[PATCH 5.10 161/199] sh_eth: Fix power down vs. is_opened flag ordering

Greg Kroah-Hartman
2021-01-26T01:55:27Z

From: Geert Uytterhoeven <geert+renesas@glider.be>

commit f6a2e94b3f9d89cb40771ff746b16b5687650cbb upstream.

sh_eth_close() does a synchronous power down of the device before
marking it closed. Revert the order, to make sure the device is never
marked opened while suspended.

While at it, use pm_runtime_put() instead of pm_runtime_put_sync(), as
there is no reason to do a synchronous power down.

Fixes: 7fa2955ff70ce453 ("sh_eth: Fix sleeping function called from invalid context")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Sergei Shtylyov <sergei.shtylyov@gmail.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/20210118150812.796791-1-geert+renesas@glider.be
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/net/ethernet/renesas/sh_eth.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/net/ethernet/renesas/sh_eth.c
+++ b/drivers/net/ethernet/renesas/sh_eth.c
@@ -2606,10 +2606,10 @@ static int sh_eth_close(struct net_devic
/* Free all the skbuffs in the Rx queue and the DMA buffer. */
sh_eth_ring_free(ndev);

- pm_runtime_put_sync(&mdp->pdev->dev);
-
mdp->is_opened = 0;

+ pm_runtime_put(&mdp->pdev->dev);
+
return 0;
}