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mtd_blkdevs: don't scan partitions for plain mtdblock 

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2066297

commit 17f81f9d4b41d57e474975c3a5ca2a2c4c01e2ec
Author: Christoph Hellwig <hch@lst.de>
Date:   Mon Dec 6 08:04:09 2021 +0100

    mtd_blkdevs: don't scan partitions for plain mtdblock

    mtdblock / mtdblock_ro set part_bits to 0 and thus nevever scanned
    partitions.  Restore that behavior by setting the GENHD_FL_NO_PART flag.

    Fixes: 1ebe2e5f9d68e94c ("block: remove GENHD_FL_EXT_DEVT")
    Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
    Signed-off-by: Christoph Hellwig <hch@lst.de>
    Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
    Link: https://lore.kernel.org/r/20211206070409.2836165-1-hch@lst.de
    Signed-off-by: Jens Axboe <axboe@kernel.dk>

Signed-off-by: Ming Lei <ming.lei@redhat.com>
This commit is contained in:
Ming Lei 2022-04-11 11:44:27 +08:00
parent 45d27b1396
commit df5a1dddb1
1 changed files with 4 additions and 2 deletions
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6
drivers/mtd/mtd_blkdevs.c
View File

@ -389,7 +389,7 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new)
gd->minors = 1 << tr->part_bits;
gd->fops = &mtd_block_ops;
if (tr->part_bits)
if (tr->part_bits) {
if (new->devnum < 26)
snprintf(gd->disk_name, sizeof(gd->disk_name),
"%s%c", tr->name, 'a' + new->devnum);
@ -398,9 +398,11 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new)
"%s%c%c", tr->name,
'a' - 1 + new->devnum / 26,
'a' + new->devnum % 26);
else
} else {
snprintf(gd->disk_name, sizeof(gd->disk_name),
"%s%d", tr->name, new->devnum);
gd->flags |= GENHD_FL_NO_PART;
}
set_capacity(gd, ((u64)new->size * tr->blksize) >> 9);