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net: bcmgenet: Don't claim WOL when its not available

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[ Upstream commit 00b022f8f876a3a036b0df7f971001bef6398605 ]

Some of the bcmgenet platforms don't correctly support WOL, yet
ethtool returns:

"Supports Wake-on: gsf"

which is false.

Ideally if there isn't a wol_irq, or there is something else that
keeps the device from being able to wakeup it should display:

"Supports Wake-on: d"

This patch checks whether the device can wakup, before using the
hard-coded supported flags. This corrects the ethtool reporting, as
well as the WOL configuration because ethtool verifies that the mode
is supported before attempting it.

Fixes: c51de7f397 ("net: bcmgenet: add Wake-on-LAN support code")
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20220310045535.224450-1-jeremy.linton@arm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jeremy Linton 2022-03-09 22:55:35 -06:00 committed by Greg Kroah-Hartman
parent bbf59d7ae5
commit e0eca9285c
1 changed files with 7 additions and 0 deletions
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7
drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c
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@ -41,6 +41,13 @@
void bcmgenet_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
struct bcmgenet_priv *priv = netdev_priv(dev);
struct device *kdev = &priv->pdev->dev;
if (!device_can_wakeup(kdev)) {
wol->supported = 0;
wol->wolopts = 0;
return;
}
wol->supported = WAKE_MAGIC | WAKE_MAGICSECURE;
wol->wolopts = priv->wolopts;