From patchwork Tue Sep 5 20:23:39 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: William Kennington X-Patchwork-Id: 810275 X-Patchwork-Delegate: boris.brezillon@free-electrons.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.infradead.org (client-ip=65.50.211.133; helo=bombadil.infradead.org; envelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Pu+xbOFO"; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.b="v/BDiMvC"; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3xmyqp1rNKz9t2c for ; Wed, 6 Sep 2017 06:24:38 +1000 (AEST) 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:To:From:Subject:Message-Id:Date: MIME-Version:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=neFnItIh5qvSHFAlHv+glOImj/TExjrLIufJwiC1a0A=; b=Pu+xbOFOJxMHp2 Z9he4uBzM5S8gi8ifNLjyBLdbyTSDiv+UkC1KYS56tAybukLlbuKQSdtuStjUs+5IYWxK25hHfm3f OFafLUBmgzwhQV/7wCFfaXcCTev+34/D3KNIk+4rOqTL036sStiKhafAidfyjhAzFGTgIUKgTNhCE DYGbprdDdfVUw15Slv0xGeCn7cEXsCRl/qzVB6Eu8zGmhILHnaPugAlgN/DncN4vMT8aQOB6jlRYi 2TdTNGmUFL0l7hWXV/sSUqUW8YpCptT18Tsv2SvnEoCs87XiRtg+94N/L1gu8t1Yc9QxGN6enhTb8 X0/BFBwTBuWZHDPWDUVw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1dpKOc-0008Dt-9y; Tue, 05 Sep 2017 20:24:30 +0000 Received: from mail-pg0-x24a.google.com ([2607:f8b0:400e:c05::24a]) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1dpKOD-00089s-Br for linux-mtd@lists.infradead.org; Tue, 05 Sep 2017 20:24:06 +0000 Received: by mail-pg0-x24a.google.com with SMTP id 6so7324293pgh.4 for ; Tue, 05 Sep 2017 13:23:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:date:message-id:subject:from:to:cc; bh=I0vo+i4gT8sLIhswWov4NgCmYCgN+oyqerdU3bxmjCE=; b=v/BDiMvCXlJ1jP2a+f+AB2Bi+3GH0vc/Buf/QfjClSeG95mVqpoDInEuEj2EcqvrIu 1OC3ysIDJzoO0xB7LNutPW6mjm9KK2hVa9Aj8IlRhb9DLLZr6Bydpiec4+Eo3X1FTmn5 K1M2x3z/Ynbeno97NNDzQXAHybbUf/rvX428IpZq5JbPsK/Qm6umfMhjobQQdW6/GkW2 WtuD+T12gcwnG3T5+IEHwYTiGOTPvXT8Cvd0hmq5MlBinM0EaR/Qg4XaJcAVr49Y131T ymU9Zpv3im1luDofpv+X94PooZSRVosQXWY1ctNM7vdLGK8UMU9vupY1le9Y9sRqUd30 S60g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to:cc; bh=I0vo+i4gT8sLIhswWov4NgCmYCgN+oyqerdU3bxmjCE=; b=FZRt1pu4S213mmfpl2JPoMcwLmU2IiwqPCxMSm8eXzPDmvXJr6EJDDQjkDVAN782+n l+hATaZbWYPg2OUjlOsFVwakxc5T5EkdRX9n/9Kp2CbmHwfWkX753lQjSF6mLKfzcaHi jvFj2UjUYC1cFyegsm0hp53X8GdQ+toUp2TPmGhg/k6EWgEhCMEvcH/MMa5G7lSnbIsy H7Tr4UtFaffUghgyEQz9sn189/QEiVz4dT/5fZH2lag4RSSnlcNa9I2vJRO1aAQDXFTU KbWY4Toyu9RKl55A74J5hJvXU43pCj1w2RR3AN5dsq/cvqBiMIn2esMdutc6wbBVHtSK 872Q== X-Gm-Message-State: AHPjjUhOGG+E87Q2a8kU6w37poor4HbRH4jNk/kvwu/ss0JP7UFcjnGr VqpX3zeDJrblER0f2cmaPpM+Ii2fTJZdx2lsk864VbqkEaS1QhhO56Pm4DD8qO5nd7ekr6LMBGr 8RipulnPqO35R8dNDu2glQjJy3/AZMi9+xz0jRDgASMtSS9p8YWHrCg== X-Google-Smtp-Source: ADKCNb7Y+aaOOuk5WrTG4xUDlrgGy02pRqRR5Kj2eNh4MiaaBWi+Ssvi3ZSYHV5yDFv+aVxTWyen3C0= MIME-Version: 1.0 X-Received: by 10.99.135.200 with SMTP id i191mr3245234pge.97.1504643022908; Tue, 05 Sep 2017 13:23:42 -0700 (PDT) Date: Tue, 5 Sep 2017 13:23:39 -0700 Message-Id: <20170905202339.20732-1-wak@google.com> X-Mailer: git-send-email 2.13.1 Subject: [PATCH] mtd: powernv: Support MTD_NO_ERASE From: "William A. Kennington III" To: linux-mtd@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170905_132405_463055_7DCAAA25 X-CRM114-Status: UNSURE ( 9.31 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.0 (--) X-Spam-Report: SpamAssassin version 3.4.1 on bombadil.infradead.org summary: Content analysis details: (-2.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [2607:f8b0:400e:c05:0:0:0:24a listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: wak@google.com Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org As of skiboot@ba99af9b149d02438347b055e6e7d6bd15e33551, we now support adding a device tree entry which marks a flash device as not needing erase. This patch adds support for setting MTD_NO_ERASE on powernvflash devices which have the property no-erase. Signed-off-by: William A. Kennington III --- drivers/mtd/devices/powernv_flash.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/mtd/devices/powernv_flash.c b/drivers/mtd/devices/powernv_flash.c index f5396f26ddb4..fab9f9121b4c 100644 --- a/drivers/mtd/devices/powernv_flash.c +++ b/drivers/mtd/devices/powernv_flash.c @@ -196,6 +196,8 @@ static int powernv_flash_set_driver_info(struct device *dev, mtd->name = of_get_property(dev->of_node, "name", NULL); mtd->type = MTD_NORFLASH; mtd->flags = MTD_WRITEABLE; + if (of_property_read_bool(dev->of_node, "no-erase")) + mtd->flags |= MTD_NO_ERASE; mtd->size = size; mtd->erasesize = erase_size; mtd->writebufsize = mtd->writesize = 1;