Re: swsusp does not stop DMA properly during resume

Andrew Morton
2004-01-20T23:05:55Z

Pavel Machek <pavel@ucw.cz> wrote:
>
> Hi!
>
> As Ben pointed out, swsusp is not doing the right thing with devices
> in 2.6.1. I had patch for a long time here, and it needs to go
> in... It stops them before copying pages back, so there are no issues
> with running DMAs etc.

I _think_ what this patch is doing is suspending all devices from within
the boot kernel before starting into the resumed kernel. Is this correct?

> + update_screen(fg_console); /* Hmm, is this the problem? */

Cryptic comment. To what "problem" does this refer?