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[MMC] Add DATA_MULTI flag

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Some hosts need to know that a transfer will be multi-block.
Add a data flag to indicate multiple data block transfers.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2006-01-09 21:12:17 +00:00 committed by Russell King
parent cfa7f52164
commit 788ee7b098
2 changed files with 8 additions and 1 deletions
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8
drivers/mmc/mmc_block.c
View file

@ -200,7 +200,13 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
brq.data.flags |= MMC_DATA_WRITE; brq.data.flags |= MMC_DATA_WRITE;
brq.data.blocks = 1; brq.data.blocks = 1;
} }
brq.mrq.stop = brq.data.blocks > 1 ? &brq.stop : NULL;
if (brq.data.blocks > 1) {
brq.data.flags |= MMC_DATA_MULTI;
brq.mrq.stop = &brq.stop;
} else {
brq.mrq.stop = NULL;
}
brq.data.sg = mq->sg; brq.data.sg = mq->sg;
brq.data.sg_len = blk_rq_map_sg(req->q, req, brq.data.sg); brq.data.sg_len = blk_rq_map_sg(req->q, req, brq.data.sg);

1
include/linux/mmc/mmc.h
View file

@ -64,6 +64,7 @@ struct mmc_data {
#define MMC_DATA_WRITE (1 << 8) #define MMC_DATA_WRITE (1 << 8)
#define MMC_DATA_READ (1 << 9) #define MMC_DATA_READ (1 << 9)
#define MMC_DATA_STREAM (1 << 10) #define MMC_DATA_STREAM (1 << 10)
#define MMC_DATA_MULTI (1 << 11)
unsigned int bytes_xfered; unsigned int bytes_xfered;