TononixOS/ubports_kernel_google_msm
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mmc_block: Allow more than 8 partitions per card

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Set the GENHD_FL_EXT_DEVT flag, which will allocate minor numbers
in major 259 for partitions past disk->minors.

Also remove the use of disk_devt to determine devidx from md->disk.
md->disk->first_minor is always initialized from devidx and can
always be used to recover it.

Signed-off-by: Colin Cross <ccross@android.com>
This commit is contained in:
Colin Cross
2010-09-03 12:41:21 -07:00
parent ba04afb18c
commit 71b54d4483
1 changed files with 2 additions and 5 deletions
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7
drivers/mmc/card/block.c
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@@ -143,11 +143,7 @@ static struct mmc_blk_data *mmc_blk_get(struct gendisk *disk)
static inline int mmc_get_devidx(struct gendisk *disk)
{
int devmaj = MAJOR(disk_devt(disk));
int devidx = MINOR(disk_devt(disk)) / perdev_minors;
if (!devmaj)
devidx = disk->first_minor / perdev_minors;
int devidx = disk->first_minor / perdev_minors;
return devidx;
}
@@ -1500,6 +1496,7 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card,
md->disk->queue = md->queue.queue;
md->disk->driverfs_dev = parent;
set_disk_ro(md->disk, md->read_only || default_ro);
md->disk->flags = GENHD_FL_EXT_DEVT;
/*
* As discussed on lkml, GENHD_FL_REMOVABLE should: