From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4661DC369B5 for ; Mon, 14 Apr 2025 08:08:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To: Subject:MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=zjZthIC2TCB0i2WQorEmDBEQZRbkmXK6Hc2/cSG2AjY=; b=Nl26DSSYh7svY+ d1ykLTWHnGqqEQhjgx9CrYGM7DkAU7aI46gvYFtCJtnziix8EqkYkFzy5PK9wNgIjriWL4/cQdCLV ZtbdKNuEcwXQCeq102QuQGuFRw31p/rAVgRcbdnOSKxgtghPqfscZ6r4PdfGKCvgf+nJPPIzK+Ewe XD9TUZ0zfdeEwF17APA3O4YwEzzjnH6a+CdB4GlDv5mTRI/6CFfiI/ANcRR5+XhTq+0cTh0X6IiMc Td+qcxAWEBTZ2pY9GRrPEmEdw3S1606NAzgXIU6NEMHEJxX+5nb//bhRngH15tnyq0I1XneeX1rBX 6TJqaoELtNP/PK9TDY0g==; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org On 14/04/2025 09:40, Johan Hovold wrote: > On Mon, Apr 14, 2025 at 09:30:19AM +0200, Krzysztof Kozlowski wrote: >> 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. > > I'm afraid you're mistaken here. See __devm_ioremap() which can return > NULL. > Uh, you are right, I only checked devm_of_iomap in qmp_usb_iomap(). Anyway, the fix should be different - given function should either return ERR or NULL, not both, so devm_ioremap return value needs to be wrapped in ERR_PTR. Best regards, Krzysztof -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy