linux-kernel - [PATCH 06/13] memory: tegra30-emc: Simplify and handle deferred probe with dev_err

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250910-memory-tegra-cleanup-v1-6-023c33a2d997@linaro.org>
Date: Wed, 10 Sep 2025 12:44:02 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Krzysztof Kozlowski <krzk@...nel.org>, 
 Thierry Reding <thierry.reding@...il.com>, 
 Jonathan Hunter <jonathanh@...dia.com>
Cc: linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org, 
 Aaron Kling <webgeek1234@...il.com>, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH 06/13] memory: tegra30-emc: Simplify and handle deferred
 probe with dev_err_probe()

Certain calls, like clk_get, can cause probe deferral and driver should
handle it.  Use dev_err_probe() to fix that and also change other
non-deferred errors cases to make the code simpler.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 drivers/memory/tegra/tegra30-emc.c | 22 ++++++++--------------
 1 file changed, 8 insertions(+), 14 deletions(-)

diff --git a/drivers/memory/tegra/tegra30-emc.c b/drivers/memory/tegra/tegra30-emc.c
index c96aa63a5aa085a409ae7ec901d2a210748f5bcb..cca386af423e9647266878ce6cd1bcec09c8eba4 100644
--- a/drivers/memory/tegra/tegra30-emc.c
+++ b/drivers/memory/tegra/tegra30-emc.c
@@ -1563,9 +1563,8 @@ static int tegra_emc_interconnect_init(struct tegra_emc *emc)
 
 remove_nodes:
 	icc_nodes_remove(&emc->provider);
-	dev_err(emc->dev, "failed to initialize ICC: %d\n", err);
 
-	return err;
+	return dev_err_probe(emc->dev, err, "failed to initialize ICC\n");
 }
 
 static void devm_tegra_emc_unset_callback(void *data)
@@ -1592,16 +1591,13 @@ static int tegra_emc_init_clk(struct tegra_emc *emc)
 		return err;
 
 	emc->clk = devm_clk_get(emc->dev, NULL);
-	if (IS_ERR(emc->clk)) {
-		dev_err(emc->dev, "failed to get EMC clock: %pe\n", emc->clk);
-		return PTR_ERR(emc->clk);
-	}
+	if (IS_ERR(emc->clk))
+		return dev_err_probe(emc->dev, PTR_ERR(emc->clk),
+				     "failed to get EMC clock\n");
 
 	err = clk_notifier_register(emc->clk, &emc->clk_nb);
-	if (err) {
-		dev_err(emc->dev, "failed to register clk notifier: %d\n", err);
-		return err;
-	}
+	if (err)
+		return dev_err_probe(emc->dev, err, "failed to register clk notifier\n");
 
 	err = devm_add_action_or_reset(emc->dev,
 				       devm_tegra_emc_unreg_clk_notifier, emc);
@@ -1654,10 +1650,8 @@ static int tegra_emc_probe(struct platform_device *pdev)
 
 	err = devm_request_irq(&pdev->dev, emc->irq, tegra_emc_isr, 0,
 			       dev_name(&pdev->dev), emc);
-	if (err) {
-		dev_err(&pdev->dev, "failed to request irq: %d\n", err);
-		return err;
-	}
+	if (err)
+		return dev_err_probe(&pdev->dev, err, "failed to request irq\n");
 
 	err = tegra_emc_init_clk(emc);
 	if (err)

-- 
2.48.1