diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c index 6d0282c08a06cdbe6233a379ee575882b1d7a525..cd2033cd7120d7631fa8d345409ed9ea86259799 100644 --- a/drivers/misc/mei/bus.c +++ b/drivers/misc/mei/bus.c @@ -297,10 +297,13 @@ int __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length) if (cl->reading_state != MEI_READ_COMPLETE && !waitqueue_active(&cl->rx_wait)) { + mutex_unlock(&dev->device_lock); if (wait_event_interruptible(cl->rx_wait, - (MEI_READ_COMPLETE == cl->reading_state))) { + cl->reading_state == MEI_READ_COMPLETE || + mei_cl_is_transitioning(cl))) { + if (signal_pending(current)) return -EINTR; return -ERESTARTSYS; diff --git a/drivers/misc/mei/client.h b/drivers/misc/mei/client.h index 9eb031e920701e8ad8feadf3bec2900b182e4a5c..892cc4207fa202629e27698c0ae536f0b81880b0 100644 --- a/drivers/misc/mei/client.h +++ b/drivers/misc/mei/client.h @@ -90,6 +90,12 @@ static inline bool mei_cl_is_connected(struct mei_cl *cl) cl->dev->dev_state == MEI_DEV_ENABLED && cl->state == MEI_FILE_CONNECTED); } +static inline bool mei_cl_is_transitioning(struct mei_cl *cl) +{ + return (MEI_FILE_INITIALIZING == cl->state || + MEI_FILE_DISCONNECTED == cl->state || + MEI_FILE_DISCONNECTING == cl->state); +} bool mei_cl_is_other_connecting(struct mei_cl *cl); int mei_cl_disconnect(struct mei_cl *cl); diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c index 173ff095be0dd6747145c9653726b3e00f85cd81..cabeddd66c1f406f73f7e5bed2a56b7e52cd7621 100644 --- a/drivers/misc/mei/main.c +++ b/drivers/misc/mei/main.c @@ -249,19 +249,16 @@ static ssize_t mei_read(struct file *file, char __user *ubuf, mutex_unlock(&dev->device_lock); if (wait_event_interruptible(cl->rx_wait, - (MEI_READ_COMPLETE == cl->reading_state || - MEI_FILE_INITIALIZING == cl->state || - MEI_FILE_DISCONNECTED == cl->state || - MEI_FILE_DISCONNECTING == cl->state))) { + MEI_READ_COMPLETE == cl->reading_state || + mei_cl_is_transitioning(cl))) { + if (signal_pending(current)) return -EINTR; return -ERESTARTSYS; } mutex_lock(&dev->device_lock); - if (MEI_FILE_INITIALIZING == cl->state || - MEI_FILE_DISCONNECTED == cl->state || - MEI_FILE_DISCONNECTING == cl->state) { + if (mei_cl_is_transitioning(cl)) { rets = -EBUSY; goto out; }