If event registeration has failed, the caller should know
about it.
Signed-off-by: Tomas Winkler <tomas.wink...@intel.com>
---
V2: fix the commit message
drivers/misc/mei/bus.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index 3756f4687292..e32913289c87 100644
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -255,6 +255,8 @@ void mei_cl_bus_rx_event(struct mei_cl *cl)
int mei_cl_register_event_cb(struct mei_cl_device *cldev,
mei_cl_event_cb_t event_cb, void *context)
{
+ int ret;
+
if (cldev->event_cb)
return -EALREADY;
@@ -263,7 +265,9 @@ int mei_cl_register_event_cb(struct mei_cl_device *cldev,
cldev->event_context = context;
INIT_WORK(&cldev->event_work, mei_bus_event_work);
- mei_cl_read_start(cldev->cl, 0, NULL);
+ ret = mei_cl_read_start(cldev->cl, 0, NULL);
+ if (ret && ret != -EBUSY)
+ return ret;
return 0;
}
--
2.4.3
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