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Tue, 04 Aug 2026 08:24:33 -0700 (PDT) From: Felix Gu Date: Tue, 04 Aug 2026 23:24:18 +0800 Subject: [PATCH v2 2/3] 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: 7bit Message-Id: <20260804-rcar-gen2-v2-2-829cb84112ca@gmail.com> References: <20260804-rcar-gen2-v2-0-829cb84112ca@gmail.com> In-Reply-To: <20260804-rcar-gen2-v2-0-829cb84112ca@gmail.com> To: Vinod Koul , Neil Armstrong , Geert Uytterhoeven , Magnus Damm , Krzysztof Kozlowski , Kishon Vijay Abraham I , Sergei Shtylyov Cc: 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=1785857060; l=1024; i=ustc.gu@gmail.com; h=from:subject:message-id; bh=OopYQvhAzOgtFkvIvP9rtCLorwAIPYHcEYrvhnabJkA=; b=BsDksh2TdDHRuuWFLX2lyAqs3HxunCcOgfL9ctOYsr3hJ8MAEq/fJvK3TGgzc+SXCD58Mqjag BWpevYb9t1uBC4XdEjt8ivY5n2ryEPBd5wOmV2P/WXBB2U86s1LEReX 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 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