From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792492670; b=ronXHcObjmb65o7h53SW7VfextyPBnMdjfIBDypFcmKuKzCYpzFsXsns9HObnQSd4gFY eWNq4i2FErslBCLRatnZkLm01mrcJSiiLkPO04ZfxtCM8/jCKCf3caVtJdqJXVXxOA7FU DhDj8bOZuNgTtwSHtW9uofiO4RoaUqNKYJH483v+Diy4AQSI81ETCPBD3CXd/Q9kmrWpH NL4nxxVHbWe4F+t+oxZSgToREJKMLK5BoztXNZRx18mS0XEtMjV4c2WNxKgTKCCikUTXR 5aAn/7cnMuuX+onxNOygc4DnqfFa7ESYglOp7HDvzM0U1Purya84aGUBBLmWix9nZGw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792492670; h=Received:DKIM-Signature:Date:From:To:Cc:Subject:Message-ID: References:MIME-Version:Content-Type:Content-Disposition:In-Reply-To; bh=pQ7BMpJBbKomkOvbdvd4pG9zo1vWZwj/fOjMBE4qlBw=; b=dyQxIfanF2fDWzUXokhdi1ONejEhnohzH7buVa4QsH07a0bjMnNIwvsr3dIZ/18+prf1 sc399XmhIPyi/K1zYFOP+2U9kxDJTZEmr6bQG3ITtKxlkRW89e+V30HpvNyS+kNWgYHUC KGGtE5SEREz5AS4fTA6l7avseh4EDepGm7WopV8a5D3OSzFhSahEU2ficVUsbt2GKB+vY 6QAomQzlcc8u4wqqv1HnXyU+a7vwHVF4xuB9iyC9wFVWbuZ2/kHJAuFKB09dLcvaEuK5s YzSfNOsbP6NzFfKmP/NFre2XDnE5IXuRozQ67Y8kZr0zQ3eW8q+cxrLwAo7dmh5ysEA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=YHZO7ujt; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C9D7D606A31B; Tue, 20 Oct 2026 10:37:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=YHZO7ujt Received: by smtp.kernel.org (Postfix) with ESMTPSA id B21531F000C6; Tue, 20 Oct 2026 10:37:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1792492669; bh=pQ7BMpJBbKomkOvbdvd4pG9zo1vWZwj/fOjMBE4qlBw=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=YHZO7ujtOVIZxltquLVTT1oIJuSNp2iqSJq6Iw6bHLIra+5yetHQHAMeUP8vzbbWm iOdOQ8sjiGcTXkL2K7tq1Ocv8yl23zC52sPX42TKpbonGKHmHYs4EpHClEyVfGpKOZ QwP+a5vnZ6T/EHUva9ZO+gczps6mcfmy3dBmXkHLd7pJlod8/Jn9tNooZLzwoUlbb+ BxOkiOnBZmYo+riboRxgkJSZdxV3+M/TSAjmZNr8Gt0BnsndOcUnnk19L6By5f9WI3 XxBQEsz7A3CMUCXP6DOMh3rFz/hJYte6MbnK1iSuNOID/Rh3voT07pSHQNhoLP7BMH BHiamWTYnavWw== Date: Tue, 20 Oct 2026 11:37:44 +0100 From: Lee Jones To: Rillian Grant Cc: sashiko-reviews@lists.linux.dev, linux-leds@vger.kernel.org, conor+dt@kernel.org, devicetree@vger.kernel.org, robh@kernel.org Subject: Re: [PATCH v3 3/4] leds: flash: lm3643: Describe the LED of ACPI boards without LED nodes Message-ID: <20261020103744.GA1795367@google.com> References: <20261011191026.149338-1-rillian.grant@gmail.com> <20261011191026.149338-4-rillian.grant@gmail.com> <37Wk96VpSLOh-P0MeN457Q@gmail.com> X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <37Wk96VpSLOh-P0MeN457Q@gmail.com> On Tue, 13 Oct 2026, Rillian Grant wrote: > > [Severity: High] > > Is there a potential race condition here when multiple devices probe > > concurrently? > > > > If two threads execute lm3643_add_dmi_leds() simultaneously (for example, > > during concurrent sysfs bind or async probe of two LM3643 devices matching > > the same DMI table), they both might pass the lockless > > software_node_fwnode(nodes[0]) check before either registers the nodes. > > This condition is currently unreachable. It would require two LM3643 > instances on the same DMI entry. > > I'd be happy to add a static mutex if preferred, or alongside any future > DMI entry for a board with more than one LM3643. Please. -- Lee Jones