| /linux-6.1.9/drivers/s390/cio/ |
| D | device_fsm.c | 37 static void ccw_timeout_log(struct ccw_device *cdev) in ccw_timeout_log() argument
45 sch = to_subchannel(cdev->dev.parent); in ccw_timeout_log()
56 dev_name(&cdev->dev)); in ccw_timeout_log()
73 cdev->private->dma_area->iccws) in ccw_timeout_log()
84 cdev->private->state); in ccw_timeout_log()
91 &cdev->private->flags, sizeof(cdev->private->flags), 0); in ccw_timeout_log()
101 struct ccw_device *cdev = priv->cdev; in ccw_device_timeout() local
103 spin_lock_irq(cdev->ccwlock); in ccw_device_timeout()
105 ccw_timeout_log(cdev); in ccw_device_timeout()
106 dev_fsm_event(cdev, DEV_EVENT_TIMEOUT); in ccw_device_timeout()
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| D | device.c | 63 struct ccw_device *cdev = to_ccwdev(dev); in ccw_bus_match() local
70 found = ccw_device_id_match(ids, &cdev->id); in ccw_bus_match()
74 cdev->id.driver_info = found->driver_info; in ccw_bus_match()
106 struct ccw_device *cdev = to_ccwdev(dev); in ccw_uevent() local
107 struct ccw_device_id *id = &(cdev->id); in ccw_uevent()
200 struct ccw_device *cdev = to_ccwdev(dev); in devtype_show() local
201 struct ccw_device_id *id = &(cdev->id); in devtype_show()
213 struct ccw_device *cdev = to_ccwdev(dev); in cutype_show() local
214 struct ccw_device_id *id = &(cdev->id); in cutype_show()
223 struct ccw_device *cdev = to_ccwdev(dev); in modalias_show() local
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| D | device_pgid.c | 28 static void verify_start(struct ccw_device *cdev);
33 static void verify_done(struct ccw_device *cdev, int rc) in verify_done() argument
35 struct subchannel *sch = to_subchannel(cdev->dev.parent); in verify_done()
36 struct ccw_dev_id *id = &cdev->private->dev_id; in verify_done()
37 int mpath = cdev->private->flags.mpath; in verify_done()
38 int pgroup = cdev->private->flags.pgroup; in verify_done()
51 ccw_device_verify_done(cdev, rc); in verify_done()
57 static void nop_build_cp(struct ccw_device *cdev) in nop_build_cp() argument
59 struct ccw_request *req = &cdev->private->req; in nop_build_cp()
60 struct ccw1 *cp = cdev->private->dma_area->iccws; in nop_build_cp()
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| D | device_ops.c | 39 int ccw_device_set_options_mask(struct ccw_device *cdev, unsigned long flags) in ccw_device_set_options_mask() argument
47 cdev->private->options.fast = (flags & CCWDEV_EARLY_NOTIFICATION) != 0; in ccw_device_set_options_mask()
48 cdev->private->options.repall = (flags & CCWDEV_REPORT_ALL) != 0; in ccw_device_set_options_mask()
49 cdev->private->options.pgroup = (flags & CCWDEV_DO_PATHGROUP) != 0; in ccw_device_set_options_mask()
50 cdev->private->options.force = (flags & CCWDEV_ALLOW_FORCE) != 0; in ccw_device_set_options_mask()
51 cdev->private->options.mpath = (flags & CCWDEV_DO_MULTIPATH) != 0; in ccw_device_set_options_mask()
64 int ccw_device_set_options(struct ccw_device *cdev, unsigned long flags) in ccw_device_set_options() argument
72 cdev->private->options.repall) || in ccw_device_set_options()
74 cdev->private->options.fast)) in ccw_device_set_options()
76 cdev->private->options.fast |= (flags & CCWDEV_EARLY_NOTIFICATION) != 0; in ccw_device_set_options()
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| D | ccwreq.c | 41 static u16 ccwreq_next_path(struct ccw_device *cdev) in ccwreq_next_path() argument
43 struct ccw_request *req = &cdev->private->req; in ccwreq_next_path()
58 static void ccwreq_stop(struct ccw_device *cdev, int rc) in ccwreq_stop() argument
60 struct ccw_request *req = &cdev->private->req; in ccwreq_stop()
65 ccw_device_set_timeout(cdev, 0); in ccwreq_stop()
66 memset(&cdev->private->dma_area->irb, 0, sizeof(struct irb)); in ccwreq_stop()
69 req->callback(cdev, req->data, rc); in ccwreq_stop()
75 static void ccwreq_do(struct ccw_device *cdev) in ccwreq_do() argument
77 struct ccw_request *req = &cdev->private->req; in ccwreq_do()
78 struct subchannel *sch = to_subchannel(cdev->dev.parent); in ccwreq_do()
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| D | cmf.c | 176 static int set_schib(struct ccw_device *cdev, u32 mme, int mbfc, in set_schib() argument
179 struct subchannel *sch = to_subchannel(cdev->dev.parent); in set_schib()
212 static int set_schib_wait(struct ccw_device *cdev, u32 mme, in set_schib_wait() argument
218 spin_lock_irq(cdev->ccwlock); in set_schib_wait()
219 if (!cdev->private->cmb) in set_schib_wait()
222 ret = set_schib(cdev, mme, mbfc, address); in set_schib_wait()
227 if (cdev->private->state != DEV_STATE_ONLINE) in set_schib_wait()
236 cdev->private->state = DEV_STATE_CMFCHANGE; in set_schib_wait()
237 cdev->private->cmb_wait = &set_data; in set_schib_wait()
238 spin_unlock_irq(cdev->ccwlock); in set_schib_wait()
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| /linux-6.1.9/sound/usb/caiaq/ |
| D | audio.c | 30 #define MAKE_CHECKBYTE(cdev,stream,i) \ argument
31 (stream << 1) | (~(i / (cdev->n_streams * BYTES_PER_SAMPLE_USB)) & 1)
51 activate_substream(struct snd_usb_caiaqdev *cdev, in activate_substream() argument
54 spin_lock(&cdev->spinlock); in activate_substream()
57 cdev->sub_playback[sub->number] = sub; in activate_substream()
59 cdev->sub_capture[sub->number] = sub; in activate_substream()
61 spin_unlock(&cdev->spinlock); in activate_substream()
65 deactivate_substream(struct snd_usb_caiaqdev *cdev, in deactivate_substream() argument
69 spin_lock_irqsave(&cdev->spinlock, flags); in deactivate_substream()
72 cdev->sub_playback[sub->number] = NULL; in deactivate_substream()
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| D | device.c | 135 struct snd_usb_caiaqdev *cdev = urb->context; in usb_ep1_command_reply_dispatch() local
138 if (urb->status || !cdev) { in usb_ep1_command_reply_dispatch()
145 memcpy(&cdev->spec, buf+1, sizeof(struct caiaq_device_spec)); in usb_ep1_command_reply_dispatch()
146 cdev->spec.fw_version = le16_to_cpu(cdev->spec.fw_version); in usb_ep1_command_reply_dispatch()
149 cdev->spec.fw_version, in usb_ep1_command_reply_dispatch()
150 cdev->spec.num_analog_audio_in, in usb_ep1_command_reply_dispatch()
151 cdev->spec.num_analog_audio_out, in usb_ep1_command_reply_dispatch()
152 cdev->spec.num_midi_in, in usb_ep1_command_reply_dispatch()
153 cdev->spec.num_midi_out, in usb_ep1_command_reply_dispatch()
154 cdev->spec.data_alignment); in usb_ep1_command_reply_dispatch()
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| D | input.c | 190 static inline void snd_caiaq_input_report_abs(struct snd_usb_caiaqdev *cdev, in snd_caiaq_input_report_abs() argument
194 input_report_abs(cdev->input_dev, axis, in snd_caiaq_input_report_abs()
198 static void snd_caiaq_input_read_analog(struct snd_usb_caiaqdev *cdev, in snd_caiaq_input_read_analog() argument
202 struct input_dev *input_dev = cdev->input_dev; in snd_caiaq_input_read_analog()
204 switch (cdev->chip.usb_id) { in snd_caiaq_input_read_analog()
206 snd_caiaq_input_report_abs(cdev, ABS_X, buf, 2); in snd_caiaq_input_read_analog()
207 snd_caiaq_input_report_abs(cdev, ABS_Y, buf, 0); in snd_caiaq_input_read_analog()
208 snd_caiaq_input_report_abs(cdev, ABS_Z, buf, 1); in snd_caiaq_input_read_analog()
213 snd_caiaq_input_report_abs(cdev, ABS_X, buf, 0); in snd_caiaq_input_read_analog()
214 snd_caiaq_input_report_abs(cdev, ABS_Y, buf, 1); in snd_caiaq_input_read_analog()
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| D | midi.c | 28 struct snd_usb_caiaqdev *cdev = substream->rmidi->private_data; in snd_usb_caiaq_midi_input_trigger() local
30 if (!cdev) in snd_usb_caiaq_midi_input_trigger()
33 cdev->midi_receive_substream = up ? substream : NULL; in snd_usb_caiaq_midi_input_trigger()
44 struct snd_usb_caiaqdev *cdev = substream->rmidi->private_data; in snd_usb_caiaq_midi_output_close() local
45 if (cdev->midi_out_active) { in snd_usb_caiaq_midi_output_close()
46 usb_kill_urb(&cdev->midi_out_urb); in snd_usb_caiaq_midi_output_close()
47 cdev->midi_out_active = 0; in snd_usb_caiaq_midi_output_close()
52 static void snd_usb_caiaq_midi_send(struct snd_usb_caiaqdev *cdev, in snd_usb_caiaq_midi_send() argument
56 struct device *dev = caiaqdev_to_dev(cdev); in snd_usb_caiaq_midi_send()
58 cdev->midi_out_buf[0] = EP1_CMD_MIDI_WRITE; in snd_usb_caiaq_midi_send()
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| /linux-6.1.9/sound/soc/intel/catpt/ |
| D | dsp.c | 29 struct dma_chan *catpt_dma_request_config_chan(struct catpt_dev *cdev) in catpt_dma_request_config_chan() argument
39 chan = dma_request_channel(mask, catpt_dma_filter, cdev->dev); in catpt_dma_request_config_chan()
41 dev_err(cdev->dev, "request channel failed\n"); in catpt_dma_request_config_chan()
54 dev_err(cdev->dev, "slave config failed: %d\n", ret); in catpt_dma_request_config_chan()
62 static int catpt_dma_memcpy(struct catpt_dev *cdev, struct dma_chan *chan, in catpt_dma_memcpy() argument
73 dev_err(cdev->dev, "prep dma memcpy failed\n"); in catpt_dma_memcpy()
78 catpt_updatel_shim(cdev, HMDC, in catpt_dma_memcpy()
84 dev_err(cdev->dev, "submit tx failed: %d\n", ret); in catpt_dma_memcpy()
93 catpt_updatel_shim(cdev, HMDC, in catpt_dma_memcpy()
99 int catpt_dma_memcpy_todsp(struct catpt_dev *cdev, struct dma_chan *chan, in catpt_dma_memcpy_todsp() argument
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| D | device.c | 33 struct catpt_dev *cdev = dev_get_drvdata(dev); in catpt_suspend() local
37 chan = catpt_dma_request_config_chan(cdev); in catpt_suspend()
41 memset(&cdev->dx_ctx, 0, sizeof(cdev->dx_ctx)); in catpt_suspend()
42 ret = catpt_ipc_enter_dxstate(cdev, CATPT_DX_STATE_D3, &cdev->dx_ctx); in catpt_suspend()
48 ret = catpt_dsp_stall(cdev, true); in catpt_suspend()
52 ret = catpt_store_memdumps(cdev, chan); in catpt_suspend()
54 dev_err(cdev->dev, "store memdumps failed: %d\n", ret); in catpt_suspend()
58 ret = catpt_store_module_states(cdev, chan); in catpt_suspend()
60 dev_err(cdev->dev, "store module states failed: %d\n", ret); in catpt_suspend()
64 ret = catpt_store_streams_context(cdev, chan); in catpt_suspend()
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| D | loader.c | 89 int catpt_store_streams_context(struct catpt_dev *cdev, struct dma_chan *chan) in catpt_store_streams_context() argument
93 list_for_each_entry(stream, &cdev->stream_list, node) { in catpt_store_streams_context()
99 dev_dbg(cdev->dev, "storing stream %d ctx: off 0x%08x size %d\n", in catpt_store_streams_context()
102 ret = catpt_dma_memcpy_fromdsp(cdev, chan, in catpt_store_streams_context()
103 cdev->dxbuf_paddr + off, in catpt_store_streams_context()
104 cdev->lpe_base + off, in catpt_store_streams_context()
107 dev_err(cdev->dev, "memcpy fromdsp failed: %d\n", ret); in catpt_store_streams_context()
115 int catpt_store_module_states(struct catpt_dev *cdev, struct dma_chan *chan) in catpt_store_module_states() argument
119 for (i = 0; i < ARRAY_SIZE(cdev->modules); i++) { in catpt_store_module_states()
124 type = &cdev->modules[i]; in catpt_store_module_states()
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| D | registers.h | 133 #define catpt_num_dram(cdev) (hweight_long((cdev)->spec->dram_mask)) argument
134 #define catpt_num_iram(cdev) (hweight_long((cdev)->spec->iram_mask)) argument
135 #define catpt_dram_size(cdev) (catpt_num_dram(cdev) * CATPT_MEMBLOCK_SIZE) argument
136 #define catpt_iram_size(cdev) (catpt_num_iram(cdev) * CATPT_MEMBLOCK_SIZE) argument
140 #define catpt_shim_addr(cdev) \ argument
141 ((cdev)->lpe_ba + (cdev)->spec->host_shim_offset)
142 #define catpt_dma_addr(cdev, dma) \ argument
143 ((cdev)->lpe_ba + (cdev)->spec->host_dma_offset[dma])
144 #define catpt_ssp_addr(cdev, ssp) \ argument
145 ((cdev)->lpe_ba + (cdev)->spec->host_ssp_offset[ssp])
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| D | ipc.c | 55 static void catpt_dsp_send_tx(struct catpt_dev *cdev, in catpt_dsp_send_tx() argument
63 memcpy_toio(catpt_outbox_addr(cdev), tx->data, tx->size); in catpt_dsp_send_tx()
64 catpt_writel_shim(cdev, IPCC, header); in catpt_dsp_send_tx()
67 static int catpt_wait_msg_completion(struct catpt_dev *cdev, int timeout) in catpt_wait_msg_completion() argument
69 struct catpt_ipc *ipc = &cdev->ipc; in catpt_wait_msg_completion()
85 static int catpt_dsp_do_send_msg(struct catpt_dev *cdev, in catpt_dsp_do_send_msg() argument
89 struct catpt_ipc *ipc = &cdev->ipc; in catpt_dsp_do_send_msg()
101 catpt_dsp_send_tx(cdev, &request); in catpt_dsp_do_send_msg()
104 ret = catpt_wait_msg_completion(cdev, timeout); in catpt_dsp_do_send_msg()
106 dev_crit(cdev->dev, "communication severed: %d, rebooting dsp..\n", in catpt_dsp_do_send_msg()
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| /linux-6.1.9/drivers/net/can/m_can/ |
| D | m_can.c | 319 static inline u32 m_can_read(struct m_can_classdev *cdev, enum m_can_reg reg) in m_can_read() argument
321 return cdev->ops->read_reg(cdev, reg); in m_can_read()
324 static inline void m_can_write(struct m_can_classdev *cdev, enum m_can_reg reg, in m_can_write() argument
327 cdev->ops->write_reg(cdev, reg, val); in m_can_write()
331 m_can_fifo_read(struct m_can_classdev *cdev, in m_can_fifo_read() argument
334 u32 addr_offset = cdev->mcfg[MRAM_RXF0].off + fgi * RXF0_ELEMENT_SIZE + in m_can_fifo_read()
340 return cdev->ops->read_fifo(cdev, addr_offset, val, val_count); in m_can_fifo_read()
344 m_can_fifo_write(struct m_can_classdev *cdev, in m_can_fifo_write() argument
347 u32 addr_offset = cdev->mcfg[MRAM_TXB].off + fpi * TXB_ELEMENT_SIZE + in m_can_fifo_write()
353 return cdev->ops->write_fifo(cdev, addr_offset, val, val_count); in m_can_fifo_write()
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| /linux-6.1.9/drivers/net/ethernet/qlogic/qed/ |
| D | qed_main.c | 258 static void qed_free_pci(struct qed_dev *cdev) in qed_free_pci() argument
260 struct pci_dev *pdev = cdev->pdev; in qed_free_pci()
264 if (cdev->doorbells && cdev->db_size) in qed_free_pci()
265 iounmap(cdev->doorbells); in qed_free_pci()
266 if (cdev->regview) in qed_free_pci()
267 iounmap(cdev->regview); in qed_free_pci()
279 static int qed_init_pci(struct qed_dev *cdev, struct pci_dev *pdev) in qed_init_pci() argument
284 cdev->pdev = pdev; in qed_init_pci()
288 DP_NOTICE(cdev, "Cannot enable PCI device\n"); in qed_init_pci()
293 DP_NOTICE(cdev, "No memory region found in bar #0\n"); in qed_init_pci()
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| D | qed_debug.h | 26 int qed_dbg_grc(struct qed_dev *cdev, void *buffer, u32 *num_dumped_bytes);
27 int qed_dbg_grc_size(struct qed_dev *cdev);
28 int qed_dbg_idle_chk(struct qed_dev *cdev, void *buffer,
30 int qed_dbg_idle_chk_size(struct qed_dev *cdev);
31 int qed_dbg_reg_fifo(struct qed_dev *cdev, void *buffer,
33 int qed_dbg_reg_fifo_size(struct qed_dev *cdev);
34 int qed_dbg_igu_fifo(struct qed_dev *cdev, void *buffer,
36 int qed_dbg_igu_fifo_size(struct qed_dev *cdev);
37 int qed_dbg_protection_override(struct qed_dev *cdev, void *buffer,
39 int qed_dbg_protection_override_size(struct qed_dev *cdev);
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| /linux-6.1.9/drivers/usb/gadget/ |
| D | composite.c | 162 struct usb_composite_dev *cdev; in config_ep_by_speed_and_alt() local
203 cdev = get_gadget_data(g); in config_ep_by_speed_and_alt()
205 WARNING(cdev, in config_ep_by_speed_and_alt()
265 ERROR(cdev, "ep0 bMaxBurst must be 0\n"); in config_ep_by_speed_and_alt()
319 DBG(config->cdev, "adding '%s'/%p to config '%s'/%p\n", in usb_add_function()
361 DBG(config->cdev, "adding '%s'/%p --> %d\n", in usb_add_function()
403 struct usb_composite_dev *cdev = function->config->cdev; in usb_function_deactivate() local
407 spin_lock_irqsave(&cdev->lock, flags); in usb_function_deactivate()
409 if (cdev->deactivations == 0) { in usb_function_deactivate()
410 spin_unlock_irqrestore(&cdev->lock, flags); in usb_function_deactivate()
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| /linux-6.1.9/sound/soc/sof/ |
| D | sof-client.c | 29 struct sof_client_dev *cdev; member
41 struct sof_client_dev *cdev; member
49 struct sof_client_dev *cdev = auxiliary_dev_to_sof_client_dev(auxdev); in sof_client_auxdev_release() local
51 kfree(cdev->auxdev.dev.platform_data); in sof_client_auxdev_release()
52 kfree(cdev); in sof_client_auxdev_release()
55 static int sof_client_dev_add_data(struct sof_client_dev *cdev, const void *data, in sof_client_dev_add_data() argument
66 cdev->auxdev.dev.platform_data = d; in sof_client_dev_add_data()
174 struct sof_client_dev *cdev; in sof_client_dev_register() local
177 cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); in sof_client_dev_register()
178 if (!cdev) in sof_client_dev_register()
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| /linux-6.1.9/drivers/misc/ |
| D | enclosure.c | 173 device_unregister(&edev->component[i].cdev); in enclosure_unregister()
184 static void enclosure_link_name(struct enclosure_component *cdev, char *name) in enclosure_link_name() argument
187 strcat(name, dev_name(&cdev->cdev)); in enclosure_link_name()
190 static void enclosure_remove_links(struct enclosure_component *cdev) in enclosure_remove_links() argument
194 enclosure_link_name(cdev, name); in enclosure_remove_links()
200 if (cdev->dev->kobj.sd) in enclosure_remove_links()
201 sysfs_remove_link(&cdev->dev->kobj, name); in enclosure_remove_links()
203 if (cdev->cdev.kobj.sd) in enclosure_remove_links()
204 sysfs_remove_link(&cdev->cdev.kobj, "device"); in enclosure_remove_links()
207 static int enclosure_add_links(struct enclosure_component *cdev) in enclosure_add_links() argument
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| /linux-6.1.9/drivers/net/ethernet/chelsio/inline_crypto/chtls/ |
| D | chtls_main.c | 63 ret = chtls_listen_start(clisten->cdev, clisten->sk); in listen_notify_handler()
67 chtls_listen_stop(clisten->cdev, clisten->sk); in listen_notify_handler()
86 static int chtls_start_listen(struct chtls_dev *cdev, struct sock *sk) in chtls_start_listen() argument
101 clisten->cdev = cdev; in chtls_start_listen()
110 static void chtls_stop_listen(struct chtls_dev *cdev, struct sock *sk) in chtls_stop_listen() argument
120 clisten->cdev = cdev; in chtls_stop_listen()
131 struct chtls_dev *cdev; in chtls_inline_feature() local
134 cdev = to_chtls_dev(dev); in chtls_inline_feature()
136 for (i = 0; i < cdev->lldi->nports; i++) { in chtls_inline_feature()
137 netdev = cdev->ports[i]; in chtls_inline_feature()
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| /linux-6.1.9/drivers/net/ethernet/intel/i40e/ |
| D | i40e_client.c | 86 struct i40e_client_instance *cdev = pf->cinst; in i40e_notify_client_of_vf_msg() local
88 if (!cdev || !cdev->client) in i40e_notify_client_of_vf_msg()
90 if (!cdev->client->ops || !cdev->client->ops->virtchnl_receive) { in i40e_notify_client_of_vf_msg()
95 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) { in i40e_notify_client_of_vf_msg()
99 cdev->client->ops->virtchnl_receive(&cdev->lan_info, cdev->client, in i40e_notify_client_of_vf_msg()
112 struct i40e_client_instance *cdev = pf->cinst; in i40e_notify_client_of_l2_param_changes() local
115 if (!cdev || !cdev->client) in i40e_notify_client_of_l2_param_changes()
117 if (!cdev->client->ops || !cdev->client->ops->l2_param_change) { in i40e_notify_client_of_l2_param_changes()
122 if (!test_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state)) { in i40e_notify_client_of_l2_param_changes()
128 memcpy(&cdev->lan_info.params, ¶ms, sizeof(struct i40e_params)); in i40e_notify_client_of_l2_param_changes()
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| /linux-6.1.9/include/linux/qed/ |
| D | qed_eth_if.h | 194 int (*ieee_getpfc)(struct qed_dev *cdev, struct ieee_pfc *pfc);
195 int (*ieee_setpfc)(struct qed_dev *cdev, struct ieee_pfc *pfc);
196 int (*ieee_getets)(struct qed_dev *cdev, struct ieee_ets *ets);
197 int (*ieee_setets)(struct qed_dev *cdev, struct ieee_ets *ets);
198 int (*ieee_peer_getets)(struct qed_dev *cdev, struct ieee_ets *ets);
199 int (*ieee_peer_getpfc)(struct qed_dev *cdev, struct ieee_pfc *pfc);
200 int (*ieee_getapp)(struct qed_dev *cdev, struct dcb_app *app);
201 int (*ieee_setapp)(struct qed_dev *cdev, struct dcb_app *app);
204 u8 (*getstate)(struct qed_dev *cdev);
205 u8 (*setstate)(struct qed_dev *cdev, u8 state);
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| /linux-6.1.9/drivers/platform/surface/ |
| D | surface_aggregator_cdev.c | 57 struct ssam_cdev *cdev; member
76 static struct ssam_cdev *ssam_cdev_get(struct ssam_cdev *cdev) in ssam_cdev_get() argument
78 if (cdev) in ssam_cdev_get()
79 kref_get(&cdev->kref); in ssam_cdev_get()
81 return cdev; in ssam_cdev_get()
84 static void ssam_cdev_put(struct ssam_cdev *cdev) in ssam_cdev_put() argument
86 if (cdev) in ssam_cdev_put()
87 kref_put(&cdev->kref, __ssam_cdev_release); in ssam_cdev_put()
111 dev_warn(client->cdev->dev, in ssam_cdev_notifier()
142 lockdep_assert_held_read(&client->cdev->lock); in ssam_cdev_notifier_register()
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