8 @@ static void cec_devnode_unregister(struct cec_adapter *adap) mutex_lock(&adap->lock); __cec_s_phys_addr(adap, CEC_PHYS_ADDR_INVALID, false); __cec_s_log_addrs(adap, NULL, false); + // Disable the adapter (since adap->devnode.unregistered is true) + cec_adap_enable(adap); mutex_unlock(&adap->lock); cdev_device_del(&devnode->cdev, &devnode->dev); diff --git a/drivers/media/cec/core/cec-priv.h b/drivers/media/cec/core/cec-priv.h index b78df931aa74..ed1f8c67626b 100644 --- a/drivers/media/cec/core/cec-priv.h +++ b/drivers/media/cec/core/cec-priv.h @@ -47,6 +47,7 @@ int cec_monitor_pin_cnt_inc(struct cec_adapter *adap); void cec_monitor_pin_cnt_dec(struct cec_adapter *adap); int cec_adap_status(struct seq_file *file, void *priv); int cec_thread_func(void *_adap); +int cec_adap_enable(struct cec_adapter *adap); void __cec_s_phys_addr(struct cec_adapter *adap, u16 phys_addr, bool block); int __cec_s_log_addrs(struct cec_adapter *adap, struct cec_log_addrs *log_addrs, bool block); |