ibcore: 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. Linux commit: 79c4d80b43b8e43684894574a508a871f0c196bf MFC after: 1 week Reviewed by: kib Sponsored by: Mellanox Technologies // NVIDIA Networking
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@ -114,8 +114,22 @@ static ssize_t port_attr_show(struct kobject *kobj,
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return port_attr->show(p, port_attr, buf);
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}
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static ssize_t port_attr_store(struct kobject *kobj,
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struct attribute *attr,
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const char *buf, size_t count)
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{
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struct port_attribute *port_attr =
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container_of(attr, struct port_attribute, attr);
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struct ib_port *p = container_of(kobj, struct ib_port, kobj);
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if (!port_attr->store)
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return -EIO;
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return port_attr->store(p, port_attr, buf, count);
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}
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static const struct sysfs_ops port_sysfs_ops = {
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.show = port_attr_show
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.show = port_attr_show,
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.store = port_attr_store
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};
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static ssize_t gid_attr_show(struct kobject *kobj,
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