e1000_release_nvm_ich8lan(9)

🦋 e1000_release_nvm_ich8lan — release that NVM mutex, bestie ✨

Okay so this is a page from the Kernel API Manual (section 9, kernel developer vibes 💅), and it's about one tiny but lowkey crucial function in the e1000e driver fam. Let's get into it 🫶

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✨ NAME ✨

e1000_release_nvm_ich8lan — literally just "Release NVM mutex". That's the whole thing. Iconic brevity, no notes 👑

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🌸 SYNOPSIS 🌸

void e1000_release_nvm_ich8lan (struct e1000_hw *hw );

Yeah, she returns void — nothing comes back, she just does her job and leaves 💅

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🎀 ARGUMENTS 🎀

• hw — pointer to the HW structure. Like, the whole hardware state of the NIC, passed in by reference. That's the only thing she needs 🦋

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💖 DESCRIPTION 💖

So what does she actually do? She releases the mutex that's used while performing NVM operations. That's it. That's the function.

Think of it as the "okay I'm done in here, you can come back in" moment 🔓✨. Somebody had to hold that lock while poking at the NVM — and e1000_release_nvm_ich8lan is the one who unlocks the door and hands back the key. Teamwork, fr fr 🫶

No return value, no error, no drama. Just unlock and go 🌈

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🔥 SEE ALSO 🔥

Okay this list is long — like, genuinely a whole friend group — but every single one of them is here, no cap 💀

The kernel file itself:

• Kernel file ./drivers/net/ethernet/intel/e1000e/ich8lan.c

The whole squad (all section 9):

• e1000_phy_is_accessible_pchlan(9), e1000_toggle_lanphypc_pch_lpt(9),
• e1000_reconfigure_k1_params(9), e1000_init_phy_workarounds_pchlan(9),
• e1000_init_phy_params_pchlan(9), e1000_init_phy_params_ich8lan(9),
• e1000_init_nvm_params_ich8lan(9), e1000_init_mac_params_ich8lan(9),
• __e1000_access_emi_reg_locked(9), e1000_read_emi_reg_locked(9),
• e1000_write_emi_reg_locked(9), e1000_set_eee_pchlan(9),
• e1000_k1_workaround_lpt_lp(9), e1000_platform_pm_pch_lpt(9),
• e1000e_force_smbus(9), e1000_enable_ulp_lpt_lp(9),
• e1000_disable_ulp_lpt_lp(9), e1000_check_for_copper_link_ich8lan(9),
• e1000_acquire_nvm_ich8lan(9), e1000_acquire_swflag_ich8lan(9),
• e1000_release_swflag_ich8lan(9), e1000_check_mng_mode_ich8lan(9),
• e1000_check_mng_mode_pchlan(9), e1000_rar_set_pch2lan(9),
• e1000_rar_get_count_pch_lpt(9), e1000_rar_set_pch_lpt(9),
• e1000_check_reset_block_ich8lan(9), e1000_write_smbus_addr(9),
• e1000_sw_lcd_config_ich8lan(9), e1000_k1_gig_workaround_hv(9),
• e1000_configure_k1_ich8lan(9), e1000_oem_bits_config_ich8lan(9),
• e1000_set_mdio_slow_mode_hv(9), e1000_hv_phy_workarounds_ich8lan(9),
• e1000_copy_rx_addrs_to_phy_ich8lan(9),
• e1000_lv_jumbo_workaround_ich8lan(9),
• e1000_lv_phy_workarounds_ich8lan(9), e1000_k1_workaround_lv(9),
• e1000_gate_hw_phy_config_ich8lan(9), e1000_lan_init_done_ich8lan(9),
• e1000_post_phy_reset_ich8lan(9), e1000_phy_hw_reset_ich8lan(9),
• e1000_set_lplu_state_pchlan(9), e1000_set_d0_lplu_state_ich8lan(9),
• e1000_set_d3_lplu_state_ich8lan(9),
• e1000_valid_nvm_bank_detect_ich8lan(9), e1000_read_nvm_spt(9),
• e1000_read_nvm_ich8lan(9), e1000_flash_cycle_init_ich8lan(9),
• e1000_flash_cycle_ich8lan(9), e1000_read_flash_dword_ich8lan(9),
• e1000_read_flash_word_ich8lan(9), e1000_read_flash_byte_ich8lan(9),
• e1000_read_flash_data_ich8lan(9), e1000_read_flash_data32_ich8lan(9),
• e1000_write_nvm_ich8lan(9), e1000_update_nvm_checksum_spt(9),
• e1000_update_nvm_checksum_ich8lan(9),
• e1000_validate_nvm_checksum_ich8lan(9),
• e1000e_write_protect_nvm_ich8lan(9), e1000_write_flash_data_ich8lan(9),
• e1000_write_flash_data32_ich8lan(9), e1000_write_flash_byte_ich8lan(9),
• e1000_retry_write_flash_dword_ich8lan(9),
• e1000_retry_write_flash_byte_ich8lan(9),
• e1000_erase_flash_bank_ich8lan(9), e1000_valid_led_default_ich8lan(9),
• e1000_id_led_init_pchlan(9), e1000_get_bus_info_ich8lan(9),
• e1000_reset_hw_ich8lan(9), e1000_init_hw_ich8lan(9),
• e1000_initialize_hw_bits_ich8lan(9), e1000_setup_link_ich8lan(9),
• e1000_setup_copper_link_ich8lan(9), e1000_setup_copper_link_pch_lpt(9),
• e1000_get_link_up_info_ich8lan(9),
• e1000_kmrn_lock_loss_workaround_ich8lan(9),
• e1000e_set_kmrn_lock_loss_workaround_ich8lan(9),
• e1000e_igp3_phy_powerdown_workaround_ich8lan(9),
• e1000e_gig_downshift_workaround_ich8lan(9),
• e1000_suspend_workarounds_ich8lan(9),
• e1000_resume_workarounds_pchlan(9), e1000_cleanup_led_ich8lan(9),
• e1000_led_on_ich8lan(9), e1000_led_off_ich8lan(9),
• e1000_setup_led_pchlan(9), e1000_cleanup_led_pchlan(9),
• e1000_led_on_pchlan(9), e1000_led_off_pchlan(9),
• e1000_get_cfg_done_ich8lan(9), e1000_power_down_phy_copper_ich8lan(9),
• e1000_clear_hw_cntrs_ich8lan(9)

Like I said. Huge friend group. Nobody gets left behind 💜

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🌟 cute lil sign-off 🌟

This page comes from the ./drivers/net/ethernet/intel/e... source (yes, that's how the footer truncates it, and I'm not gonna pretend otherwise 🙈) and it's dated October 2026. Same name up top and down at the bottom, e1000_release_nvm_ich8lan(9), because symmetry is free and she ate 💅✨

Now go forth and release that mutex, bestie. Lock hygiene is self care 🎀🫶