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net: gianfar: correctly determine the number of queue groups 

eTSEC of-nodes may have children which are not queue-group nodes. For
example new-style fixed-phy declarations. These where incorrectly
assumed to be additional queue-groups.

Change the search to filter out any nodes which are not queue-groups,
or have been disabled.

Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tobias Waldekranz 2015-03-05 14:48:23 +01:00 committed by David S. Miller
parent 9d73b42bbf
commit f50724cdfe
1 changed files with 17 additions and 2 deletions
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19
drivers/net/ethernet/freescale/gianfar.c
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@ -747,6 +747,18 @@ static int gfar_parse_group(struct device_node *np,
return 0; return 0;
} }
static int gfar_of_group_count(struct device_node *np)
{
struct device_node *child;
int num = 0;
for_each_available_child_of_node(np, child)
if (!of_node_cmp(child->name, "queue-group"))
num++;
return num;
}
static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev) static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev)
{ {
const char *model; const char *model;
@ -784,7 +796,7 @@ static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev)
num_rx_qs = 1; num_rx_qs = 1;
} else { /* MQ_MG_MODE */ } else { /* MQ_MG_MODE */
/* get the actual number of supported groups */ /* get the actual number of supported groups */
unsigned int num_grps = of_get_available_child_count(np); unsigned int num_grps = gfar_of_group_count(np);
if (num_grps == 0 || num_grps > MAXGROUPS) { if (num_grps == 0 || num_grps > MAXGROUPS) {
dev_err(&ofdev->dev, "Invalid # of int groups(%d)\n", dev_err(&ofdev->dev, "Invalid # of int groups(%d)\n",
@ -851,7 +863,10 @@ static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev)
/* Parse and initialize group specific information */ /* Parse and initialize group specific information */
if (priv->mode == MQ_MG_MODE) { if (priv->mode == MQ_MG_MODE) {
for_each_child_of_node(np, child) { for_each_available_child_of_node(np, child) {
if (of_node_cmp(child->name, "queue-group"))
continue;
err = gfar_parse_group(child, priv, model); err = gfar_parse_group(child, priv, model);
if (err) if (err)
goto err_grp_init; goto err_grp_init;