From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Osipenko Subject: [PATCH v3 06/10] mmc: block: Add mmc_bdev_to_area_type() helper Date: Mon, 23 Mar 2020 19:34:27 +0300 Message-ID: <20200323163431.7678-7-digetx@gmail.com> References: <20200323163431.7678-1-digetx@gmail.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20200323163431.7678-1-digetx@gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: Jens Axboe , Thierry Reding , Jonathan Hunter , =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= , 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 List-Id: linux-tegra@vger.kernel.org NVIDIA Tegra Partition Table parser needs to know eMMC partition type in order to validate and parse partition table properly. This patch adds new mmc_bdev_to_area_type() helper which takes block device for the input and returns a corresponding MMC card partition type. This allows tegra-partition parser to distinguish boot eMMC partition from the main eMMC partition. 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 2cee57c7388d..ec69b613ee92 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -337,6 +337,22 @@ int mmc_bdev_to_part_type(struct block_device *bdev) return md->part_type; } +int mmc_bdev_to_area_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->area_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 24e73ac02b4b..5fa5ef35ac25 100644 --- a/include/linux/mmc/blkdev.h +++ b/include/linux/mmc/blkdev.h @@ -10,5 +10,6 @@ struct mmc_card; struct mmc_card *mmc_bdev_to_card(struct block_device *bdev); int mmc_bdev_to_part_type(struct block_device *bdev); +int mmc_bdev_to_area_type(struct block_device *bdev); #endif /* LINUX_MMC_BLOCK_DEVICE_H */ -- 2.25.1