evie/android_kernel_oneplus_msm8998
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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 • committed by John Stultz
parent 3ad3ce2c5a
commit 2643e5366d
1 changed files with 2 additions and 5 deletions
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7
drivers/mmc/card/block.c
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@ -171,11 +171,7 @@ static struct mmc_blk_data *mmc_blk_get(struct gendisk *disk)
static inline int mmc_get_devidx(struct gendisk *disk) static inline int mmc_get_devidx(struct gendisk *disk)
{ {
int devmaj = MAJOR(disk_devt(disk)); int devidx = disk->first_minor / perdev_minors;
int devidx = MINOR(disk_devt(disk)) / perdev_minors;
if (!devmaj)
devidx = disk->first_minor / perdev_minors;
return devidx; return devidx;
} }
@ -2244,6 +2240,7 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card,
md->disk->queue = md->queue.queue; md->disk->queue = md->queue.queue;
md->disk->driverfs_dev = parent; md->disk->driverfs_dev = parent;
set_disk_ro(md->disk, md->read_only || default_ro); set_disk_ro(md->disk, md->read_only || default_ro);
md->disk->flags = GENHD_FL_EXT_DEVT;
if (area_type & (MMC_BLK_DATA_AREA_RPMB | MMC_BLK_DATA_AREA_BOOT)) if (area_type & (MMC_BLK_DATA_AREA_RPMB | MMC_BLK_DATA_AREA_BOOT))
md->disk->flags |= GENHD_FL_NO_PART_SCAN; md->disk->flags |= GENHD_FL_NO_PART_SCAN;