diff options
| author | Dave Airlie <airlied@redhat.com> | 2020-07-24 08:28:09 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2020-07-24 08:48:05 +1000 |
| commit | 41206a073ceebc517245677a19f52ba6379b33a9 (patch) | |
| tree | 2fc35aac6abe32b99058ad55b0fc6e4d449d1056 /drivers/hwtracing/intel_th/core.c | |
| parent | 206739119508d5ab4b42ab480ff61a7e6cd72d7c (diff) | |
| parent | ba47d845d715a010f7b51f6f89bae32845e6acb7 (diff) | |
Merge v5.8-rc6 into drm-next
I've got a silent conflict + two trees based on fixes to merge.
Fixes a silent merge with amdgpu
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/hwtracing/intel_th/core.c')
| -rw-r--r-- | drivers/hwtracing/intel_th/core.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/drivers/hwtracing/intel_th/core.c b/drivers/hwtracing/intel_th/core.c index ca232ec565e8..c9ac3dc65113 100644 --- a/drivers/hwtracing/intel_th/core.c +++ b/drivers/hwtracing/intel_th/core.c @@ -1021,15 +1021,30 @@ int intel_th_set_output(struct intel_th_device *thdev, { struct intel_th_device *hub = to_intel_th_hub(thdev); struct intel_th_driver *hubdrv = to_intel_th_driver(hub->dev.driver); + int ret; /* In host mode, this is up to the external debugger, do nothing. */ if (hub->host_mode) return 0; - if (!hubdrv->set_output) - return -ENOTSUPP; + /* + * hub is instantiated together with the source device that + * calls here, so guaranteed to be present. + */ + hubdrv = to_intel_th_driver(hub->dev.driver); + if (!hubdrv || !try_module_get(hubdrv->driver.owner)) + return -EINVAL; + + if (!hubdrv->set_output) { + ret = -ENOTSUPP; + goto out; + } + + ret = hubdrv->set_output(hub, master); - return hubdrv->set_output(hub, master); +out: + module_put(hubdrv->driver.owner); + return ret; } EXPORT_SYMBOL_GPL(intel_th_set_output); |