From: Daniel Golle <daniel@makrotopia.org> To: linux-block@vger.kernel.org, linux-efi@vger.kernel.org, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Tom Rini <trini@konsulko.com>, Jens Axboe <axboe@kernel.dk>, Davidlohr Bueso <dave@stgolabs.net>, Miquel Raynal <miquel.raynal@bootlin.com>, Richard Weinberger <richard@nod.at>, Vignesh Raghavendra <vigneshr@ti.com>, Masahiro Yamada <masahiroy@kernel.org> Subject: [PATCH v3 4/5] mtd_blkdevs: add option to enable scanning for partitions Date: Thu, 12 May 2022 20:39:27 +0100 [thread overview] Message-ID: <Yn1ibyUeXZttNX2a@makrotopia.org> (raw) Add Kconfig boolean CONFIG_MTD_BLOCK_PARTITIONS and enable block partition parsers on non-NAND mtdblock devices in case it is selected. Signed-off-by: Daniel Golle <daniel@makrotopia.org> --- drivers/mtd/Kconfig | 11 +++++++++++ drivers/mtd/mtd_blkdevs.c | 4 +++- 2 files changed, 14 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig index 796a2eccbef0b8..12874dec15692a 100644 --- a/drivers/mtd/Kconfig +++ b/drivers/mtd/Kconfig @@ -69,6 +69,17 @@ config MTD_BLOCK_RO You do not need this option for use with the DiskOnChip devices. For those, enable NFTL support (CONFIG_NFTL) instead. +config MTD_BLOCK_PARTITIONS + bool "Scan for partitions on MTD block devices" + depends on MTD_BLOCK || MTD_BLOCK_RO + default y if FIT_PARTITION + help + Scan MTD block devices for partitions (ie. MBR, GPT, uImage.FIT, ...). + (NAND devices are omitted, ubiblock should be used instead when) + + Unless your MTD partitions contain sub-partitions mapped using a + partition table, say no. + comment "Note that in some cases UBI block is preferred. See MTD_UBI_BLOCK." depends on MTD_BLOCK || MTD_BLOCK_RO diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index f7317211146550..c67ce2e6fbeb0a 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -359,7 +359,9 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new) } else { snprintf(gd->disk_name, sizeof(gd->disk_name), "%s%d", tr->name, new->devnum); - gd->flags |= GENHD_FL_NO_PART; + + if (!IS_ENABLED(CONFIG_MTD_BLOCK_PARTITIONS) || mtd_type_is_nand(new->mtd)) + gd->flags |= GENHD_FL_NO_PART; } set_capacity(gd, ((u64)new->size * tr->blksize) >> 9); -- 2.36.0
WARNING: multiple messages have this Message-ID (diff)
From: Daniel Golle <daniel@makrotopia.org> To: linux-block@vger.kernel.org, linux-efi@vger.kernel.org, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Tom Rini <trini@konsulko.com>, Jens Axboe <axboe@kernel.dk>, Davidlohr Bueso <dave@stgolabs.net>, Miquel Raynal <miquel.raynal@bootlin.com>, Richard Weinberger <richard@nod.at>, Vignesh Raghavendra <vigneshr@ti.com>, Masahiro Yamada <masahiroy@kernel.org> Subject: [PATCH v3 4/5] mtd_blkdevs: add option to enable scanning for partitions Date: Thu, 12 May 2022 20:39:27 +0100 [thread overview] Message-ID: <Yn1ibyUeXZttNX2a@makrotopia.org> (raw) Add Kconfig boolean CONFIG_MTD_BLOCK_PARTITIONS and enable block partition parsers on non-NAND mtdblock devices in case it is selected. Signed-off-by: Daniel Golle <daniel@makrotopia.org> --- drivers/mtd/Kconfig | 11 +++++++++++ drivers/mtd/mtd_blkdevs.c | 4 +++- 2 files changed, 14 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig index 796a2eccbef0b8..12874dec15692a 100644 --- a/drivers/mtd/Kconfig +++ b/drivers/mtd/Kconfig @@ -69,6 +69,17 @@ config MTD_BLOCK_RO You do not need this option for use with the DiskOnChip devices. For those, enable NFTL support (CONFIG_NFTL) instead. +config MTD_BLOCK_PARTITIONS + bool "Scan for partitions on MTD block devices" + depends on MTD_BLOCK || MTD_BLOCK_RO + default y if FIT_PARTITION + help + Scan MTD block devices for partitions (ie. MBR, GPT, uImage.FIT, ...). + (NAND devices are omitted, ubiblock should be used instead when) + + Unless your MTD partitions contain sub-partitions mapped using a + partition table, say no. + comment "Note that in some cases UBI block is preferred. See MTD_UBI_BLOCK." depends on MTD_BLOCK || MTD_BLOCK_RO diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index f7317211146550..c67ce2e6fbeb0a 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -359,7 +359,9 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new) } else { snprintf(gd->disk_name, sizeof(gd->disk_name), "%s%d", tr->name, new->devnum); - gd->flags |= GENHD_FL_NO_PART; + + if (!IS_ENABLED(CONFIG_MTD_BLOCK_PARTITIONS) || mtd_type_is_nand(new->mtd)) + gd->flags |= GENHD_FL_NO_PART; } set_capacity(gd, ((u64)new->size * tr->blksize) >> 9); -- 2.36.0 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/
next reply other threads:[~2022-05-12 19:39 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-05-12 19:39 Daniel Golle [this message] 2022-05-12 19:39 ` [PATCH v3 4/5] mtd_blkdevs: add option to enable scanning for partitions Daniel Golle 2022-06-03 13:48 ` Miquel Raynal 2022-06-03 13:48 ` Miquel Raynal 2022-06-07 0:42 ` Daniel Golle 2022-06-07 0:42 ` Daniel Golle
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