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Commit d3ad0aa4 authored by Jens Axboe's avatar Jens Axboe
Browse files

mmc: need to zero sglist on init



Otherwise we could have junk in the sg fields, fooling
the sg chaining into thinking ->page is valid.

Acked-by: default avatarPierre Ossman <drzeus@drzeus.cx>
Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent a683d652
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+3 −3
Original line number Diff line number Diff line
@@ -153,14 +153,14 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card, spinlock_t *lock
			blk_queue_max_hw_segments(mq->queue, bouncesz / 512);
			blk_queue_max_segment_size(mq->queue, bouncesz);

			mq->sg = kmalloc(sizeof(struct scatterlist),
			mq->sg = kzalloc(sizeof(struct scatterlist),
				GFP_KERNEL);
			if (!mq->sg) {
				ret = -ENOMEM;
				goto cleanup_queue;
			}

			mq->bounce_sg = kmalloc(sizeof(struct scatterlist) *
			mq->bounce_sg = kzalloc(sizeof(struct scatterlist) *
				bouncesz / 512, GFP_KERNEL);
			if (!mq->bounce_sg) {
				ret = -ENOMEM;
@@ -177,7 +177,7 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card, spinlock_t *lock
		blk_queue_max_hw_segments(mq->queue, host->max_hw_segs);
		blk_queue_max_segment_size(mq->queue, host->max_seg_size);

		mq->sg = kmalloc(sizeof(struct scatterlist) *
		mq->sg = kzalloc(sizeof(struct scatterlist) *
			host->max_phys_segs, GFP_KERNEL);
		if (!mq->sg) {
			ret = -ENOMEM;