When gb_audio_apbridgea_register_cport failed, maybe:
1) gb_pm_runtime_get_sync failed, usage counter remained unchanged;
2) gb_hd_output failed, usage counter remained increased;
In error state, there are two different states in usage cpounter. So,
if gb_hd_output failed, we should call gb_pm_runtime_put_autosuspend
ot decrease usage counter for balabce preventing reference leak. And
we fixed it by add gb_pm_runtime_put_autosuspend when gb_hd_output
failed.
Fixes: 6ba7fad430d63 ("Add runtime pm support to audio protocol device class driver.")
Signed-off-by: Zhang Qilong <zhangqilong3@xxxxxxxxxx>
---
drivers/staging/greybus/audio_apbridgea.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/staging/greybus/audio_apbridgea.c b/drivers/staging/greybus/audio_apbridgea.c
index 26117e390deb..50545fd9756c 100644
--- a/drivers/staging/greybus/audio_apbridgea.c
+++ b/drivers/staging/greybus/audio_apbridgea.c
@@ -42,8 +42,12 @@ int gb_audio_apbridgea_register_cport(struct gb_connection *connection,
if (ret)
return ret;
- return gb_hd_output(connection->hd, &req, sizeof(req),
+ ret = gb_hd_output(connection->hd, &req, sizeof(req),
GB_APB_REQUEST_AUDIO_CONTROL, true);
+ if (ret)
+ gb_pm_runtime_put_autosuspend(connection->bundle);
+
+ return ret;
}
EXPORT_SYMBOL_GPL(gb_audio_apbridgea_register_cport);
--
2.25.4
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