vme_dma_free_attribute(9)
π vme_dma_free_attribute(9) π
okay so this is a page straight out of the Kernel API Manual, bestie β vme_dma_free_attribute(9), the little cleanup function that closes out your DMA list attribute era. it's short, it's sweet, it's giving "small but mighty" β¨
πΈ NAME πΈ
vme_dma_free_attribute β literally frees a DMA list attribute. that's the whole job. no cap.
π¦ SYNOPSIS π¦
void vme_dma_free_attribute (struct vme_dma_attr *attributes );
bestie it returns void, meaning it gives you nothing back and that is exactly the point π
π ARGUMENTS π
attributesβ pointer to the DMA list attribute. yes queen, hand over the pointer and let her go π«Ά
β DESCRIPTION β
so what does it do? it frees a VME DMA list attribute. that's it, that's the vibe.
here's the part you actually need to remember though: a VME DMA list attribute can be safely freed once vme_dma_list_add has returned. that's the green light π’ β before that? don't. the timing is the whole thing, iykyk.
lowkey the most important sentence on this entire page: free it after vme_dma_list_add returns. not before. periodt. π
π₯ SEE ALSO π₯
the whole friend group, no one left out π β kernel file ./drivers/staging/vme_user/vme.c, plus:
vme_alloc_consistent(9)vme_free_consistent(9)vme_get_size(9)vme_slave_request(9)vme_slave_set(9)vme_slave_get(9)vme_slave_free(9)vme_master_request(9)vme_master_set(9)vme_master_get(9)vme_master_read(9)vme_master_write(9)vme_master_rmw(9)vme_master_mmap_prepare(9)vme_master_free(9)vme_dma_request(9)vme_new_dma_list(9)vme_dma_pattern_attribute(9)vme_dma_pci_attribute(9)vme_dma_vme_attribute(9)vme_dma_list_add(9)vme_dma_list_exec(9)vme_dma_list_free(9)vme_dma_free(9)vme_irq_request(9)vme_irq_free(9)vme_irq_generate(9)vme_lm_request(9)vme_lm_count(9)vme_lm_set(9)vme_lm_get(9)vme_lm_attach(9)vme_lm_detach(9)vme_lm_free(9)vme_slot_num(9)vme_bus_num(9)vme_register_driver(9)vme_unregister_driver(9)
and that's the page, bestie π this one lives in ./drivers/staging/vme_user, dated October 2026, and it goes by vme_dma_free_attribute(9) β now go free that attribute responsibly, mwah ππ
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms