mei: don't get stuck in select during reset
Clear pending connection after hw reset but before hw start
and wake up the waiting task in poll. Signal POLLERR in select
when device went through reset.
Add wrapper mei_cl_is_connected for checking if
the device and client are connected.
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c
index 7929e14..557eed2 100644
--- a/drivers/misc/mei/init.c
+++ b/drivers/misc/mei/init.c
@@ -149,12 +149,20 @@
dev->hbm_state = MEI_HBM_IDLE;
if (dev->dev_state != MEI_DEV_INITIALIZING) {
+
if (dev->dev_state != MEI_DEV_DISABLED &&
dev->dev_state != MEI_DEV_POWER_DOWN)
dev->dev_state = MEI_DEV_RESETTING;
+
+ /* remove all waiting requests */
+ mei_cl_all_write_clear(dev);
+
mei_cl_all_disconnect(dev);
+ /* wake up all readings so they can be interrupted */
+ mei_cl_all_wakeup(dev);
+
/* remove entry if already in list */
dev_dbg(&dev->pdev->dev, "remove iamthif and wd from the file list.\n");
mei_cl_unlink(&dev->wd_cl);
@@ -195,11 +203,6 @@
mei_hbm_start_req(dev);
- /* wake up all readings so they can be interrupted */
- mei_cl_all_wakeup(dev);
-
- /* remove all waiting requests */
- mei_cl_all_write_clear(dev);
}
EXPORT_SYMBOL_GPL(mei_reset);