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dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ctOxcuRu" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8566B1F00A3A; Mon, 20 Jul 2026 15:37:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784561857; bh=AdydMQD6XqNimOrdxgFxFFc3ogSzS1ey/fOCAe9XFwk=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=ctOxcuRuX0K0OlXUz230voFAZRzKZCP1GkbYvyMHCe153u/GdMDZeYNGkAFJEIofn wRMG/Hg52teVgdEVz2/5S7nfe+b9amFXk1NhYkfN3xoPv4oUPBpawgVKjTCyQAAmV7 G5sxh0yRxGej+IfxEBXS18foLp0JPX3r6+Wsi6R62+I6f0220wiq0unqb3SOty3qGq fCmhbIteMJGbTvFm6NpUsmk1s0cC8iAhlvIVPYJCizNW3a23GTpLd+Mfajsl+WQFIO MRl5NtzbbgdqZ2MaPCQ7UUtQKTGp581GNqMC7hnX/f3E8H1HMNaI1KRORy1xzrtHoQ 0ZFzgicFc6iRg== From: sashiko-bot@kernel.org Subject: Re: [PATCH v3 2/2] phy: mediatek: Add support for PCI-Express Gen4 S-PHY Reply-To: sashiko-reviews@lists.linux.dev To: "AngeloGioacchino Del Regno" Cc: conor+dt@kernel.org, neil.armstrong@linaro.org, olteanv@gmail.com, linux-phy@lists.infradead.org, vkoul@kernel.org, devicetree@vger.kernel.org, robh@kernel.org In-Reply-To: <20260720152654.92216-3-angelogioacchino.delregno@collabora.com> References: <20260720152654.92216-1-angelogioacchino.delregno@collabora.com> <20260720152654.92216-3-angelogioacchino.delregno@collabora.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Mon, 20 Jul 2026 15:37:36 +0000 Message-Id: <20260720153736.8566B1F00A3A@smtp.kernel.org> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Thank you for your contribution! Sashiko AI review found 1 potential issue(= s) to consider: - [Low] The driver emits a false-positive kernel error log when NVMEM is di= sabled or unsupported. -- --- Patch [2]: [PATCH v3 2/2] phy: mediatek: Add support for PCI-Express Ge= n4 S-PHY --- commit 93ce035a5e3a24b4c6f63697869bbcb5d8e50db4 Author: AngeloGioacchino Del Regno Subject: phy: mediatek: Add support for PCI-Express Gen4 S-PHY This commit adds support for the PCI-Express Gen4 S-PHY found in the latest MediaTek SoCs, including MT8196, MT8894 and similar. [ ... ] > diff --git a/drivers/phy/mediatek/phy-mtk-pcie-sphy.c b/drivers/phy/media= tek/phy-mtk-pcie-sphy.c > new file mode 100644 > index 0000000000000..853aafa182597 > --- /dev/null > +++ b/drivers/phy/mediatek/phy-mtk-pcie-sphy.c [ ... ] > +static int mtk_pcie_sphy_get_one_cal_para(struct device *dev, const char= *name, u8 max_val) > +{ > + u16 buf; > + u8 tmp; > + int ret; > + > + /* > + * All of the calibrations are always max 8 bits long, but some may > + * be split between two different 8-bits cells: handle this corner > + * case by retrying reading as u16. > + */ > + ret =3D nvmem_cell_read_u8(dev, name, &tmp); > + if (ret =3D=3D 0) > + buf =3D tmp; > + else > + ret =3D nvmem_cell_read_u16(dev, name, &buf); > + > + if (ret =3D=3D -ENOENT) { > + dev_info(dev, "No calibration for %s. Using defaults\n", name); > + return -ENOENT; > + } else if (ret) > + return dev_err_probe(dev, ret, > + "Cannot get calibration data for %s\n", name); [Severity: Low] Does this emit a false-positive kernel error log when NVMEM is disabled or unsupported? If CONFIG_NVMEM=3Dn, the NVMEM APIs return -EOPNOTSUPP, which will cause th= is path to print an error with dev_err_probe(). However, the caller in mtk_pcie_sphy_get_calibration_data() gracefully handles -EOPNOTSUPP as a non-error condition: if (ret < 0) { /* * If any of the calibration values is missing, or if there is * no calibration at all in the eFuses, this is not a problem, * as the PHY doesn't require one to actually work. */ if (ret =3D=3D -ENOENT || ret =3D=3D -EOPNOTSUPP) { cal->supported =3D false; return 0; } Could -EOPNOTSUPP be handled silently here in mtk_pcie_sphy_get_one_cal_par= a() to avoid spurious error messages during boot? > + > + if (buf > max_val) > + return dev_err_probe(dev, -ERANGE, > + "Bad value %u retrieved for %s.\n", buf, name); > + > + return buf; > +} --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20260720152654.9221= 6-1-angelogioacchino.delregno@collabora.com?part=3D2