linux-kernel - [PATCH 2/6] net: ravb: Use pm_runtime_resume_and

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Message-Id: <20231127090426.3761729-3-claudiu.beznea.uj@bp.renesas.com>
Date:   Mon, 27 Nov 2023 11:04:22 +0200
From:   Claudiu <claudiu.beznea@...on.dev>
To:     s.shtylyov@....ru, davem@...emloft.net, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com, richardcochran@...il.com,
        p.zabel@...gutronix.de, yoshihiro.shimoda.uh@...esas.com,
        geert+renesas@...der.be, wsa+renesas@...g-engineering.com,
        robh@...nel.org, biju.das.jz@...renesas.com,
        prabhakar.mahadev-lad.rj@...renesas.com,
        mitsuhiro.kimura.kc@...esas.com, masaru.nagai.vx@...esas.com
Cc:     netdev@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
Subject: [PATCH 2/6] net: ravb: Use pm_runtime_resume_and_get()

From: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>

pm_runtime_get_sync() may return an error. In case it returns with an error
dev->power.usage_count needs to be decremented. pm_runtime_resume_and_get()
takes care of this. Thus use it.

Fixes: c156633f1353 ("Renesas Ethernet AVB driver proper")
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
---

Changes since [1]:
- added goto label for pm_runtime_disable(); with this innecessary
  changes were removed

[1] https://lore.kernel.org/all/20231120084606.4083194-1-claudiu.beznea.uj@bp.renesas.com/

 drivers/net/ethernet/renesas/ravb_main.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index 50c4c79be035..cd3474168452 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -2650,7 +2650,9 @@ static int ravb_probe(struct platform_device *pdev)
 		goto out_free_netdev;
 
 	pm_runtime_enable(&pdev->dev);
-	pm_runtime_get_sync(&pdev->dev);
+	error = pm_runtime_resume_and_get(&pdev->dev);
+	if (error < 0)
+		goto out_runtime_disable;
 
 	if (info->multi_irqs) {
 		if (info->err_mgmt_irqs)
@@ -2876,6 +2878,7 @@ static int ravb_probe(struct platform_device *pdev)
 	clk_disable_unprepare(priv->refclk);
 out_release:
 	pm_runtime_put(&pdev->dev);
+out_runtime_disable:
 	pm_runtime_disable(&pdev->dev);
 	reset_control_assert(rstc);
 out_free_netdev:
-- 
2.39.2