check_plugged_state_change(9)

💖 check_plugged_state_change(9)

okay so bestie, this page is from the Kernel API Manual, and it's giving “one tiny kernel function with a very specific job.” The function is check_plugged_state_change, and the whole plot is spotting when an MC object's plugged state switches up. ✨

🌸 NAME

check_plugged_state_change — Check change in an MC object's plugged state. 💅

🦋 SYNOPSIS

void check_plugged_state_change (struct fsl_mc_device *mc_dev , struct
       fsl_mc_obj_desc *obj_desc );

🎀 ARGUMENTS

• mc_dev — pointer to the fsl-mc device for a given MC object. It's the device side of the situation, iykyk. 🫶
• obj_desc — pointer to the MC object's descriptor in the MC. Basically the MC's lil info card for the object. 🪪✨

✨ DESCRIPTION

If the plugged state has changed from unplugged to plugged, the fsl-mc device is bound to the corresponding device driver. That's the “welcome to the driver, bestie” moment. 💖

If the plugged state has changed from plugged to unplugged, the fsl-mc device is unbound from the corresponding device driver. That's the “okay bye, driver” moment. 😭👋

No cap, that's the whole function vibe: state change in, bind/unbind out. 🦋

🔥 SEE ALSO

Kernel file ./drivers/bus/fsl-mc/dprc-driver.c — go read the whole squad. 👑

• dprc_remove_devices(9)
• dprc_add_new_devices(9)
• dprc_scan_objects(9)
• dprc_scan_container(9)
• dprc_irq0_handler_thread(9)
• dprc_setup(9)
• dprc_probe(9)
• dprc_cleanup(9)
• dprc_remove(9)

xoxo bestie 💖 this page's source/version corner is ./drivers/bus/fsl-mc, dated October 2026, and it's the check_plugged_state_change(9) page. Go check those plugged-state changes, respectfully. 🫶🌈