diff options
Diffstat (limited to 'drivers/rpmsg')
| -rw-r--r-- | drivers/rpmsg/qcom_smd.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c index ed167ab52a68..10870189c0c8 100644 --- a/drivers/rpmsg/qcom_smd.c +++ b/drivers/rpmsg/qcom_smd.c @@ -752,12 +752,19 @@ static int __qcom_smd_send(struct qcom_smd_channel *channel, const void *data, SET_TX_CHANNEL_FLAG(channel, fBLOCKREADINTR, 0); + /* Wait without holding the tx_lock */ + mutex_unlock(&channel->tx_lock); + ret = wait_event_interruptible(channel->fblockread_event, qcom_smd_get_tx_avail(channel) >= tlen || channel->state != SMD_CHANNEL_OPENED); if (ret) goto out; + ret = mutex_lock_interruptible(&channel->tx_lock); + if (ret) + goto out; + SET_TX_CHANNEL_FLAG(channel, fBLOCKREADINTR, 1); } |