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[79.139.233.37]) by smtp.gmail.com with ESMTPSA id r10sm8154071ljk.9.2020.02.24.15.22.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Feb 2020 15:22:12 -0800 (PST) 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 v1 2/3] mmc: block: Add mmc_bdev_to_card() helper Date: Tue, 25 Feb 2020 02:18:40 +0300 Message-Id: <20200224231841.26550-3-digetx@gmail.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20200224231841.26550-1-digetx@gmail.com> References: <20200224231841.26550-1-digetx@gmail.com> MIME-Version: 1.0 Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org NVIDIA Tegra Partition Table takes into account MMC card's BOOT_SIZE_MULT parameter, and thus, the partition parser needs to retrieve that EXT_CSD value from the block device. This patch introduces new helper which takes block device for the input argument and returns corresponding MMC card. Signed-off-by: Dmitry Osipenko --- drivers/mmc/core/block.c | 14 ++++++++++++++ include/linux/mmc/card.h | 3 +++ 2 files changed, 17 insertions(+) diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index 663d87924e5e..5d853450c764 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -301,6 +301,20 @@ static ssize_t force_ro_store(struct device *dev, struct device_attribute *attr, return ret; } +struct mmc_card *mmc_bdev_to_card(struct block_device *bdev) +{ + struct mmc_blk_data *md; + + if (bdev->bd_disk->major != MMC_BLOCK_MAJOR) + return NULL; + + md = mmc_blk_get(bdev->bd_disk); + if (!md) + return NULL; + + return md->queue.card; +} + 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/card.h b/include/linux/mmc/card.h index 90b1d83ce675..daccb0cc25f8 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -7,6 +7,7 @@ #ifndef LINUX_MMC_CARD_H #define LINUX_MMC_CARD_H +#include #include #include @@ -324,4 +325,6 @@ bool mmc_card_is_blockaddr(struct mmc_card *card); #define mmc_card_sd(c) ((c)->type == MMC_TYPE_SD) #define mmc_card_sdio(c) ((c)->type == MMC_TYPE_SDIO) +struct mmc_card *mmc_bdev_to_card(struct block_device *bdev); + #endif /* LINUX_MMC_CARD_H */