2012/1/13 Arend van Spriel [off-list ref]:

I have a Dell Latitude E6410 over here. I applied the patches to

commit 099469502f62fbe0d7e4f0b83a2f22538367f734
Merge: 7c17d86 35f1526
Author: Linus Torvalds [off-list ref]
Date:   Thu Jan 12 20:42:54 2012 -0800

   Merge branch 'akpm' (aka "Andrew's patch-bomb, take two")

Upon suspend my laptop hangs (see trace below pulled from serial
console). I do not see the pr_debug in the suspend function (compiled
with -DDEBUG). Unfortunately the same happens when I don't insert bcma
and brcmsmac. I attached the kernel configuration.

Ok, so it's not the bcma/brcmsmac drivers, and your hang seems to be
at suspend time.

There is at least one other suspend problem in the current merge
window, you may be hitting them. The one I know about is some oddity
with the machine check driver, so if you have CONFIG_X86_MCE enabled,
try compiling without it.

Also, try

    echo devices > /sys/power/pm_test
    echo mem > /sys/power/state

which doesn't do the "real" suspend, but only goes through the device
suspend. That often leaves more of a trace of what may have gone
wrong.

                         Linus