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Mon, 03 Aug 2026 06:07:34 -0700 (PDT) From: Felix Gu Date: Mon, 03 Aug 2026 21:07:27 +0800 Subject: [PATCH] phy: renesas: rcar-gen2: Return -EINVAL for out-of-range channel reg Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260803-rcar-gen2-1-v1-1-4796ea6e76d8@gmail.com> X-B4-Tracking: v=1; b=H4sIAI6ScGoC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyDHUUlJIzE vPSU3UzU4B8JSMDIzMDCwNj3aLkxCLd9NQ8I11DXUuLNBMTgyQjiyRjUyWgjoKi1LTMCrBp0bE QfnFpUlZqcgnICKXaWgDqnbX7bwAAAA== X-Change-ID: 20260803-rcar-gen2-1-98f440b28b35 To: Vinod Koul , Neil Armstrong , Geert Uytterhoeven , Magnus Damm , Ulrich Hecht , Wolfram Sang , Biju Das , Yoshihiro Shimoda , Sergei Shtylyov Cc: Kishon Vijay Abraham I , linux-phy@lists.infradead.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Felix Gu X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1785762449; l=1170; i=ustc.gu@gmail.com; h=from:subject:message-id; bh=mgNbfurCgEe/9LJSMHHHowLjwvDoD6FclLw6ncGPoTc=; b=tueQA/WphvbJ4bu9l8Nppp5s3Q3nHNa8F151AeQlWVIilNf4EmzaitfNkJ6rvdlaWIfth3I+d TrLTxMQvTEpAYNM0WFNXJ1QjMdjJSBSPtBgd7IzoAxV/5YJUBbIFYXj X-Developer-Key: i=ustc.gu@gmail.com; a=ed25519; pk=fjUXwmjchVN7Ja6KGP55IXOzFeCl9edaHoQIEUA+/hw= 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 --- 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 6c671254c625..f0858d8cc705 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 =3D of_property_read_u32(np, "reg", &channel_num); if (error || channel_num >=3D data->num_channels) { dev_err(dev, "Invalid \"reg\" property\n"); - return error; + return error ?: -EINVAL; } channel->select_mask =3D select_mask[channel_num]; =20 --- base-commit: 415606a7be939835db9b0d6b711887586646346d change-id: 20260803-rcar-gen2-1-98f440b28b35 Best regards, -- =20 Felix Gu