cdns3_gadget_ep0_enable(9)
π cdns3_gadget_ep0_enable π
okay so this is a page straight out of the Kernel API Manual β yes bestie, the kernel has its own manual and it's giving official documentation energy β¨
πΈ NAME πΈ
cdns3_gadget_ep0_enable β and honestly? the original page left the description totally blank here π so like, the name is the whole personality. it's the enable-ery for endpoint zero, and the details are right below, keep scrolling π«Ά
π¦ SYNOPSIS π¦
int cdns3_gadget_ep0_enable (struct usb_ep *ep , const struct
usb_endpoint_descriptor *desc );
so it takes two things and hands you back an int, periodt π
π ARGUMENTS π
epβ pointer to the endpoint zero object π this is the main character, the ep0 itselfdescβ pointer to theusb_endpoint_descriptorπ the descriptor that describes the endpoint
β DESCRIPTION β
okay so here's the tea, and it's important: this function shouldn't be called by a gadget driver. like, at all. not even a little. π«
the reason? endpoint 0 is always active. it's already on. it never needed your help. it's that friend who's been ready to go for twenty minutes while you're still looking for your shoes π
so yeah β no cap, there is genuinely nothing for you to enable here, which is why the gadgets drivers out there should just leave it alone and let ep0 do its thing π
π₯ SEE ALSO π₯
if you're the kind of person who clicks every link in the group chat, this list is for you π§
the kernel file lives at ./drivers/usb/cdns3/cdns3-ep0.c and here's the whole squad:
cdns3_ep0_run_transfer(9)cdns3_ep0_delegate_req(9)cdns3_req_ep0_set_configuration(9)cdns3_req_ep0_set_address(9)cdns3_req_ep0_get_status(9)cdns3_req_ep0_handle_feature(9)cdns3_req_ep0_set_sel(9)cdns3_req_ep0_set_isoch_delay(9)cdns3_ep0_standard_request(9)cdns3_ep0_setup_phase(9)cdns3_check_new_setup(9)cdns3_check_ep0_interrupt_proceed(9)cdns3_gadget_ep0_disable(9)cdns3_gadget_ep0_set_halt(9)cdns3_gadget_ep0_queue(9)cdns3_gadget_ep_set_wedge(9)cdns3_ep0_config(9)cdns3_init_ep0(9)
eighteen functions, zero skips, we read the whole list π«‘
β οΈ tiny vibe check reminder: don't call this from a gadget driver. ep0 is already up and running, bestie. it's fine. it's thriving. π
and that's the page!! sourced from ./drivers/usb/cdns3, dated October 2026 β mwah, iconic, no notes πβ¨π
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