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Commit 163a4169 authored by Colin Cross's avatar Colin Cross Committed by Ruchi Kandoi
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mmc_block: Allow more than 8 partitions per card 



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: default avatarColin Cross <ccross@android.com>
parent c8e2b5b2

drivers/mmc/card/block.c

+2 −5
Original line number Diff line number Diff line
@@ -166,11 +166,7 @@ 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;

}
@@ -2136,6 +2132,7 @@ 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;

	if (area_type & (MMC_BLK_DATA_AREA_RPMB | MMC_BLK_DATA_AREA_BOOT))

		md->disk->flags |= GENHD_FL_NO_PART_SCAN;