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| author | Jason Gunthorpe <jgg@mellanox.com> | 2019-01-29 13:49:31 -0700 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2019-01-29 13:49:31 -0700 |
| commit | 55c293c38efa4408920e3ff8135a85a0dc2e3f56 (patch) | |
| tree | 7933e8bd5f163545eaa497c5b659052a6edf30e1 /fs/sysfs/file.c | |
| parent | b360ce3b2be9fb93d7ba7ecdcb4eb16d7e469998 (diff) | |
| parent | eaebaf77e7cb22fc371b7843370c903f1dd0fc3d (diff) | |
Merge branch 'devx-async' into k.o/for-next
Yishai Hadas says:
Enable DEVX asynchronous query commands
This series enables querying a DEVX object in an asynchronous mode.
The userspace application won't block when calling the firmware and it will be
able to get the response back once that it will be ready.
To enable the above functionality:
- DEVX asynchronous command completion FD object was introduced.
- The applicable file operations were implemented to enable using it by
the user application.
- Query asynchronous method was added to the DEVX object, it will call the
firmware asynchronously and manages the response on the given input FD.
- Hot unplug support was added for the FD to work properly upon
unbind/disassociate.
- mlx5 core fence for asynchronous commands was implemented and used to
prevent racing upon unbind/disassociate.
This branch is based on mlx5-next & v5.0-rc2 due to dependencies, from
git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux
* branch 'devx-async':
IB/mlx5: Implement DEVX hot unplug for async command FD
IB/mlx5: Implement the file ops of DEVX async command FD
IB/mlx5: Introduce async DEVX obj query API
IB/mlx5: Introduce MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'fs/sysfs/file.c')
| -rw-r--r-- | fs/sysfs/file.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c index bb71db63c99c..51398457fe00 100644 --- a/fs/sysfs/file.c +++ b/fs/sysfs/file.c @@ -325,7 +325,8 @@ int sysfs_create_file_ns(struct kobject *kobj, const struct attribute *attr, kuid_t uid; kgid_t gid; - BUG_ON(!kobj || !kobj->sd || !attr); + if (WARN_ON(!kobj || !kobj->sd || !attr)) + return -EINVAL; kobject_get_ownership(kobj, &uid, &gid); return sysfs_add_file_mode_ns(kobj->sd, attr, false, attr->mode, @@ -537,7 +538,8 @@ int sysfs_create_bin_file(struct kobject *kobj, kuid_t uid; kgid_t gid; - BUG_ON(!kobj || !kobj->sd || !attr); + if (WARN_ON(!kobj || !kobj->sd || !attr)) + return -EINVAL; kobject_get_ownership(kobj, &uid, &gid); return sysfs_add_file_mode_ns(kobj->sd, &attr->attr, true, |