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    Subject[134/146] atm: expose ATM device index in sysfs
    2.6.38-stable review patch.  If anyone has any objections, please let us know.

    ------------------

    From: Dan Williams <dcbw@redhat.com>

    commit e7a46b4d0839c2a3aa2e0ae0b145f293f6738498 upstream.

    It's currently exposed only through /proc which, besides requiring
    screen-scraping, doesn't allow userspace to distinguish between two
    identical ATM adapters with different ATM indexes. The ATM device index
    is required when using PPPoATM on a system with multiple ATM adapters.

    Signed-off-by: Dan Williams <dcbw@redhat.com>
    Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com>
    Tested-by: David Woodhouse <dwmw2@infradead.org>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

    ---
    net/atm/atm_sysfs.c | 10 ++++++++++
    1 file changed, 10 insertions(+)

    --- a/net/atm/atm_sysfs.c
    +++ b/net/atm/atm_sysfs.c
    @@ -59,6 +59,14 @@ static ssize_t show_atmaddress(struct de
    return pos - buf;
    }

    +static ssize_t show_atmindex(struct device *cdev,
    + struct device_attribute *attr, char *buf)
    +{
    + struct atm_dev *adev = to_atm_dev(cdev);
    +
    + return sprintf(buf, "%d\n", adev->number);
    +}
    +
    static ssize_t show_carrier(struct device *cdev,
    struct device_attribute *attr, char *buf)
    {
    @@ -99,6 +107,7 @@ static ssize_t show_link_rate(struct dev

    static DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
    static DEVICE_ATTR(atmaddress, S_IRUGO, show_atmaddress, NULL);
    +static DEVICE_ATTR(atmindex, S_IRUGO, show_atmindex, NULL);
    static DEVICE_ATTR(carrier, S_IRUGO, show_carrier, NULL);
    static DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
    static DEVICE_ATTR(link_rate, S_IRUGO, show_link_rate, NULL);
    @@ -106,6 +115,7 @@ static DEVICE_ATTR(link_rate, S_IRUGO, s
    static struct device_attribute *atm_attrs[] = {
    &dev_attr_atmaddress,
    &dev_attr_address,
    + &dev_attr_atmindex,
    &dev_attr_carrier,
    &dev_attr_type,
    &dev_attr_link_rate,



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