linux-kernel - Re: [PATCH] phy: qcom-qmp-usb: Fix an NULL vs IS

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Message-ID: <22ec4fc8-9368-4955-ac97-c49b3317d3b3@kernel.org>
Date: Mon, 14 Apr 2025 09:30:19 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Chenyuan Yang <chenyuan0y@...il.com>, vkoul@...nel.org,
 kishon@...nel.org, lumag@...nel.org, quic_kriskura@...cinc.com,
 manivannan.sadhasivam@...aro.org, konrad.dybcio@....qualcomm.com,
 quic_varada@...cinc.com, quic_kbajaj@...cinc.com, johan+linaro@...nel.org
Cc: linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] phy: qcom-qmp-usb: Fix an NULL vs IS_ERR() bug

On 13/04/2025 23:25, Chenyuan Yang wrote:
> In qmp_usb_iomap(), one branch returns the result of devm_ioremap(), which
> can be NULL. Since IS_ERR() does not catch a NULL pointer,

No, that's not true. NAK.

Best regards,
Krzysztof