On Fri, Feb 02, 2024 at 05:25:54PM -0500, Hamza Mahfooz wrote:
Currently, drivers have no mechanism to block requests to unbind devices.
And that is by design.
However, this can cause resource leaks and leave the device in an inconsistent state, such that rebinding the device may cause a hang or otherwise prevent the device from being rebound.
That is a driver bug, please fix your driver.
So, introduce the can_remove() callback to allow drivers to indicate if it isn't appropriate to remove a device at the given time.
Nope, sorry, the driver needs to be fixed.
What broken driver are you needing this for?
Also realize, only root can unbind drivers (and it can also unload modules), so if the root user really wants to do this, it can, and should be possible to.
sorry,
greg k-h