igb_put_hw_semaphore(9)

💅 igb_put_hw_semaphore(9) — like, the whole thing, bestie

okay so welcome to the Kernel API Manual bestie, we're doing kernel networking today and honestly? it's giving iconic. this one's a little function with a big job and i'm obsessed 🎀

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✨ NAME ✨

igb_put_hw_semaphore — release the hardware semaphore, i.e. hand the keys back 🔑

no cap, that's the whole gig. she releases.

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🌸 SYNOPSIS 🌸

void igb_put_hw_semaphore (struct e1000_hw *hw );

literally one argument. one. and she returns void because she's not here to give you answers, she's here to free a lock 💀

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🦋 ARGUMENTS 🦋

• hw — pointer to the HW structure. yes, the HW structure. the main character. bestie, it's a pointer, so please make sure it actually points at something real before you pass it 🫶

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💖 DESCRIPTION 💖

so what does she do? she releases the hardware semaphore that's used to access the PHY or the NVM. that's it. that's the vibe check and she passed ✅

think of it like: somebody had to grab the semaphore to go poke at the PHY or the NVM, and now the job's done, so igb_put_hw_semaphore puts it back. give the lock back, be a good citizen, let the other threads breathe 😌

highkey important: this is the release half. the grabbing half lives elsewhere (scroll down to SEE ALSO, i gotchu 👀).

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🌈 SEE ALSO 🌈

first up, the source file herself:

• Kernel file ./drivers/net/ethernet/intel/igb/e1000_mac.c

and now the extended friend group, in exactly the order the original said, because i don't do my besties dirty:

• igb_get_bus_info_pcie(9)
• igb_clear_vfta(9)
• igb_write_vfta(9)
• igb_init_rx_addrs(9)
• igb_find_vlvf_slot(9)
• igb_vfta_set(9)
• igb_check_alt_mac_addr(9)
• igb_rar_set(9)
• igb_mta_set(9)
• igb_hash_mc_addr(9)
• igb_i21x_hw_doublecheck(9)
• igb_update_mc_addr_list(9)
• igb_clear_hw_cntrs_base(9)
• igb_check_for_copper_link(9)
• igb_setup_link(9)
• igb_config_collision_dist(9)
• igb_set_fc_watermarks(9)
• igb_set_default_fc(9)
• igb_force_mac_fc(9)
• igb_config_fc_after_link_up(9)
• igb_get_speed_and_duplex_copper(9)
• igb_get_hw_semaphore(9)
• igb_get_auto_rd_done(9)
• igb_valid_led_default(9)
• igb_id_led_init(9)
• igb_cleanup_led(9)
• igb_blink_led(9)
• igb_led_off(9)
• igb_disable_pcie_master(9)
• igb_validate_mdi_setting(9)
• igb_write_8bit_ctrl_reg(9)
• igb_enable_mng_pass_thru(9)

psst — igb_get_hw_semaphore(9) is literally right there in the list. she's the grab, this page is the release. matching set, iykyk 💅

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okay that's the page!! and before i go, a tiny cute sign-off: this little beauty comes from ./drivers/net/ethernet/intel/igb, dated October 2026, and she answers to the name igb_put_hw_semaphore(9). slay, go release that semaphore, bestie 🔥✨💜