dvb_ca_en50...it_if_status(9)
π dvb_ca_en50221_wait_if_status β no wait, hold on, bestie π
okay so real quick before we dive in: this page lives in the Kernel API Manual, and the function's full government name is dvb_ca_en50221_wait_if_status (the page header literally truncates it to dvb_ca_en50...it_if_status(9) because man page headers are dramatic and hate vowels, iykyk π).
β¨ NAME β¨
dvb_ca_en50221_wait_if_status β the girl whose whole job is waiting. She sits on a CAM interface watching the STATUS register, waiting for the flags you asked for to actually show up, and she's also keeping an eye out for errors and timeouts the entire time. it's giving patient queen energy π
π SYNOPSIS π
int dvb_ca_en50221_wait_if_status (struct dvb_ca_private *ca , int slot
, u8 waitfor , int timeout_hz );
πΈ ARGUMENTS πΈ
caβ your CA instance. the main character of this whole situation π«Άslotβ which slot on the interface we're talking about.waitforβ the flags you're waiting for, bestie. this is the what of the wait.timeout_hzβ the timeout, in milliseconds. yes, the name says_hzand the unit is milliseconds, don't @ me, that's literally what the manual says π
β RETURN β
0on success π- nonzero on error π
that's it. that's the return. slay.
π¦ SEE ALSO π¦
okay this section is a whole friend group, buckle up:
- Kernel file
./drivers/media/dvb-core/dvb_ca_en50221.cfindstr(9) dvb_ca_en50221_link_init(9)dvb_ca_en50221_read_tuple(9)dvb_ca_en50221_parse_attributes(9)dvb_ca_en50221_set_configoption(9)dvb_ca_en50221_read_data(9)dvb_ca_en50221_write_data(9)dvb_ca_en50221_slot_shutdown(9)dvb_ca_en50221_camchange_irq(9)dvb_ca_en50221_camready_irq(9)dvb_ca_en50221_frda_irq(9)dvb_ca_en50221_thread_wakeup(9)dvb_ca_en50221_thread_update_delay(9)dvb_ca_en50221_poll_cam_gone(9)dvb_ca_en50221_thread_state_machine(9)dvb_ca_en50221_io_do_ioctl(9)dvb_ca_en50221_io_ioctl(9)dvb_ca_en50221_io_write(9)dvb_ca_en50221_io_read(9)dvb_ca_en50221_io_open(9)dvb_ca_en50221_io_release(9)dvb_ca_en50221_io_poll(9)dvb_ca_en50221_init(9)dvb_ca_en50221_release(9)
π lowkey reminder: if you're waiting on the STATUS register and it ghosts you, that's a timeout. know the difference between "flags showed up" and "flags left you on read".
mwah, that's the whole page π«Ά this lil doc lives in ./drivers/media/dvb-core, stamped October 2026, and yes it's part of the Kernel API Manual β go read the whole friend group above, they're all iconic. periodt. 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