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2019-02-04IB/mlx5: Advertise XRC ODP supportMoni Shoua1-0/+18
Query all per transport caps for XRC and set the appropriate bits in the per transport field of the advertised struct. Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Majd Dibbiny <majd@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-04IB/mlx5: Advertise SRQ ODP support for supported transportsMoni Shoua1-0/+6
ODP support in SRQ is per transport capability. Based on device capabilities set this flag in device structure for future queries. Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Majd Dibbiny <majd@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-04IB/mlx5: Add ODP SRQ supportMoni Shoua1-23/+61
Add changes to the WQE page-fault handler to 1. Identify that the event is for a SRQ WQE 2. Pass SRQ object instead of a QP to the function that reads the WQE 3. Parse the SRQ WQE with respect to its structure The rest is handled as for regular RQ WQE. Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Majd Dibbiny <majd@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-04IB/mlx5: Let read user wqe also from SRQ bufferMoni Shoua3-55/+166
Reading a WQE from SRQ is almost identical to reading from regular RQ. The differences are the size of the queue, the size of a WQE and buffer location. Make necessary changes to mlx5_ib_read_user_wqe() to let it read a WQE from a SRQ or RQ by caller choice. Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Majd Dibbiny <majd@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-04IB/mlx5: Add XRC initiator ODP supportMoni Shoua1-1/+5
Skip XRC segment in the beginning of a send WQE and fetch ODP XRC capabilities when QP type is IB_QPT_XRC_INI. The rest of the handling is the same as in RC QP. Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Majd Dibbiny <majd@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-04IB/mlx5: Clean mlx5_ib_mr_responder_pfault_handler() signatureMoni Shoua1-7/+7
In the function mlx5_ib_mr_responder_pfault_handler() 1. The parameter wqe is used as read-only so there is no need to pass it by reference. 2. Remove the unused argument pfault from list of arguments. Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Majd Dibbiny <majd@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-04IB/mlx5: Remove useless check in ODP handlerMoni Shoua1-7/+2
When handling an ODP event for a receive WQE in SRQ the target QP is unknown. Therefore, it is wrong to ask if QP has a SRQ in the page-fault handler. Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Majd Dibbiny <majd@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-04IB/uverbs: Expose XRC ODP device capabilitiesMoni Shoua3-0/+4
Expose XRC ODP capabilities as part of the extended device capabilities. Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Majd Dibbiny <majd@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-04IB/core: Allocate a bit for SRQ ODP supportMoni Shoua1-0/+1
The ODP support matrix is per operation and per transport. The support for each transport (RC, UD, etc.) is described with a bit field. ODP for SRQ WQEs is considered a different kind of support from ODP for RQ WQs and therefore needs a different capability bit. Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Majd Dibbiny <majd@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-04IB/mlx5: Fix the locking of SRQ objects in ODP eventsMoni Shoua4-18/+17
QP and SRQ objects are stored in different containers so the action to get and lock a common resource during ODP event needs to address that. While here get rid of 'refcount' and 'free' fields in mlx5_core_srq struct and use the fields with same semantics in common structure. Fixes: 032080ab43ac ("IB/mlx5: Lock QP during page fault handling") Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Majd Dibbiny <majd@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-03net/mlx5: Set ODP SRQ support in firmwareMoni Shoua3-0/+57
To avoid compatibility issue with older kernels the firmware doesn't allow SRQ to work with ODP unless kernel asks for it. Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Majd Dibbiny <majd@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2019-02-03net/mlx5: Add XRC transport to ODP device capabilities layoutMoni Shoua1-1/+3
The device capabilities for ODP structure was missing the field for XRC transport so add it here. Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Majd Dibbiny <majd@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2019-01-31RDMA/hns: Remove set but not used variable 'rst'YueHaibing1-2/+1
Fixes gcc '-Wunused-but-set-variable' warning: drivers/infiniband/hw/hns/hns_roce_hw_v2.c: In function 'hns_roce_v2_qp_flow_control_init': drivers/infiniband/hw/hns/hns_roce_hw_v2.c:4384:33: warning: variable 'rst' set but not used [-Wunused-but-set-variable] It never used since introduction. Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-30RDMA/core: Use the ops infrastructure to keep all callbacks in one placeLeon Romanovsky6-25/+25
As preparation to hide rdma_restrack_root, refactor the code to use the ops structure instead of a special callback which is hidden in rdma_restrack_root. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-30RDMA/restrack: Refactor user/kernel restrack additionsLeon Romanovsky1-11/+9
Since we already know if we are user/kernel before calling restrack_add, move type dependent code into the callers to make the flow more readable. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-30RDMA/core: Simplify restrack interfaceLeon Romanovsky4-28/+29
In the current implementation, we have one restrack root per-device and all users are simply providing it directly. Let's simplify the interface and have callers provide the ib_device and internally access the restrack_root. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-30RDMA/nldev: Prepare CAP_NET_ADMIN checks for .doit callbacksLeon Romanovsky1-10/+12
The .doit callbacks don't have a netlink_callback to check capabilities so in order to use the same fill_res_func for both .dump and .doit, we need to do the capability check outside of those functions. For .doit callbacks, it is possible to check CAP_NET_ADMIN directly on the received sk_buff. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-30RDMA/nldev: Factor out the PID namespace checkLeon Romanovsky1-10/+12
The PID namespace is going to be used in the .doit callback, so generalize its implementation. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-30RDMA/nldev: Dynamically generate restrack dumpit callbacksLeon Romanovsky1-28/+11
There is no need to manually write same callbacks, automatically generate them using C-macro language. This macro is going to be extended to generate doit callbacks too, so use general name for this macro. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-30IB/mlx5: Consider vlan of lower netdev for macvlan GID entriesParav Pandit1-6/+34
When a given netdev of the GID entry is macvlan netdevice, and if the lower netdevice is vlan device, GID entry for macvlan based IP address needs to inherit the vlan of the lower netdevice. Therefore, attempt to find out if the lower device exist and if so, if it is vlan device and setup the vlan tag correctly. Signed-off-by: Parav Pandit <parav@mellanox.com> Reviewed-by: Mark Bloch <markb@mellanox.com> Reviewed-by: Yuval Avnery <yuvalav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-30IB/usnic: Remove stub functionsGal Pressman3-75/+0
Lack of mandatory verbs no longer fail device registration, the device will be marked as a non-kverbs provider. Signed-off-by: Gal Pressman <galpress@amazon.com> Tested-by: Parvi Kaustubhi <pkaustub@cisco.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-30RDMA: Add indication for in kernel API support to IB deviceGal Pressman3-4/+12
Drivers that do not provide kernel verbs support should not be used by ib kernel clients at all. In case a device does not implement all mandatory verbs for kverbs usage mark it as a non kverbs provider and prevent its usage for all clients except for uverbs. The device is marked as a non kverbs provider using the 'kverbs_provider' flag which should only be set by the core code. The clients can choose whether kverbs are requested for its usage using the 'no_kverbs_req' flag which is currently set for uverbs only. This patch allows drivers to remove mandatory verbs stubs and simply set the callbacks to NULL. The IB device will be registered as a non-kverbs provider. Note that verbs that are required for the device registration process must be implemented. Signed-off-by: Gal Pressman <galpress@amazon.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-30RDMA: Provide safe ib_alloc_device() functionLeon Romanovsky19-21/+27
All callers to ib_alloc_device() provide a larger size than struct ib_device and rely on the fact that struct ib_device is embedded in their driver specific structure as the first member. Provide a safer variant of ib_alloc_device() that checks and enforces this approach to make sure the drivers are using it right. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-30IB/mlx5: Remove set but not used variableKamal Heib1-3/+1
Remove 'del_mkey' variable that is set but not used. Fixes: 534fd7aac56a ("IB/mlx5: Manage indirection mkey upon DEVX flow for ODP") Signed-off-by: Kamal Heib <kamalheib1@gmail.com> Acked-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-30IB/mlx5: Make mlx5_ib_stage_odp_cleanup() staticKamal Heib1-1/+1
The function mlx5_ib_stage_odp_cleanup() is only used in main.c Fixes: d5d284b829a6 ("{net,IB}/mlx5: Move Page fault EQ and ODP logic to RDMA") Signed-off-by: Kamal Heib <kamalheib1@gmail.com> Acked-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-30RDMA/srp: Increase max_segment_sizeBart Van Assche2-0/+14
The default behavior of the SCSI core is to set the block layer request queue parameter max_segment_size to 64 KB. That means that elements of scatterlists are limited to 64 KB. Since RDMA adapters support larger sizes, increase max_segment_size for the SRP initiator. Notes: - The SCSI max_segment_size parameter was introduced in kernel v5.0. See also commit 50c2e9107f17 ("scsi: introduce a max_segment_size host_template parameters"). - Some other block drivers already set max_segment_size to UINT_MAX, e.g. nbd and rbd. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-30IB/{hfi1, qib, rvt} Cleanup open coded sge usageMichael J. Ruhl3-70/+6
Several locations for manipulating sges use an open coded sequence that is covered by helper functions. Use the appropriate helper functions. Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2019-01-30IB/{hfi1,qib}: Cleanup open coded sge sizingMichael J. Ruhl3-30/+6
Sge sizing is done in several places using an open coded method. This can cause maintenance issues. The open coded method is encapsulated in a helper routine. The helper was introduced with commit: 1198fcea8a78 ("IB/hfi1, rdmavt: Move SGE state helper routines into rdmavt") Update all call sites that have the open coded path with the helper routine. Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2019-01-29IB/ipoib: Make ipoib_intercept_dev_id_attr() staticKamal Heib1-1/+1
The function ipoib_intercept_dev_id_attr() is only used in ipoib_main.c Fixes: f6350da41dc7 ("IB/ipoib: Log sysfs 'dev_id' accesses from userspace") Signed-off-by: Kamal Heib <kamalheib1@gmail.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-29RDMA/vmw_pvrdma: Support upto 64-bit PFNsAdit Ranadive3-7/+21
Update the driver to use the new device capability to report 64-bit UAR PFNs. Reviewed-by: Jorgen Hansen <jhansen@vmware.com> Signed-off-by: Adit Ranadive <aditr@vmware.com> Reviewed-by: Vishnu Dasa <vdasa@vmware.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-29IB/mlx5: Implement DEVX hot unplug for async command FDYishai Hadas1-2/+20
Implement DEVX hot unplug for the async command FD. This is done by managing a list of the inflight commands and wait until all launched work is completed as part of devx_hot_unplug_async_cmd_event_file. Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-29IB/mlx5: Implement the file ops of DEVX async command FDYishai Hadas1-2/+55
Implement the file ops of the DEVX async command FD, this enables using the FD for reading the events and manage other options on the FD. Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-29IB/mlx5: Introduce async DEVX obj query APIYishai Hadas3-1/+177
Introduce async DEVX obj query API to get the command response back to user space once it's ready without blocking when calling the firmware. The event's data includes a header with some meta data then the firmware output command data. The header includes: - The input 'wr_id' to let application recognizing the response. The input FD attribute is used to have the event data ready on. Downstream patches from this series will implement the file ops to let application read it. Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-29IB/mlx5: Introduce MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FDYishai Hadas5-5/+104
Introduce MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD and its initial implementation. This object is from type class FD and will be used to read DEVX async commands completion. The core layer should allow the driver to set object from type FD in a safe mode, this option was added with a matching comment in place. Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-25infiniband: prefix header search paths with $(srctree)/Masahiro Yamada7-8/+8
Currently, the Kbuild core manipulates header search paths in a crazy way [1]. To fix this mess, I want all Makefiles to add explicit $(srctree)/ to the search paths in the srctree. Some Makefiles are already written in that way, but not all. The goal of this work is to make the notation consistent, and finally get rid of the gross hacks. Having whitespaces after -I does not matter since commit 48f6e3cf5bc6 ("kbuild: do not drop -I without parameter"). [1]: https://patchwork.kernel.org/patch/9632347/ Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Parvi Kaustubhi <pkaustub@cisco.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-25infiniband: remove unneeded header search pathsMasahiro Yamada2-2/+0
The included headers are located in include/target/. I was able to build these drivers without the extra header search paths. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-24IB/core: Destroy QP if XRC QP failsYuval Avnery1-17/+24
The open-coded variant missed destroy of SELinux created QP, reuse already existing ib_detroy_qp() call and use this opportunity to clean ib_create_qp() from double prints and unclear exit paths. Reported-by: Parav Pandit <parav@mellanox.com> Fixes: d291f1a65232 ("IB/core: Enforce PKey security on QPs") Signed-off-by: Yuval Avnery <yuvalav@mellanox.com> Reviewed-by: Parav Pandit <parav@mellanox.com> Reviewed-by: Daniel Jurgens <danielj@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-24RDMA/qib: Use GUP longterm for PSM page piningIra Weiny1-4/+4
Similar to the core change commit 5f1d43de5416 ("IB/core: disable memory registration of filesystem-dax vmas") PSM should be prevented from using filesystem DAX pages. Signed-off-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-24RDMA/hns: Add timer allocation support for hip08Yangyang Li7-2/+227
This patch adds qpc timer and cqc timer allocation support for hardware timeout retransmission in kernel space driver. Signed-off-by: Yangyang Li <liyangyang20@huawei.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-24RDMA/hns: Add SCC context clr support for hip08Yangyang Li4-1/+85
This patch adds SCC context clear support for DCQCN in kernel space driver. Signed-off-by: Yangyang Li <liyangyang20@huawei.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-24RDMA/hns: Add SCC context allocation support for hip08Yangyang Li8-8/+146
This patch adds SCC context allocation and initialization support for DCQCN in kernel space driver. Signed-off-by: Yangyang Li <liyangyang20@huawei.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-24IB/mlx5: Remove dead codeMoni Shoua1-6/+0
When CONFIG_INFINIBAND_ON_DEMAND_PAGING is not set there is no caller to ib_alloc_odp_umem() so let's remove it. Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Artemy Kovalyov <artemyko@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-24IB/mlx5: Ranges in implicit ODP MR inherit its write accessMoni Shoua3-4/+5
A sub-range in ODP implicit MR should take its write permission from the MR and not be set always to allow. Fixes: d07d1d70ce1a ("IB/umem: Update on demand page (ODP) support") Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Artemy Kovalyov <artemyko@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-24RDMA/iw_cxgb4: Drop __GFP_NOFAILJason Gunthorpe1-1/+1
There is no reason for this __GFP_NOFAIL, none of the other routines in this file use it, and there is an error unwind here. NOFAIL should be reserved for special cases, not used by network drivers. Fixes: 6a0b6174d35a ("rdma/cxgb4: Add support for kernel mode SRQ's") Reported-by: Nicholas Mc Guire <hofrat@osadl.org> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-24IB/mlx5: Declare local functions 'static'Bart Van Assche1-1/+1
This patch avoids that sparse complains about missing function declarations. Fixes: c9990ab39b6e ("RDMA/umem: Move all the ODP related stuff out of ucontext and into per_mm") Signed-off-by: Bart Van Assche <bvanassche@acm.org> Acked-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-24IB/core: Declare local functions 'static'Bart Van Assche1-1/+1
This patch avoids that sparse complains about missing function declarations. Fixes: f27a0d50a4bc ("RDMA/umem: Use umem->owning_mm inside ODP") Signed-off-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-24infiniband: ipoib: no need to check return value of debugfs_create functionsGreg Kroah-Hartman3-11/+4
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-24infiniband: usnic: no need to check return value of debugfs_create functionsGreg Kroah-Hartman1-26/+0
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Parvi Kaustubhi <pkaustub@cisco.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-24infiniband: ocrdma: no need to check return value of debugfs_create functionsGreg Kroah-Hartman1-45/+22
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-24infiniband: mlx5: no need to check return value of debugfs_create functionsGreg Kroah-Hartman4-64/+19
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
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