diff options
| author | Mathieu Poirier <mathieu.poirier@linaro.org> | 2016-08-25 15:19:01 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-08-31 13:05:42 +0200 |
| commit | 62d39ac934daaaecc716d651809b18da8ac255b0 (patch) | |
| tree | 5c058d830c2f36d62b0d63accedfce03d1593c4e /drivers/hwtracing | |
| parent | 67337e8d8dc44ceb720a1ba5d1f2ff230a53a888 (diff) | |
| download | linux-62d39ac934daaaecc716d651809b18da8ac255b0.tar.gz | |
coresight: delay initialisation when children are missing
Depending on when CoreSight device are discovered it is possible that some IP block may be referencing devices that have not been added to the bus yet. The end result is missing nodes in the CoreSight topology even when the devices are present and properly initialised. This patch solves the problem by asking the driver core to try initialising the device at a later time when the children of a CoreSight node are missing. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing')
| -rw-r--r-- | drivers/hwtracing/coresight/of_coresight.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hwtracing/coresight/of_coresight.c b/drivers/hwtracing/coresight/of_coresight.c index b68da1888fd5..18f1c8c4776b 100644 --- a/drivers/hwtracing/coresight/of_coresight.c +++ b/drivers/hwtracing/coresight/of_coresight.c @@ -166,7 +166,7 @@ struct coresight_platform_data *of_get_coresight_platform_data( rdev = of_coresight_get_endpoint_device(rparent); if (!rdev) - continue; + return ERR_PTR(-EPROBE_DEFER); pdata->child_names[i] = dev_name(rdev); pdata->child_ports[i] = rendpoint.id; |