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mei: amthif: interrupt reader on link reset 

In case of link reset all waiting readers should be interrupted.

Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexander Usyskin 2016-02-07 23:35:29 +02:00 committed by Greg Kroah-Hartman
parent 4bddf56fc9
commit b74d883138
1 changed files with 7 additions and 1 deletions
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8
drivers/misc/mei/amthif.c
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@ -122,7 +122,8 @@ int mei_amthif_read(struct mei_device *dev, struct file *file,
mutex_unlock(&dev->device_lock); mutex_unlock(&dev->device_lock);
wait_ret = wait_event_interruptible(cl->rx_wait, wait_ret = wait_event_interruptible(cl->rx_wait,
!list_empty(&cl->rd_completed)); !list_empty(&cl->rd_completed) ||
!mei_cl_is_connected(cl));
/* Locking again the Mutex */ /* Locking again the Mutex */
mutex_lock(&dev->device_lock); mutex_lock(&dev->device_lock);
@ -130,6 +131,11 @@ int mei_amthif_read(struct mei_device *dev, struct file *file,
if (wait_ret) if (wait_ret)
return -ERESTARTSYS; return -ERESTARTSYS;
if (!mei_cl_is_connected(cl)) {
rets = -EBUSY;
goto out;
}
cb = mei_cl_read_cb(cl, file); cb = mei_cl_read_cb(cl, file);
} }