From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D39232E4242; Thu, 3 Jul 2025 14:44:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751553885; cv=none; b=XcschSCCyF2jUjZOr5hAYcvJ9Nh0cKF+pki16GSoTxK2SjhdXaVvx+8SLFeSI6O/pna2BKd3M5/pieKlsufkQ09A/wuQ6ZRkA1sh3grbHSkbOuMyNHIpmJo7UhTIjpwRjUVdrWKr1+NbX4v6Jkc2kuETwsEbc4jrQtwYVvzZqIk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751553885; c=relaxed/simple; bh=XPEtNTVMCHdb4TNUMTFLcgrTFSjgJp+Y3kckMU7/x2A=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ShqqzR0Gm09s7KAYQxZ1W54wc8vJprC8jRLe/D35wGb23qWNPAOGBR4d+emYXMMGbOLD7RyaEOL/5Qc00wLKlxz1Ff+om+uutc+4CAY6Y8ZQfdp9aQ4KvrUbIrZtOLxmSm1XuuGSCYnBKzjISvsgVAhxBTHc4EuNM4LBn+ty3YU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=AdKx+qu6; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="AdKx+qu6" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 99476C4CEE3; Thu, 3 Jul 2025 14:44:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1751553884; bh=XPEtNTVMCHdb4TNUMTFLcgrTFSjgJp+Y3kckMU7/x2A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AdKx+qu6+PRJqqKdCb4EcwGsXpdxkX8FMCFPEjkMcSuM5LrVJvk3hyybz5kLcwYCf BQakxNzkgqB4mHo9JuEQ5HufONfP32yAtp0Lm+/8ykyppzu+CDy15dJiFZcgAXdSM3 NQjVvNGgpC9OvyjmjCODHM1zm0PIy39qryke9s/4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Robert Richter , Gregory Price , Jonathan Cameron , Dave Jiang , Dan Williams , Alison Schofield , "Fabio M. De Francesco" , Sasha Levin Subject: [PATCH 6.12 013/218] cxl/region: Add a dev_err() on missing target list entries Date: Thu, 3 Jul 2025 16:39:21 +0200 Message-ID: <20250703143956.489548039@linuxfoundation.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250703143955.956569535@linuxfoundation.org> References: <20250703143955.956569535@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Robert Richter [ Upstream commit d90acdf49e18029cfe4194475c45ef143657737a ] Broken target lists are hard to discover as the driver fails at a later initialization stage. Add an error message for this. Example log messages: cxl_mem mem1: failed to find endpoint6:0000:e0:01.3 in target list of decoder1.1 cxl_port endpoint6: failed to register decoder6.0: -6 cxl_port endpoint6: probe: 0 Signed-off-by: Robert Richter Reviewed-by: Gregory Price Reviewed-by: Jonathan Cameron Reviewed-by: Dave Jiang Reviewed-by: Dan Williams Reviewed-by: Alison Schofield Reviewed-by: "Fabio M. De Francesco" Tested-by: Gregory Price Acked-by: Dan Williams Link: https://patch.msgid.link/20250509150700.2817697-14-rrichter@amd.com Signed-off-by: Dave Jiang Signed-off-by: Sasha Levin --- drivers/cxl/core/region.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c index a0d6e8d7f42c8..f5429666822f0 100644 --- a/drivers/cxl/core/region.c +++ b/drivers/cxl/core/region.c @@ -1781,6 +1781,13 @@ static int find_pos_and_ways(struct cxl_port *port, struct range *range, } put_device(dev); + if (rc) + dev_err(port->uport_dev, + "failed to find %s:%s in target list of %s\n", + dev_name(&port->dev), + dev_name(port->parent_dport->dport_dev), + dev_name(&cxlsd->cxld.dev)); + return rc; } -- 2.39.5