linux-kernel - Re: [PATCH 5/5] kernel handling of CPU DLPAR

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Date:	Tue, 15 Sep 2009 09:48:50 -0500
From:	Brian King <brking@...ux.vnet.ibm.com>
To:	Nathan Fontenot <nfont@...tin.ibm.com>
CC:	linuxppc-dev@...abs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/5] kernel handling of CPU DLPAR

Nathan Fontenot wrote:
> +static ssize_t cpu_probe_store(struct class *class, const char *buf,
> +                   size_t count)
> +{
> +    struct device_node *dn;
> +    u32 drc_index;
> +    char *cpu_name;
> +    int rc;
> +
> +    drc_index = simple_strtoull(buf, NULL, 0);

Can just use simple_strtoul here instead.

> +    if (!drc_index)
> +        return -EINVAL;
> +
> +    rc = acquire_drc(drc_index);
> +    if (rc)
> +        return rc;
> +
> +    dn = configure_connector(drc_index);
> +    if (!dn) {
> +        release_drc(drc_index);
> +        return rc;
> +    }
> +
> +    /* fixup dn name */
> +    cpu_name = kzalloc(strlen(dn->full_name) + strlen("/cpus/") + 1,
> +               GFP_KERNEL);
> +    sprintf(cpu_name, "/cpus/%s", dn->full_name);
> +    kfree(dn->full_name);
> +    dn->full_name = cpu_name;
> +
> +    rc = add_device_tree_nodes(dn);
> +    if (rc)
> +        release_drc(drc_index);
> +
> +    return rc ? rc : count;
> +}
> +


-- 
Brian King
Linux on Power Virtualization
IBM Linux Technology Center


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