ep_count_bytes_remain(9)

💅 ep_count_bytes_remain(9) — Kernel API Manual ✨

okay bestie, this is the manual page for ep_count_bytes_remain(9) in the Kernel API Manual, and it is short, sweet, and very much main character energy. 🫶

🌸 NAME 🌸

ep_count_bytes_remain — get how many bytes in udc endpoint 💖

✨ SYNOPSIS ✨

int ep_count_bytes_remain (struct pxa_ep *ep );

🎀 ARGUMENTS 🎀

• ep — udc endpoint. That is the endpoint we are checking, bestie. 🎀

🦋 DESCRIPTION 🦋

It returns the number of bytes in OUT fifos. Is it broken for IN fifos? Yep — -EOPNOTSUPP energy, no cap. 💀

🔥 SEE ALSO 🔥

Kernel file ./drivers/usb/gadget/udc/pxa27x_udc.c is where all these besties live:

• is_match_usb_pxa(9)
• find_pxa_ep(9)
• update_pxa_ep_matches(9)
• pio_irq_enable(9)
• pio_irq_disable(9)
• udc_set_mask_UDCCR(9)
• udc_clear_mask_UDCCR(9)
• ep_write_UDCCSR(9)
• ep_is_empty(9)
• ep_is_full(9)
• epout_has_pkt(9)
• set_ep0state(9)
• ep0_idle(9)
• inc_ep_stats_reqs(9)
• inc_ep_stats_bytes(9)
• pxa_ep_setup(9)
• pxa_eps_setup(9)
• pxa_ep_alloc_request(9)
• pxa_ep_free_request(9)
• ep_add_request(9)
• ep_del_request(9)
• req_done(9)
• ep_end_out_req(9)
• ep0_end_out_req(9)
• ep_end_in_req(9)
• ep0_end_in_req(9)
• nuke(9)
• read_packet(9)
• write_packet(9)
• read_fifo(9)
• write_fifo(9)
• read_ep0_fifo(9)
• write_ep0_fifo(9)
• pxa_ep_queue(9)
• pxa_ep_dequeue(9)
• pxa_ep_set_halt(9)
• pxa_ep_fifo_status(9)
• pxa_ep_fifo_flush(9)
• pxa_ep_enable(9)
• pxa_ep_disable(9)
• dplus_pullup(9)
• pxa_udc_get_frame(9)
• pxa_udc_wakeup(9)
• should_enable_udc(9)
• should_disable_udc(9)
• pxa_udc_pullup(9)
• pxa_udc_vbus_session(9)
• pxa_udc_vbus_draw(9)
• pxa_udc_phy_event(9)
• udc_disable(9)
• udc_init_data(9)
• udc_enable(9)
• pxa27x_udc_start(9)
• stop_activity(9)
• pxa27x_udc_stop(9)
• handle_ep0_ctrl_req(9)
• handle_ep0(9)
• handle_ep(9)
• pxa27x_change_configuration(9)
• pxa27x_change_interface(9)
• irq_udc_suspend(9)
• irq_udc_resume(9)
• irq_udc_reconfig(9)
• irq_udc_reset(9)
• pxa_udc_irq(9)
• pxa_udc_probe(9)
• pxa_udc_remove(9)
• pxa_udc_suspend(9)
• pxa_udc_resume(9)

And for the cute sign-off: this page comes from source/version ./drivers/usb/gadget/udc 🌈 and it is dated October 2026 💖. Bye bestie, go count those bytes! ✨