| /linux-6.1.9/drivers/media/mc/ |
| D | mc-request.c | 39 static void media_request_clean(struct media_request *req) in media_request_clean() argument
44 WARN_ON(req->state != MEDIA_REQUEST_STATE_CLEANING); in media_request_clean()
45 WARN_ON(req->updating_count); in media_request_clean()
46 WARN_ON(req->access_count); in media_request_clean()
48 list_for_each_entry_safe(obj, obj_safe, &req->objects, list) { in media_request_clean()
53 req->updating_count = 0; in media_request_clean()
54 req->access_count = 0; in media_request_clean()
55 WARN_ON(req->num_incomplete_objects); in media_request_clean()
56 req->num_incomplete_objects = 0; in media_request_clean()
57 wake_up_interruptible_all(&req->poll_wait); in media_request_clean()
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| /linux-6.1.9/drivers/s390/scsi/ |
| D | zfcp_fsf.c | 80 static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req) in zfcp_fsf_class_not_supp() argument
82 dev_err(&req->adapter->ccw_device->dev, "FCP device not " in zfcp_fsf_class_not_supp()
84 zfcp_erp_adapter_shutdown(req->adapter, 0, "fscns_1"); in zfcp_fsf_class_not_supp()
85 req->status |= ZFCP_STATUS_FSFREQ_ERROR; in zfcp_fsf_class_not_supp()
92 void zfcp_fsf_req_free(struct zfcp_fsf_req *req) in zfcp_fsf_req_free() argument
94 if (likely(req->pool)) { in zfcp_fsf_req_free()
95 if (likely(!zfcp_fsf_req_is_status_read_buffer(req))) in zfcp_fsf_req_free()
96 mempool_free(req->qtcb, req->adapter->pool.qtcb_pool); in zfcp_fsf_req_free()
97 mempool_free(req, req->pool); in zfcp_fsf_req_free()
101 if (likely(!zfcp_fsf_req_is_status_read_buffer(req))) in zfcp_fsf_req_free()
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| /linux-6.1.9/drivers/staging/greybus/ |
| D | audio_apbridgea.c | 16 struct audio_apbridgea_set_config_request req; in gb_audio_apbridgea_set_config() local
18 req.hdr.type = AUDIO_APBRIDGEA_TYPE_SET_CONFIG; in gb_audio_apbridgea_set_config()
19 req.hdr.i2s_port = cpu_to_le16(i2s_port); in gb_audio_apbridgea_set_config()
20 req.format = cpu_to_le32(format); in gb_audio_apbridgea_set_config()
21 req.rate = cpu_to_le32(rate); in gb_audio_apbridgea_set_config()
22 req.mclk_freq = cpu_to_le32(mclk_freq); in gb_audio_apbridgea_set_config()
24 return gb_hd_output(connection->hd, &req, sizeof(req), in gb_audio_apbridgea_set_config()
33 struct audio_apbridgea_register_cport_request req; in gb_audio_apbridgea_register_cport() local
36 req.hdr.type = AUDIO_APBRIDGEA_TYPE_REGISTER_CPORT; in gb_audio_apbridgea_register_cport()
37 req.hdr.i2s_port = cpu_to_le16(i2s_port); in gb_audio_apbridgea_register_cport()
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| D | audio_gb.c | 50 struct gb_audio_get_control_request req; in gb_audio_gb_get_control() local
54 req.control_id = control_id; in gb_audio_gb_get_control()
55 req.index = index; in gb_audio_gb_get_control()
58 &req, sizeof(req), &resp, sizeof(resp)); in gb_audio_gb_get_control()
72 struct gb_audio_set_control_request req; in gb_audio_gb_set_control() local
74 req.control_id = control_id; in gb_audio_gb_set_control()
75 req.index = index; in gb_audio_gb_set_control()
76 memcpy(&req.value, value, sizeof(req.value)); in gb_audio_gb_set_control()
79 &req, sizeof(req), NULL, 0); in gb_audio_gb_set_control()
86 struct gb_audio_enable_widget_request req; in gb_audio_gb_enable_widget() local
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| /linux-6.1.9/drivers/nvme/target/ |
| D | admin-cmd.c | 28 static u32 nvmet_feat_data_len(struct nvmet_req *req, u32 cdw10) in nvmet_feat_data_len() argument
32 return sizeof(req->sq->ctrl->hostid); in nvmet_feat_data_len()
43 static void nvmet_execute_get_log_page_noop(struct nvmet_req *req) in nvmet_execute_get_log_page_noop() argument
45 nvmet_req_complete(req, nvmet_zero_sgl(req, 0, req->transfer_len)); in nvmet_execute_get_log_page_noop()
48 static void nvmet_execute_get_log_page_error(struct nvmet_req *req) in nvmet_execute_get_log_page_error() argument
50 struct nvmet_ctrl *ctrl = req->sq->ctrl; in nvmet_execute_get_log_page_error()
60 if (nvmet_copy_to_sgl(req, offset, &ctrl->slots[slot], in nvmet_execute_get_log_page_error()
71 nvmet_req_complete(req, 0); in nvmet_execute_get_log_page_error()
74 static u16 nvmet_get_smart_log_nsid(struct nvmet_req *req, in nvmet_get_smart_log_nsid() argument
80 status = nvmet_req_find_ns(req); in nvmet_get_smart_log_nsid()
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| D | io-cmd-file.c | 83 static ssize_t nvmet_file_submit_bvec(struct nvmet_req *req, loff_t pos, in nvmet_file_submit_bvec() argument
86 struct kiocb *iocb = &req->f.iocb; in nvmet_file_submit_bvec()
91 if (req->cmd->rw.opcode == nvme_cmd_write) { in nvmet_file_submit_bvec()
92 if (req->cmd->rw.control & cpu_to_le16(NVME_RW_FUA)) in nvmet_file_submit_bvec()
94 call_iter = req->ns->file->f_op->write_iter; in nvmet_file_submit_bvec()
97 call_iter = req->ns->file->f_op->read_iter; in nvmet_file_submit_bvec()
101 iov_iter_bvec(&iter, rw, req->f.bvec, nr_segs, count); in nvmet_file_submit_bvec()
104 iocb->ki_filp = req->ns->file; in nvmet_file_submit_bvec()
112 struct nvmet_req *req = container_of(iocb, struct nvmet_req, f.iocb); in nvmet_file_io_done() local
115 if (req->f.bvec != req->inline_bvec) { in nvmet_file_io_done()
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| D | fabrics-cmd-auth.c | 34 static u16 nvmet_auth_negotiate(struct nvmet_req *req, void *d) in nvmet_auth_negotiate() argument
36 struct nvmet_ctrl *ctrl = req->sq->ctrl; in nvmet_auth_negotiate()
41 __func__, ctrl->cntlid, req->sq->qid, in nvmet_auth_negotiate()
45 req->sq->dhchap_tid = le16_to_cpu(data->t_id); in nvmet_auth_negotiate()
70 __func__, ctrl->cntlid, req->sq->qid); in nvmet_auth_negotiate()
74 __func__, ctrl->cntlid, req->sq->qid, in nvmet_auth_negotiate()
98 __func__, ctrl->cntlid, req->sq->qid); in nvmet_auth_negotiate()
102 __func__, ctrl->cntlid, req->sq->qid, in nvmet_auth_negotiate()
107 __func__, ctrl->cntlid, req->sq->qid, in nvmet_auth_negotiate()
112 static u16 nvmet_auth_reply(struct nvmet_req *req, void *d) in nvmet_auth_reply() argument
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| D | zns.c | 73 void nvmet_execute_identify_cns_cs_ctrl(struct nvmet_req *req) in nvmet_execute_identify_cns_cs_ctrl() argument
75 u8 zasl = req->sq->ctrl->subsys->zasl; in nvmet_execute_identify_cns_cs_ctrl()
76 struct nvmet_ctrl *ctrl = req->sq->ctrl; in nvmet_execute_identify_cns_cs_ctrl()
91 status = nvmet_copy_to_sgl(req, 0, id, sizeof(*id)); in nvmet_execute_identify_cns_cs_ctrl()
95 nvmet_req_complete(req, status); in nvmet_execute_identify_cns_cs_ctrl()
98 void nvmet_execute_identify_cns_cs_ns(struct nvmet_req *req) in nvmet_execute_identify_cns_cs_ns() argument
105 if (le32_to_cpu(req->cmd->identify.nsid) == NVME_NSID_ALL) { in nvmet_execute_identify_cns_cs_ns()
106 req->error_loc = offsetof(struct nvme_identify, nsid); in nvmet_execute_identify_cns_cs_ns()
117 status = nvmet_req_find_ns(req); in nvmet_execute_identify_cns_cs_ns()
121 if (!bdev_is_zoned(req->ns->bdev)) { in nvmet_execute_identify_cns_cs_ns()
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| D | io-cmd-bdev.c | 122 u16 blk_to_nvme_status(struct nvmet_req *req, blk_status_t blk_sts) in blk_to_nvme_status() argument
137 req->error_loc = offsetof(struct nvme_rw_command, length); in blk_to_nvme_status()
141 req->error_loc = offsetof(struct nvme_rw_command, slba); in blk_to_nvme_status()
144 req->error_loc = offsetof(struct nvme_common_command, opcode); in blk_to_nvme_status()
145 switch (req->cmd->common.opcode) { in blk_to_nvme_status()
156 req->error_loc = offsetof(struct nvme_rw_command, nsid); in blk_to_nvme_status()
161 req->error_loc = offsetof(struct nvme_common_command, opcode); in blk_to_nvme_status()
164 switch (req->cmd->common.opcode) { in blk_to_nvme_status()
167 req->error_slba = le64_to_cpu(req->cmd->rw.slba); in blk_to_nvme_status()
170 req->error_slba = in blk_to_nvme_status()
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| D | fabrics-cmd.c | 10 static void nvmet_execute_prop_set(struct nvmet_req *req) in nvmet_execute_prop_set() argument
12 u64 val = le64_to_cpu(req->cmd->prop_set.value); in nvmet_execute_prop_set()
15 if (!nvmet_check_transfer_len(req, 0)) in nvmet_execute_prop_set()
18 if (req->cmd->prop_set.attrib & 1) { in nvmet_execute_prop_set()
19 req->error_loc = in nvmet_execute_prop_set()
25 switch (le32_to_cpu(req->cmd->prop_set.offset)) { in nvmet_execute_prop_set()
27 nvmet_update_cc(req->sq->ctrl, val); in nvmet_execute_prop_set()
30 req->error_loc = in nvmet_execute_prop_set()
35 nvmet_req_complete(req, status); in nvmet_execute_prop_set()
38 static void nvmet_execute_prop_get(struct nvmet_req *req) in nvmet_execute_prop_get() argument
[all …]
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| /linux-6.1.9/io_uring/ |
| D | poll.c | 34 struct io_kiocb *req; member
68 static bool io_poll_get_ownership_slowpath(struct io_kiocb *req) in io_poll_get_ownership_slowpath() argument
77 v = atomic_fetch_or(IO_POLL_RETRY_FLAG, &req->poll_refs); in io_poll_get_ownership_slowpath()
80 return !(atomic_fetch_inc(&req->poll_refs) & IO_POLL_REF_MASK); in io_poll_get_ownership_slowpath()
89 static inline bool io_poll_get_ownership(struct io_kiocb *req) in io_poll_get_ownership() argument
91 if (unlikely(atomic_read(&req->poll_refs) >= IO_POLL_REF_BIAS)) in io_poll_get_ownership()
92 return io_poll_get_ownership_slowpath(req); in io_poll_get_ownership()
93 return !(atomic_fetch_inc(&req->poll_refs) & IO_POLL_REF_MASK); in io_poll_get_ownership()
96 static void io_poll_mark_cancelled(struct io_kiocb *req) in io_poll_mark_cancelled() argument
98 atomic_or(IO_POLL_CANCEL_FLAG, &req->poll_refs); in io_poll_mark_cancelled()
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| D | rw.c | 31 static inline bool io_file_supports_nowait(struct io_kiocb *req) in io_file_supports_nowait() argument
33 return req->flags & REQ_F_SUPPORT_NOWAIT; in io_file_supports_nowait()
55 static int io_iov_buffer_select_prep(struct io_kiocb *req) in io_iov_buffer_select_prep() argument
59 struct io_rw *rw = io_kiocb_to_cmd(req, struct io_rw); in io_iov_buffer_select_prep()
65 if (req->ctx->compat) in io_iov_buffer_select_prep()
76 int io_prep_rw(struct io_kiocb *req, const struct io_uring_sqe *sqe) in io_prep_rw() argument
78 struct io_rw *rw = io_kiocb_to_cmd(req, struct io_rw); in io_prep_rw()
84 req->buf_index = READ_ONCE(sqe->buf_index); in io_prep_rw()
86 if (req->opcode == IORING_OP_READ_FIXED || in io_prep_rw()
87 req->opcode == IORING_OP_WRITE_FIXED) { in io_prep_rw()
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| D | kbuf.h | 36 void __user *io_buffer_select(struct io_kiocb *req, size_t *len,
40 int io_remove_buffers_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
41 int io_remove_buffers(struct io_kiocb *req, unsigned int issue_flags);
43 int io_provide_buffers_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
44 int io_provide_buffers(struct io_kiocb *req, unsigned int issue_flags);
49 unsigned int __io_put_kbuf(struct io_kiocb *req, unsigned issue_flags);
51 void io_kbuf_recycle_legacy(struct io_kiocb *req, unsigned issue_flags);
53 static inline void io_kbuf_recycle_ring(struct io_kiocb *req) in io_kbuf_recycle_ring() argument
62 if (req->buf_list) { in io_kbuf_recycle_ring()
63 if (req->flags & REQ_F_PARTIAL_IO) { in io_kbuf_recycle_ring()
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| D | timeout.c | 37 static inline bool io_is_timeout_noseq(struct io_kiocb *req) in io_is_timeout_noseq() argument
39 struct io_timeout *timeout = io_kiocb_to_cmd(req, struct io_timeout); in io_is_timeout_noseq()
44 static inline void io_put_req(struct io_kiocb *req) in io_put_req() argument
46 if (req_ref_put_and_test(req)) { in io_put_req()
47 io_queue_next(req); in io_put_req()
48 io_free_req(req); in io_put_req()
52 static bool io_kill_timeout(struct io_kiocb *req, int status) in io_kill_timeout() argument
53 __must_hold(&req->ctx->completion_lock) in io_kill_timeout()
54 __must_hold(&req->ctx->timeout_lock) in io_kill_timeout()
56 struct io_timeout_data *io = req->async_data; in io_kill_timeout()
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| D | uring_cmd.c | 15 static void io_uring_cmd_work(struct io_kiocb *req, bool *locked) in io_uring_cmd_work() argument
17 struct io_uring_cmd *ioucmd = io_kiocb_to_cmd(req, struct io_uring_cmd); in io_uring_cmd_work()
25 struct io_kiocb *req = cmd_to_io_kiocb(ioucmd); in io_uring_cmd_complete_in_task() local
28 req->io_task_work.func = io_uring_cmd_work; in io_uring_cmd_complete_in_task()
29 io_req_task_work_add(req); in io_uring_cmd_complete_in_task()
33 static inline void io_req_set_cqe32_extra(struct io_kiocb *req, in io_req_set_cqe32_extra() argument
36 req->extra1 = extra1; in io_req_set_cqe32_extra()
37 req->extra2 = extra2; in io_req_set_cqe32_extra()
38 req->flags |= REQ_F_CQE32_INIT; in io_req_set_cqe32_extra()
47 struct io_kiocb *req = cmd_to_io_kiocb(ioucmd); in io_uring_cmd_done() local
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| /linux-6.1.9/drivers/block/drbd/ |
| D | drbd_req.c | 26 struct drbd_request *req; in drbd_req_new() local
28 req = mempool_alloc(&drbd_request_mempool, GFP_NOIO); in drbd_req_new()
29 if (!req) in drbd_req_new()
31 memset(req, 0, sizeof(*req)); in drbd_req_new()
33 req->rq_state = (bio_data_dir(bio_src) == WRITE ? RQ_WRITE : 0) in drbd_req_new()
36 req->device = device; in drbd_req_new()
37 req->master_bio = bio_src; in drbd_req_new()
38 req->epoch = 0; in drbd_req_new()
40 drbd_clear_interval(&req->i); in drbd_req_new()
41 req->i.sector = bio_src->bi_iter.bi_sector; in drbd_req_new()
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| /linux-6.1.9/drivers/net/ethernet/marvell/octeontx2/af/ |
| D | mcs_rvu_if.c | 20 struct _req_type *req; \
22 req = (struct _req_type *)otx2_mbox_alloc_msg_rsp( \
25 if (!req) \
27 req->hdr.sig = OTX2_MBOX_REQ_SIG; \
28 req->hdr.id = _id; \
29 return req; \
36 struct mcs_set_lmac_mode *req, in rvu_mbox_handler_mcs_set_lmac_mode() argument
41 if (req->mcs_id >= rvu->mcs_blk_cnt) in rvu_mbox_handler_mcs_set_lmac_mode()
44 mcs = mcs_get_pdata(req->mcs_id); in rvu_mbox_handler_mcs_set_lmac_mode()
46 if (BIT_ULL(req->lmac_id) & mcs->hw->lmac_bmap) in rvu_mbox_handler_mcs_set_lmac_mode()
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| /linux-6.1.9/net/sunrpc/ |
| D | backchannel_rqst.c | 40 static void xprt_free_allocation(struct rpc_rqst *req) in xprt_free_allocation() argument
44 dprintk("RPC: free allocations for req= %p\n", req); in xprt_free_allocation()
45 WARN_ON_ONCE(test_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state)); in xprt_free_allocation()
46 xbufp = &req->rq_rcv_buf; in xprt_free_allocation()
48 xbufp = &req->rq_snd_buf; in xprt_free_allocation()
50 kfree(req); in xprt_free_allocation()
78 struct rpc_rqst *req; in xprt_alloc_bc_req() local
81 req = kzalloc(sizeof(*req), gfp_flags); in xprt_alloc_bc_req()
82 if (req == NULL) in xprt_alloc_bc_req()
85 req->rq_xprt = xprt; in xprt_alloc_bc_req()
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| /linux-6.1.9/drivers/peci/ |
| D | request.c | 88 static u8 peci_request_data_cc(struct peci_request *req) in peci_request_data_cc() argument
90 return req->rx.buf[0]; in peci_request_data_cc()
102 int peci_request_status(struct peci_request *req) in peci_request_status() argument
104 u8 cc = peci_request_data_cc(req); in peci_request_status()
107 dev_dbg(&req->device->dev, "ret: %#02x\n", cc); in peci_request_status()
133 static int peci_request_xfer(struct peci_request *req) in peci_request_xfer() argument
135 struct peci_device *device = req->device; in peci_request_xfer()
140 ret = controller->ops->xfer(controller, device->addr, req); in peci_request_xfer()
146 static int peci_request_xfer_retry(struct peci_request *req) in peci_request_xfer_retry() argument
149 struct peci_device *device = req->device; in peci_request_xfer_retry()
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| /linux-6.1.9/crypto/ |
| D | chacha20poly1305.c | 42 struct ahash_request req; /* must be last member */ member
48 struct skcipher_request req; /* must be last member */ member
70 static inline void async_done_continue(struct aead_request *req, int err, in async_done_continue() argument
74 struct chachapoly_req_ctx *rctx = aead_request_ctx(req); in async_done_continue()
77 err = cont(req); in async_done_continue()
81 aead_request_complete(req, err); in async_done_continue()
84 static void chacha_iv(u8 *iv, struct aead_request *req, u32 icb) in chacha_iv() argument
86 struct chachapoly_ctx *ctx = crypto_aead_ctx(crypto_aead_reqtfm(req)); in chacha_iv()
91 memcpy(iv + sizeof(leicb) + ctx->saltlen, req->iv, in chacha_iv()
95 static int poly_verify_tag(struct aead_request *req) in poly_verify_tag() argument
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| D | seqiv.c | 21 static void seqiv_aead_encrypt_complete2(struct aead_request *req, int err) in seqiv_aead_encrypt_complete2() argument
23 struct aead_request *subreq = aead_request_ctx(req); in seqiv_aead_encrypt_complete2()
32 geniv = crypto_aead_reqtfm(req); in seqiv_aead_encrypt_complete2()
33 memcpy(req->iv, subreq->iv, crypto_aead_ivsize(geniv)); in seqiv_aead_encrypt_complete2()
42 struct aead_request *req = base->data; in seqiv_aead_encrypt_complete() local
44 seqiv_aead_encrypt_complete2(req, err); in seqiv_aead_encrypt_complete()
45 aead_request_complete(req, err); in seqiv_aead_encrypt_complete()
48 static int seqiv_aead_encrypt(struct aead_request *req) in seqiv_aead_encrypt() argument
50 struct crypto_aead *geniv = crypto_aead_reqtfm(req); in seqiv_aead_encrypt()
52 struct aead_request *subreq = aead_request_ctx(req); in seqiv_aead_encrypt()
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| /linux-6.1.9/drivers/infiniband/hw/hfi1/ |
| D | user_sdma.c | 39 static int user_sdma_send_pkts(struct user_sdma_request *req, u16 maxpkts);
42 static void user_sdma_free_request(struct user_sdma_request *req, bool unpin);
43 static int pin_vector_pages(struct user_sdma_request *req,
47 static int check_header_template(struct user_sdma_request *req,
50 static int set_txreq_header(struct user_sdma_request *req,
52 static int set_txreq_header_ahg(struct user_sdma_request *req,
314 struct user_sdma_request *req; in hfi1_user_sdma_process_request() local
321 if (iovec[idx].iov_len < sizeof(info) + sizeof(req->hdr)) { in hfi1_user_sdma_process_request()
326 iovec[idx].iov_len, sizeof(info) + sizeof(req->hdr)); in hfi1_user_sdma_process_request()
376 req = pq->reqs + info.comp_idx; in hfi1_user_sdma_process_request()
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| /linux-6.1.9/drivers/clk/sunxi/ |
| D | clk-sunxi.c | 33 static void sun4i_get_pll1_factors(struct factors_request *req) in sun4i_get_pll1_factors() argument
38 div = req->rate / 6000000; in sun4i_get_pll1_factors()
39 req->rate = 6000000 * div; in sun4i_get_pll1_factors()
42 req->m = 0; in sun4i_get_pll1_factors()
45 if (req->rate >= 768000000 || req->rate == 42000000 || in sun4i_get_pll1_factors()
46 req->rate == 54000000) in sun4i_get_pll1_factors()
47 req->k = 1; in sun4i_get_pll1_factors()
49 req->k = 0; in sun4i_get_pll1_factors()
53 req->p = 3; in sun4i_get_pll1_factors()
57 req->p = 2; in sun4i_get_pll1_factors()
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| /linux-6.1.9/arch/powerpc/platforms/52xx/ |
| D | mpc52xx_lpbfifo.c | 53 struct mpc52xx_lpbfifo_request *req; member
63 static void mpc52xx_lpbfifo_kick(struct mpc52xx_lpbfifo_request *req) in mpc52xx_lpbfifo_kick() argument
65 size_t transfer_size = req->size - req->pos; in mpc52xx_lpbfifo_kick()
71 int dma = !(req->flags & MPC52XX_LPBFIFO_FLAG_NO_DMA); in mpc52xx_lpbfifo_kick()
72 int write = req->flags & MPC52XX_LPBFIFO_FLAG_WRITE; in mpc52xx_lpbfifo_kick()
73 int poll_dma = req->flags & MPC52XX_LPBFIFO_FLAG_POLL_DMA; in mpc52xx_lpbfifo_kick()
96 data = req->data + req->pos; in mpc52xx_lpbfifo_kick()
150 bd->data[0] = req->data_phys + req->pos; in mpc52xx_lpbfifo_kick()
164 req->offset + req->pos); in mpc52xx_lpbfifo_kick()
167 bit_fields = req->cs << 24 | 0x000008; in mpc52xx_lpbfifo_kick()
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| /linux-6.1.9/drivers/s390/cio/ |
| D | ccwreq.c | 43 struct ccw_request *req = &cdev->private->req; in ccwreq_next_path() local
45 if (!req->singlepath) { in ccwreq_next_path()
46 req->mask = 0; in ccwreq_next_path()
49 req->retries = req->maxretries; in ccwreq_next_path()
50 req->mask = lpm_adjust(req->mask >> 1, req->lpm); in ccwreq_next_path()
52 return req->mask; in ccwreq_next_path()
60 struct ccw_request *req = &cdev->private->req; in ccwreq_stop() local
62 if (req->done) in ccwreq_stop()
64 req->done = 1; in ccwreq_stop()
67 if (rc && rc != -ENODEV && req->drc) in ccwreq_stop()
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