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net: macb: fix call to pm_runtime in the suspend/resume functions

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[ Upstream commit 6c8f85cac98a4c6b767c4c4f6af7283724c32b47 ]

The calls to pm_runtime_force_suspend/resume() functions are only
relevant if the device is not configured to act as a WoL wakeup source.
Add the device_may_wakeup() test before calling them.

Fixes: 3e2a5e1539 ("net: macb: add wake-on-lan support via magic packet")
Cc: Claudiu Beznea <claudiu.beznea@microchip.com>
Cc: Harini Katakam <harini.katakam@xilinx.com>
Cc: Sergio Prado <sergio.prado@e-labworks.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Nicolas Ferre 2020-07-10 14:46:45 +02:00 • committed by Greg Kroah-Hartman
commit f62f896a56
1 changed files with 4 additions and 2 deletions
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6
drivers/net/ethernet/cadence/macb_main.c
View file

@ -4453,7 +4453,8 @@ static int __maybe_unused macb_suspend(struct device *dev)
netif_carrier_off(netdev);
if (bp->ptp_info)
bp->ptp_info->ptp_remove(netdev);
pm_runtime_force_suspend(dev);
if (!device_may_wakeup(dev))
pm_runtime_force_suspend(dev);
return 0;
}
@ -4468,7 +4469,8 @@ static int __maybe_unused macb_resume(struct device *dev)
if (!netif_running(netdev))
return 0;
pm_runtime_force_resume(dev);
if (!device_may_wakeup(dev))
pm_runtime_force_resume(dev);
if (bp->wol & MACB_WOL_ENABLED) {
macb_writel(bp, IDR, MACB_BIT(WOL));