netdev - [PATCH net-next 16/36] can: mcp251xfd: mcp251xfd_unregister(): simplify runtime PM handling

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Date:   Wed, 23 Feb 2022 23:43:12 +0100
From:   Marc Kleine-Budde <mkl@...gutronix.de>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, linux-can@...r.kernel.org,
        kernel@...gutronix.de, Marc Kleine-Budde <mkl@...gutronix.de>
Subject: [PATCH net-next 16/36] can: mcp251xfd: mcp251xfd_unregister(): simplify runtime PM handling

The mcp251xfd driver supports runtime PM enabled kernels, but also
works on !CONFIG_PM configurations.

This patch simplifies the runtime PM handling in the
mcp251xfd_unregister(). In the CONFIG_PM case, runtime PM has been
enabled in the mcp251xfd_probe() function, so we can disable it here.
For !CONFIG_PM builds call mcp251xfd_clks_and_vdd_disable() directly.

Link: https://lore.kernel.org/all/20220207131047.282110-4-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
---
 drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
index 7e0c4e662381..49ce5ff34903 100644
--- a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
+++ b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
@@ -1768,10 +1768,10 @@ static inline void mcp251xfd_unregister(struct mcp251xfd_priv *priv)
 
 	unregister_candev(ndev);
 
-	pm_runtime_get_sync(ndev->dev.parent);
-	pm_runtime_put_noidle(ndev->dev.parent);
-	mcp251xfd_clks_and_vdd_disable(priv);
-	pm_runtime_disable(ndev->dev.parent);
+	if (pm_runtime_enabled(ndev->dev.parent))
+		pm_runtime_disable(ndev->dev.parent);
+	else
+		mcp251xfd_clks_and_vdd_disable(priv);
 }
 
 static const struct of_device_id mcp251xfd_of_match[] = {
-- 
2.34.1