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 X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_2 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 55B1DC33CA2 for ; Fri, 10 Jan 2020 08:04:41 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 28ECB20678 for ; Fri, 10 Jan 2020 08:04:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="BRpWJwY+" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 28ECB20678 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=collabora.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=5H4Y9JBJ/wUCxq7KVeH4R9gX6s1yr48IWVjGfGV6fcs=; b=BRpWJwY+IKh+Ny 8sGcETnQhrRtjQRqeLL2RafAW3Bs3xzjmFaoG9zhxoudBTWtm0GSAMhD3IzSKKfRLAkGZDTS1awhD mgUoZwhBD4/NXutisYXC5Iy/SBDuNANASsnjtfY0FFKtjA2XUdOvU7XXksxA2mK69SrflKXTMOATw qhecu6h3hKSHQloLg2fN6AP+u40z3brEzvJ/IXxEM1yA4EXb9HPfW0l/+YoqEwNqxhc5y5zfS5aMV DfQEgq4lLuaRy1cNV4BkOhNb8cAf/d0Hg6EnllqmAiXRyHRR32K+M2f3crRiaj/X0Tv5zbbMt77se BN+1IsfUU7Sc/Vf6+L5Q==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1ippHS-0001eo-PO; Fri, 10 Jan 2020 08:04:30 +0000 Received: from bhuna.collabora.co.uk ([46.235.227.227]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1ippHP-0001dx-RC for linux-mtd@lists.infradead.org; Fri, 10 Jan 2020 08:04:29 +0000 Received: from localhost (unknown [IPv6:2a01:e0a:2c:6930:5cf4:84a1:2763:fe0d]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: bbrezillon) by bhuna.collabora.co.uk (Postfix) with ESMTPSA id B25EC2939B8; Fri, 10 Jan 2020 08:04:25 +0000 (GMT) Date: Fri, 10 Jan 2020 09:04:22 +0100 From: Boris Brezillon To: Chuanhong Guo Subject: Re: [PATCH v2] mtd: nand: spi: rework detect procedure for different read id op Message-ID: <20200110090422.75988c49@collabora.com> In-Reply-To: References: <20200110025218.1257809-1-gch981213@gmail.com> <20200110075859.3edfae3a@collabora.com> Organization: Collabora X-Mailer: Claws Mail 3.17.4 (GTK+ 2.24.32; x86_64-redhat-linux-gnu) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200110_000428_009032_AAB55F67 X-CRM114-Status: GOOD ( 12.79 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Vignesh Raghavendra , Boris Brezillon , Richard Weinberger , open list , linux-mtd@lists.infradead.org, Miquel Raynal Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org On Fri, 10 Jan 2020 15:34:28 +0800 Chuanhong Guo wrote: > Hi! > > On Fri, Jan 10, 2020 at 2:59 PM Boris Brezillon > wrote: > > [...] > > > + ret = spinand_read_id_op(spinand, 1, 0, id); > > > + if (ret) > > > + return ret; > > > + ret = spinand_manufacturer_match(spinand, > > > + SPINAND_READID_METHOD_OPCODE_ADDR); > > > + if (!ret) > > > + return 0; > > > + > > > + ret = spinand_read_id_op(spinand, 0, 1, id); > > > > Hm, we should probably do only one of each read_id and iterate over all > > manufacturers/chips each time instead of doing 3 read_ids per > > manufacturer. > > This actually do the former instead of the latter. Maybe the function > names are a bit > misleading. spinand_manufacturer_match iterates over all manufacturers > in one call, > and spinand_manufacturer_detect is called once in spinand_detect. > Do you have suggestions on function naming? Maybe you can just inline the content of this function in spinand_detect(). ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/