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Subject[char-misc-next 06/15 V3] mei: bus: report if event registration failed
Date
If event registeration has failed, the caller should know
about it.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
V2: fix the commit message
V3: rebase
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 257e200b5343..aba7688d1ddd 100644
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -256,6 +256,8 @@ 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;

@@ -264,7 +266,9 @@ 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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