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Commit e877dedf authored May 22, 2018 by Veerabhadrarao Badiganti

mmc: card: Set INLINECRYPT queue flag based on host capability



Set INLINECRYPT queue flag if the host can support h/w based inline
encryption.

This is needed to let the filesystem know that underlying storage
device can support inline encryption so that data encryption/
decryption would be handled at h/w level, not at filesystem.

Change-Id: Iad029439b0867d5bfbd04e2474a71421ab3f3cf4
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>

parent 4719c01d

drivers/mmc/core/queue.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -208,6 +208,8 @@ void mmc_cmdq_setup_queue(struct mmc_queue mq, struct mmc_card card)
		host->max_req_size / 512));
		blk_queue_max_segment_size(mq->queue, host->max_seg_size);
		blk_queue_max_segments(mq->queue, host->max_segs);
		if (host->inlinecrypt_support)
		queue_flag_set_unlocked(QUEUE_FLAG_INLINECRYPT, mq->queue);
		}

		static struct scatterlist *mmc_alloc_sg(int sg_len, gfp_t gfp)
		@@ -464,6 +466,8 @@ int mmc_init_queue(struct mmc_queue mq, struct mmc_card card,
		min(host->max_blk_count, host->max_req_size / 512));
		blk_queue_max_segments(mq->queue, host->max_segs);
		blk_queue_max_segment_size(mq->queue, host->max_seg_size);
		if (host->inlinecrypt_support)
		queue_flag_set_unlocked(QUEUE_FLAG_INLINECRYPT, mq->queue);

		sema_init(&mq->thread_sem, 1);

include/linux/mmc/host.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -705,6 +705,8 @@ struct mmc_host {
		void *cmdq_private;
		struct mmc_request *err_mrq;

		bool inlinecrypt_support; /* Inline encryption support */

		atomic_t rpmb_req_pending;
		struct mutex rpmb_req_mutex;
		unsigned long private[0] ____cacheline_aligned;