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    SubjectRe: software suspend doesn't work with 2.6.22-rc3
    Date
    On Saturday, 26 May 2007 14:49, Maximilian Engelhardt wrote:
    > On Saturday 26 May 2007, Nigel Cunningham wrote:
    > > Hi.
    > >
    > > On Sat, 2007-05-26 at 11:28 +0200, Maximilian Engelhardt wrote:
    > > > Hello,
    > > >
    > > > When I try software suspend on my laptop it always returns to my running
    > > > system after some time.
    > > > This is what's logged by the kernel:
    > > >
    > > > swsusp: Basic memory bitmaps created
    > > > Stopping tasks ...
    > > > Stopping kernel threads timed out after 20 seconds (1 tasks refusing to
    > > > freeze):
    > > > cryptd
    > > > Restarting tasks ... done.
    > > > swsusp: Basic memory bitmaps freed
    > > >
    > > > I have no idea what's the problem, but if you tell me what I should do I
    > > > can create debugging information and/or test patches.
    > >
    > > Could you try this patch, please? It should help.
    > >
    > > Herbert, is this right? If cryptd is going to be used for block devs,
    > > the task should probably be PF_NOFREEZE (or whatever it is today)
    > > instead.
    > >
    > > Regards,
    > >
    > > Nigel
    > >
    > > crypto/cryptd.c | 1 +
    > > include/linux/freezer.h | 3 +++
    > > kernel/power/process.c | 2 +-
    > > 3 files changed, 5 insertions(+), 1 deletion(-)
    > > diff -ruNp 991-fix-cryptd.patch-old/crypto/cryptd.c
    > > 991-fix-cryptd.patch-new/crypto/cryptd.c ---
    > > 991-fix-cryptd.patch-old/crypto/cryptd.c 2007-05-19 18:16:47.000000000
    > > +1000 +++ 991-fix-cryptd.patch-new/crypto/cryptd.c 2007-05-26
    > > 19:45:42.000000000 +1000 @@ -341,6 +341,7 @@ static int cryptd_thread(void
    > > *data)
    > >
    > > mutex_unlock(&state->mutex);
    > >
    > > + try_to_freeze();
    > > schedule();
    > > } while (!stop);
    >
    > I tried your patch, but when I apply it my kernel doesn't compile any more. I
    > get these warnings/errors:

    You need to add '#include <freezer.h>' to crypto/cryptd.c .

    Greetings,
    Rafael
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