On 11. 08. 20, 22:02, John Stultz wrote: > On Tue, Aug 11, 2020 at 10:00 AM Saravana Kannan <sarava...@google.com> wrote: >> >> On Mon, Aug 10, 2020 at 7:50 PM John Stultz <john.stu...@linaro.org> wrote: >>> >>> When booting with heavily modularized config, the serial console >>> may not be able to load until after init when modules that >>> satisfy needed dependencies have time to load. >>> >>> Unfortunately, as qcom_geni_console_setup is marked as __init, >>> the function may have been freed before we get to run it, >>> causing boot time crashes such as: >> >> Btw, I thought non-__init functions calling __init functions would be >> caught by the build system. Is that not correct? If it's correct, do >> we know how this gets past that check? > > I think it's because it's indirectly called through a function pointer.
Definitely. Given there are lots of __init by *_console_setup, I wonder how many console drivers return EPROBE_DEFER from probe and then register the console from the same (but deferred) probe like this driver does... In fact, it doesn't even matter if the probe returns EPROBE_DEFER. The probe is not marked __init, so the setup shouldn't be either. thanks, -- js
