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From: Felix Gu <ustc.gu@gmail.com>
To: Vinod Koul <vkoul@kernel.org>,
	 Neil Armstrong <neil.armstrong@linaro.org>,
	 Geert Uytterhoeven <geert+renesas@glider.be>,
	 Magnus Damm <magnus.damm@gmail.com>,
	 Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>,
	 Kishon Vijay Abraham I <kishon@kernel.org>,
	 Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Cc: linux-phy@lists.infradead.org, linux-renesas-soc@vger.kernel.org,
	 linux-kernel@vger.kernel.org, Felix Gu <ustc.gu@gmail.com>
Subject: [PATCH v2 2/3] phy: renesas: rcar-gen2: Return -EINVAL for out-of-range channel reg
Date: Tue, 04 Aug 2026 23:24:18 +0800	[thread overview]
Message-ID: <20260804-rcar-gen2-v2-2-829cb84112ca@gmail.com> (raw)
In-Reply-To: <20260804-rcar-gen2-v2-0-829cb84112ca@gmail.com>

When of_property_read_u32() succeeds but channel_num exceeds
data->num_channels, rcar_gen2_phy_probe() returns error which is 0,
so probe reports success even though no PHY provider is registered.

Return -EINVAL in that case.

Fixes: 1233f59f745b ("phy: Renesas R-Car Gen2 PHY driver")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
---
 drivers/phy/renesas/phy-rcar-gen2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/phy/renesas/phy-rcar-gen2.c b/drivers/phy/renesas/phy-rcar-gen2.c
index 5a272e25e051..b18727ed41a1 100644
--- a/drivers/phy/renesas/phy-rcar-gen2.c
+++ b/drivers/phy/renesas/phy-rcar-gen2.c
@@ -390,7 +390,7 @@ static int rcar_gen2_phy_probe(struct platform_device *pdev)
 		error = of_property_read_u32(np, "reg", &channel_num);
 		if (error || channel_num >= data->num_channels) {
 			dev_err(dev, "Invalid \"reg\" property\n");
-			return error;
+			return error ?: -EINVAL;
 		}
 		channel->select_mask = select_mask[channel_num];
 

-- 
2.43.0


-- 
linux-phy mailing list
linux-phy@lists.infradead.org
https://lists.infradead.org/mailman/listinfo/linux-phy

WARNING: multiple messages have this Message-ID (diff)
From: Felix Gu <ustc.gu@gmail.com>
To: Vinod Koul <vkoul@kernel.org>,
	 Neil Armstrong <neil.armstrong@linaro.org>,
	 Geert Uytterhoeven <geert+renesas@glider.be>,
	 Magnus Damm <magnus.damm@gmail.com>,
	 Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>,
	 Kishon Vijay Abraham I <kishon@kernel.org>,
	 Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Cc: linux-phy@lists.infradead.org, linux-renesas-soc@vger.kernel.org,
	 linux-kernel@vger.kernel.org, Felix Gu <ustc.gu@gmail.com>
Subject: [PATCH v2 2/3] phy: renesas: rcar-gen2: Return -EINVAL for out-of-range channel reg
Date: Tue, 04 Aug 2026 23:24:18 +0800	[thread overview]
Message-ID: <20260804-rcar-gen2-v2-2-829cb84112ca@gmail.com> (raw)
In-Reply-To: <20260804-rcar-gen2-v2-0-829cb84112ca@gmail.com>

When of_property_read_u32() succeeds but channel_num exceeds
data->num_channels, rcar_gen2_phy_probe() returns error which is 0,
so probe reports success even though no PHY provider is registered.

Return -EINVAL in that case.

Fixes: 1233f59f745b ("phy: Renesas R-Car Gen2 PHY driver")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
---
 drivers/phy/renesas/phy-rcar-gen2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/phy/renesas/phy-rcar-gen2.c b/drivers/phy/renesas/phy-rcar-gen2.c
index 5a272e25e051..b18727ed41a1 100644
--- a/drivers/phy/renesas/phy-rcar-gen2.c
+++ b/drivers/phy/renesas/phy-rcar-gen2.c
@@ -390,7 +390,7 @@ static int rcar_gen2_phy_probe(struct platform_device *pdev)
 		error = of_property_read_u32(np, "reg", &channel_num);
 		if (error || channel_num >= data->num_channels) {
 			dev_err(dev, "Invalid \"reg\" property\n");
-			return error;
+			return error ?: -EINVAL;
 		}
 		channel->select_mask = select_mask[channel_num];
 

-- 
2.43.0


  parent reply	other threads:[~2026-08-04 15:24 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-04 15:24 [PATCH v2 0/3] phy: renesas: rcar-gen2: three cleanups Felix Gu
2026-08-04 15:24 ` Felix Gu
2026-08-04 15:24 ` [PATCH v2 1/3] phy: renesas: rcar-gen2: Fix double of_node_put on phy creation failure Felix Gu
2026-08-04 15:24   ` Felix Gu
2026-08-04 15:38   ` sashiko-bot
2026-08-04 15:24 ` Felix Gu [this message]
2026-08-04 15:24   ` [PATCH v2 2/3] phy: renesas: rcar-gen2: Return -EINVAL for out-of-range channel reg Felix Gu
2026-08-04 15:49   ` sashiko-bot
2026-08-04 15:24 ` [PATCH v2 3/3] phy: renesas: rcar-gen2: Use dev_err_probe() in probe Felix Gu
2026-08-04 15:24   ` Felix Gu
2026-08-04 15:59   ` sashiko-bot

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