From patchwork Mon Mar 23 16:34:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 1260141 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-tegra-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=CyNyeMKW; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 48mKky5TJmz9sSZ for ; Tue, 24 Mar 2020 03:36:10 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727564AbgCWQfo (ORCPT ); Mon, 23 Mar 2020 12:35:44 -0400 Received: from mail-lj1-f194.google.com ([209.85.208.194]:43052 "EHLO mail-lj1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727507AbgCWQfm (ORCPT ); Mon, 23 Mar 2020 12:35:42 -0400 Received: by mail-lj1-f194.google.com with SMTP id g27so6507421ljn.10; Mon, 23 Mar 2020 09:35:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=w0YlAmpluZ5D3NO8kHqv749YNcVtvXYMv+8BYDY6gX8=; b=CyNyeMKW8PFLFOs7Bf7yjiDE4vIvnA+m7J9nEYRxdr+Gx1hmxopSIb5ynvJR2d9yYu FYzHnpeLwnV7RWIcWnXZnyTP+PsSoYJ5rbQjBQ5kWKyzAeJgpJ8yjaureGlZGmefXBvh EY+bpzSo2CeGLmzEfaVHgMJ9F/SalVmxfsm+vZouSgpfMu8I0HWYpK9c4dNMlk60iH2S p/AnZlnl3PKdLdg1R6EfJiBS3XoSqkrtGMqe7AqPuh+JxJRNEkEe7UvpTE3HrtLrgJZI sSWP/L9WQstfoR8glEAbL3+37AIMouj+vfXg5vc0e56Ltz+1BPzomgmMYe1cEv57J2Ap 4frA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=w0YlAmpluZ5D3NO8kHqv749YNcVtvXYMv+8BYDY6gX8=; b=Hb51vSoE5wnThK8bahflY4zf+i67/F8c9U88AQsl4zr50tR7sfBB63LfXkDkKtKJ21 1CY8fyH56PEKd7EeAgWmOzS3HfYLv/dG2c4qU/l+Yiu/Je3GkQYbOA8e/Mnb9Nyhq/LZ cRaiSf3edZWLpWmSnqmcgePLdie5BJecOHjPptIV/IuhWba5jecIbSsw7L7Ir80Undo+ /QwazAYRfN5dMAhD/6Swvu8S1B2LUR+CZHo1hUQo+6HK/CbBbcVxMcnOXALoldxnPvHN BR5fmR+MIY/+OCDbYKkOYhNDcfQ/4x6dRyOsVBIxUYdy6QQqSvZHyxXY1jjeHWxjD6TS EKuw== X-Gm-Message-State: ANhLgQ2V88b/V4OCIlEVOYRxMZZ5NJCE+38nuEjy0PMn56sz5ULkius+ m1W5yxI04BIMSRjqtoRk6ik= X-Google-Smtp-Source: ADFU+vuaNbeMeWKlKJCFpCe6dFW/Y2Ycr+EGB6ZeJQNghi8JRS+awpjDqrGdi02SL38G0Vf4wvZl5w== X-Received: by 2002:a2e:984d:: with SMTP id e13mr13623932ljj.275.1584981339297; Mon, 23 Mar 2020 09:35:39 -0700 (PDT) Received: from localhost.localdomain (94-29-39-224.dynamic.spd-mgts.ru. [94.29.39.224]) by smtp.gmail.com with ESMTPSA id m14sm4820017lfo.25.2020.03.23.09.35.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Mar 2020 09:35:38 -0700 (PDT) From: Dmitry Osipenko To: Jens Axboe , Thierry Reding , Jonathan Hunter , =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= , David Heidelberg , Peter Geis , Stephen Warren , Nicolas Chauvet , Ulf Hansson , Adrian Hunter , Billy Laws Cc: linux-tegra@vger.kernel.org, linux-block@vger.kernel.org, Andrey Danin , Gilles Grandou , Ryan Grachek , linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 05/10] mmc: block: Add mmc_bdev_to_part_type() helper Date: Mon, 23 Mar 2020 19:34:26 +0300 Message-Id: <20200323163431.7678-6-digetx@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200323163431.7678-1-digetx@gmail.com> References: <20200323163431.7678-1-digetx@gmail.com> MIME-Version: 1.0 Sender: linux-tegra-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org NVIDIA Tegra Partition Table parser needs to know eMMC boot partition ID that is associated with the block device in order to validate and parse partition table properly. This patch adds new mmc_bdev_to_part_type() helper which takes block device for the input and returns a corresponding MMC card partition ID (part_type). This is needed by tegra-partition parser in order to distinguish boot0 eMMC partition from boot1. Signed-off-by: Dmitry Osipenko --- drivers/mmc/core/block.c | 16 ++++++++++++++++ include/linux/mmc/blkdev.h | 1 + 2 files changed, 17 insertions(+) diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index 36d84a8e182c..2cee57c7388d 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -321,6 +321,22 @@ struct mmc_card *mmc_bdev_to_card(struct block_device *bdev) return md->queue.card; } +int mmc_bdev_to_part_type(struct block_device *bdev) +{ + struct mmc_blk_data *md; + struct mmc_card *card; + + card = mmc_bdev_to_card(bdev); + if (!card) + return -EINVAL; + + md = mmc_blk_get(bdev->bd_disk); + if (!md) + return -EINVAL; + + return md->part_type; +} + static int mmc_blk_open(struct block_device *bdev, fmode_t mode) { struct mmc_blk_data *md = mmc_blk_get(bdev->bd_disk); diff --git a/include/linux/mmc/blkdev.h b/include/linux/mmc/blkdev.h index 67608c58de70..24e73ac02b4b 100644 --- a/include/linux/mmc/blkdev.h +++ b/include/linux/mmc/blkdev.h @@ -9,5 +9,6 @@ struct block_device; struct mmc_card; struct mmc_card *mmc_bdev_to_card(struct block_device *bdev); +int mmc_bdev_to_part_type(struct block_device *bdev); #endif /* LINUX_MMC_BLOCK_DEVICE_H */