6.5-stable review patch. If anyone has any objections, please let me know.
------------------
From: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
[ Upstream commit 948a77aaecf202f722cf2264025f9987e5bd5c26 ]
The adap_configured() callback was called with the adap->lock mutex
held if the 'configured' argument was false, and without the adap->lock
mutex held if that argument was true.
That was very confusing, and so split this up in a adap_unconfigured()
callback and a high-level configured() callback.
This also makes it easier to understand when the mutex is held: all
low-level adap_* callbacks are called with the mutex held. All other
callbacks are called without that mutex held.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
Fixes: f1b57164305d ("media: cec: add optional adap_configured callback")
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/media/cec/core/cec-adap.c | 4 ++--
include/media/cec.h | 5 +++--
2 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/media/cec/core/cec-adap.c b/drivers/media/cec/core/cec-adap.c
index a9b73fb33888d..09ca83c233299 100644
--- a/drivers/media/cec/core/cec-adap.c
+++ b/drivers/media/cec/core/cec-adap.c
@@ -1348,7 +1348,7 @@ static void cec_adap_unconfigure(struct cec_adapter *adap)
cec_flush(adap);
wake_up_interruptible(&adap->kthread_waitq);
cec_post_state_event(adap);
- call_void_op(adap, adap_configured, false);
+ call_void_op(adap, adap_unconfigured);
}
/*
@@ -1539,7 +1539,7 @@ static int cec_config_thread_func(void *arg)
adap->kthread_config = NULL;
complete(&adap->config_completion);
mutex_unlock(&adap->lock);
- call_void_op(adap, adap_configured, true);
+ call_void_op(adap, configured);
return 0;
unconfigure:
diff --git a/include/media/cec.h b/include/media/cec.h
index 6556cc161dc0a..9c007f83569aa 100644
--- a/include/media/cec.h
+++ b/include/media/cec.h
@@ -113,12 +113,12 @@ struct cec_fh {
#define CEC_FREE_TIME_TO_USEC(ft) ((ft) * 2400)
struct cec_adap_ops {
- /* Low-level callbacks */
+ /* Low-level callbacks, called with adap->lock held */
int (*adap_enable)(struct cec_adapter *adap, bool enable);
int (*adap_monitor_all_enable)(struct cec_adapter *adap, bool enable);
int (*adap_monitor_pin_enable)(struct cec_adapter *adap, bool enable);
int (*adap_log_addr)(struct cec_adapter *adap, u8 logical_addr);
- void (*adap_configured)(struct cec_adapter *adap, bool configured);
+ void (*adap_unconfigured)(struct cec_adapter *adap);
int (*adap_transmit)(struct cec_adapter *adap, u8 attempts,
u32 signal_free_time, struct cec_msg *msg);
void (*adap_nb_transmit_canceled)(struct cec_adapter *adap,
@@ -131,6 +131,7 @@ struct cec_adap_ops {
bool (*error_inj_parse_line)(struct cec_adapter *adap, char *line);
/* High-level CEC message callback, called without adap->lock held */
+ void (*configured)(struct cec_adapter *adap);
int (*received)(struct cec_adapter *adap, struct cec_msg *msg);
};
--
2.40.1
