diff options
| author | Tomas Winkler <tomas.winkler@intel.com> | 2015-07-23 15:08:38 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-08-03 17:21:58 -0700 |
| commit | 48168f4561f479403dbd38379dc8793488a22a6a (patch) | |
| tree | 45c845a16aecb716b3bfcd3b734adf3c32595f41 /drivers/misc/mei | |
| parent | 7e280ab694e2885ee300de9cf5e7047c68230148 (diff) | |
| download | linux-48168f4561f479403dbd38379dc8793488a22a6a.tar.gz linux-48168f4561f479403dbd38379dc8793488a22a6a.tar.bz2 linux-48168f4561f479403dbd38379dc8793488a22a6a.zip | |
mei: bus: report if event registration failed
If event registeration has failed, the caller should know
about it.
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei')
| -rw-r--r-- | drivers/misc/mei/bus.c | 6 |
1 files changed, 5 insertions, 1 deletions
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; } |