dc395x_queue_command_lck(9)

💅 dc395x_queue_command_lck 💅

okay bestie, welcome to the dc395x_queue_command_lck(9) page from the Kernel API Manual — literally the group chat for queueing an SCSI command and handling that completion callback. no cap, niche but iconic. 🫶

✨ NAME ✨

dc395x_queue_command_lck — queue scsi command passed from the mid layer, invoke 'done' on completion. periodt. 💖

🌸 SYNOPSIS 🌸

enum scsi_qc_status dc395x_queue_command_lck (struct scsi_cmnd *cmd );

🎀 ARGUMENTS 🎀

• cmd — pointer to scsi command object. that’s the whole argument list, bestie.

🦋 DESCRIPTION 🦋

okay so the vibe check here: this returns 1 if the adapter (host) is busy, and returns 0 otherwise. one very real reason the adapter can be busy is that the number of outstanding queued commands is already equal to struct Scsi_Host::can_queue — like the outstanding count has hit that can_queue number, no cap. 😭

Required: if struct Scsi_Host::can_queue is ever non-zero, then this function is required. not optional, bestie — that’s the rule.

Locks: struct Scsi_Host::host_lock is held on entry (with "irqsave") and is expected to be held on return. do not let go of that lock on the way out, fr fr. 💅

🌈 SEE ALSO 🌈

Kernel file ./drivers/scsi/dc395x.c is the home base, and the whole see-also crew in order is:

• set_safe_settings(9)
• fix_settings(9)
• eeprom_index_to_delay(9)
• delay_to_eeprom_index(9)
• eeprom_override(9)
• dc395x_handle_interrupt(9)
• device_alloc(9)
• adapter_add_device(9)
• adapter_remove_device(9)
• adapter_remove_and_free_device(9)
• adapter_remove_and_free_all_devices(9)
• dc395x_sdev_init(9)
• dc395x_sdev_destroy(9)
• trms1040_wait_30us(9)
• trms1040_write_cmd(9)
• trms1040_set_data(9)
• trms1040_write_all(9)
• trms1040_get_data(9)
• trms1040_read_all(9)
• check_eeprom(9)
• print_eeprom_settings(9)
• adapter_print_config(9)
• adapter_init_params(9)
• adapter_init_scsi_host(9)
• adapter_init_chip(9)
• adapter_init(9)
• adapter_uninit_chip(9)
• adapter_uninit(9)
• dc395x_init_one(9)
• dc395x_remove_one(9)

kisses, bestie 🫶 this page’s source/version is ./drivers/scsi, dated October 2026, and it’s the dc395x_queue_command_lck(9) manual moment. slay and stay locked 💅✨