linux-kernel - [PATCH] hwrng: cn10k - Remove the use of dev_err

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Message-Id: <20250820123926.473600-1-liaoyuanhong@vivo.com>
Date: Wed, 20 Aug 2025 20:39:23 +0800
From: Liao Yuanhong <liaoyuanhong@...o.com>
To: Olivia Mackall <olivia@...enic.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	linux-crypto@...r.kernel.org (open list:HARDWARE RANDOM NUMBER GENERATOR CORE),
	linux-kernel@...r.kernel.org (open list)
Cc: Liao Yuanhong <liaoyuanhong@...o.com>
Subject: [PATCH] hwrng: cn10k - Remove the use of dev_err_probe()

Logging messages that show some type of "out of memory" error are generally
unnecessary as there is a generic message and a stack dump done by the
memory subsystem. These messages generally increase kernel size without
much added value[1].

The dev_err_probe() doesn't do anything when error is '-ENOMEM'. Therefore,
remove the useless call to dev_err_probe(), and just return the value
instead.

[1]: https://lore.kernel.org/lkml/1402419340.30479.18.camel@joe-AO725/

Signed-off-by: Liao Yuanhong <liaoyuanhong@...o.com>
---
 drivers/char/hw_random/cn10k-rng.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/char/hw_random/cn10k-rng.c b/drivers/char/hw_random/cn10k-rng.c
index 31935316a160..3b4e78182e14 100644
--- a/drivers/char/hw_random/cn10k-rng.c
+++ b/drivers/char/hw_random/cn10k-rng.c
@@ -188,7 +188,7 @@ static int cn10k_rng_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 
 	rng->reg_base = pcim_iomap(pdev, 0, 0);
 	if (!rng->reg_base)
-		return dev_err_probe(&pdev->dev, -ENOMEM, "Error while mapping CSRs, exiting\n");
+		return -ENOMEM;
 
 	rng->ops.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
 				       "cn10k-rng-%s", dev_name(&pdev->dev));
-- 
2.34.1