forked from rubenslte/android_kernel_samsung_msm8226
Pavan Anamula
31ab7dc66c
Under function mmc_blk_issue_rq, relese the host when there are no more requests after special request(discard, flush), To fix reboot stuck issue. Change-Id: Ie8d1024a4403ed8f8a3f6a2dfcd3874465b28c3b Signed-off-by: Pavan Anamula <pavana@codeaurora.org>
76 lines
2.0 KiB
C
76 lines
2.0 KiB
C
#ifndef MMC_QUEUE_H
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#define MMC_QUEUE_H
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#define MMC_REQ_SPECIAL_MASK (REQ_DISCARD | REQ_FLUSH)
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struct request;
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struct task_struct;
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struct mmc_blk_request {
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struct mmc_request mrq;
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struct mmc_command sbc;
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struct mmc_command cmd;
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struct mmc_command stop;
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struct mmc_data data;
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};
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enum mmc_packed_cmd {
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MMC_PACKED_NONE = 0,
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MMC_PACKED_WRITE,
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};
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struct mmc_queue_req {
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struct request *req;
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struct mmc_blk_request brq;
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struct scatterlist *sg;
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char *bounce_buf;
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struct scatterlist *bounce_sg;
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unsigned int bounce_sg_len;
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struct mmc_async_req mmc_active;
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struct list_head packed_list;
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u32 packed_cmd_hdr[128];
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unsigned int packed_blocks;
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enum mmc_packed_cmd packed_cmd;
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int packed_retries;
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int packed_fail_idx;
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u8 packed_num;
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};
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struct mmc_queue {
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struct mmc_card *card;
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struct task_struct *thread;
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struct semaphore thread_sem;
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unsigned long flags;
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#define MMC_QUEUE_SUSPENDED 0
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#define MMC_QUEUE_NEW_REQUEST 1
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#define MMC_QUEUE_URGENT_REQUEST 2
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int (*issue_fn)(struct mmc_queue *, struct request *);
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void *data;
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struct request_queue *queue;
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struct mmc_queue_req mqrq[2];
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struct mmc_queue_req *mqrq_cur;
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struct mmc_queue_req *mqrq_prev;
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bool wr_packing_enabled;
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int num_of_potential_packed_wr_reqs;
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int num_wr_reqs_to_start_packing;
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bool no_pack_for_random;
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int (*err_check_fn) (struct mmc_card *, struct mmc_async_req *);
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void (*packed_test_fn) (struct request_queue *, struct mmc_queue_req *);
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};
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extern int mmc_init_queue(struct mmc_queue *, struct mmc_card *, spinlock_t *,
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const char *);
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extern void mmc_cleanup_queue(struct mmc_queue *);
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extern int mmc_queue_suspend(struct mmc_queue *, int);
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extern void mmc_queue_resume(struct mmc_queue *);
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extern unsigned int mmc_queue_map_sg(struct mmc_queue *,
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struct mmc_queue_req *);
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extern void mmc_queue_bounce_pre(struct mmc_queue_req *);
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extern void mmc_queue_bounce_post(struct mmc_queue_req *);
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extern void print_mmc_packing_stats(struct mmc_card *card);
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#endif
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