* direct dma. else, set up kernel bounce buffers
*/
uaddr = (unsigned long) ubuf;
- if (!(uaddr & queue_dma_alignment(q)) && !(len & queue_dma_alignment(q)))
+ if (!(uaddr & queue_dma_alignment(q)) &&
+ !(len & queue_dma_alignment(q)))
bio = bio_map_user(q, NULL, uaddr, len, reading);
else
bio = bio_copy_user(q, uaddr, len, reading);
return 0;
unmap_rq:
blk_rq_unmap_user(bio);
+ rq->bio = NULL;
return ret;
}
-
EXPORT_SYMBOL(blk_rq_map_user);
/**
/* we don't allow misaligned data like bio_map_user() does. If the
* user is using sg, they're expected to know the alignment constraints
* and respect them accordingly */
- bio = bio_map_user_iov(q, NULL, iov, iov_count, rq_data_dir(rq)== READ);
+ bio = bio_map_user_iov(q, NULL, iov, iov_count,
+ rq_data_dir(rq) == READ);
if (IS_ERR(bio))
return PTR_ERR(bio);
rq->buffer = rq->data = NULL;
return 0;
}
-
EXPORT_SYMBOL(blk_rq_map_user_iov);
/**
return ret;
}
-
EXPORT_SYMBOL(blk_rq_unmap_user);
/**
rq->buffer = rq->data = NULL;
return 0;
}
-
EXPORT_SYMBOL(blk_rq_map_kern);