diff options
| author | Parav Pandit <parav@mellanox.com> | 2017-10-16 08:45:14 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-10-18 12:10:36 -0400 |
| commit | 79c4d80b43b8e43684894574a508a871f0c196bf (patch) | |
| tree | a55176331009b6ab29c3834c74b8bbdcc8c98fcd /drivers/infiniband/core | |
| parent | c0348eb069687a2f27c0cd23dafb35918edf9e75 (diff) | |
IB/core: Fix unable to change lifespan entry for hw_counters
This patch fixes the case where 'lifespan' entry of the hw_counters
is not writable. Currently write callback is not exposed for for
the hw_counters sysfs operation. Due to this, modifying lifespan
value results into permission denied error in below example.
echo 10 > /sys/class/infiniband/mlx5_0/ports/1/hw_counters/lifespan
-bash: /sys/class/infiniband/mlx5_0/ports/1/hw_counters/lifespan:
Permission denied
This patch adds the hook to modify any attribute which implements
store() operation.
Fixes: b40f4757daa1 ("IB/core: Make device counter infrastructure dynamic")
Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/core')
| -rw-r--r-- | drivers/infiniband/core/sysfs.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c index abc5ab581f82..e30d86fa1855 100644 --- a/drivers/infiniband/core/sysfs.c +++ b/drivers/infiniband/core/sysfs.c @@ -108,8 +108,22 @@ static ssize_t port_attr_show(struct kobject *kobj, return port_attr->show(p, port_attr, buf); } +static ssize_t port_attr_store(struct kobject *kobj, + struct attribute *attr, + const char *buf, size_t count) +{ + struct port_attribute *port_attr = + container_of(attr, struct port_attribute, attr); + struct ib_port *p = container_of(kobj, struct ib_port, kobj); + + if (!port_attr->store) + return -EIO; + return port_attr->store(p, port_attr, buf, count); +} + static const struct sysfs_ops port_sysfs_ops = { - .show = port_attr_show + .show = port_attr_show, + .store = port_attr_store }; static ssize_t gid_attr_show(struct kobject *kobj, |