device_alloc(9)

💖 device_alloc(9) — the Kernel API Manual glow-up 🎀

okay so bestie, this one lives in the Kernel API Manual, and the whole page is literally just device_alloc doing its little allocation moment. slay. let's get into it 💅

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✨ NAME ✨

device_alloc — allocate a shiny new device instance. it creates the device instance and sets up all the data items for it. 🫶 the adapter instance is required so it can pull the configuration information for this device. and listen — this does *not* add the device to the adapter's device list. like, it builds the whole thing and then just... doesn't introduce it to the family. okay. noted. 💀

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🌸 SYNOPSIS 🌸

struct DeviceCtlBlk * device_alloc (struct AdapterCtlBlk *acb , u8
target , u8 lun );

that's the whole vibe right there: you hand it an acb, a target, and a lun, and it hands you back a struct DeviceCtlBlk *. 🔥

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🦋 ARGUMENTS 🦋

• acb — the adapter it pulls configuration information from. this is the main character of the argument list, honestly. 👑
• target — the target for the brand-new device. 🎯
• lun — the lun for the brand-new device. ✨

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💜 DESCRIPTION 💜

it returns the new device if everything goes well, or NULL on failure. that's it. that's the whole description. short, sweet, ate, left no crumbs. 😌

ngl, NULL on failure means you must vibe check the return value before you use it. no cap. 🚨

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⭐ SEE ALSO ⭐

the Kernel file ./drivers/scsi/dc395x.c fam — aka the whole friend group, iykyk:

• set_safe_settings(9)
• fix_settings(9)
• eeprom_index_to_delay(9)
• delay_to_eeprom_index(9)
• eeprom_override(9)
• dc395x_queue_command_lck(9)
• dc395x_handle_interrupt(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)

like, go read them, they're all right there in ./drivers/scsi, mwah. 💋

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and that's the page!! sign-off time 🧚: this one's filed under ./drivers/scsi, dated October 2026, and honestly? iconic. bye bestie, go allocate something responsibly. 🌈💖