[PATCH] radeon: Use mdelay() instead of msleep() in atom_op_delay().

[Dave Airlie]

2012/1/3 Michel D?nzer <michel at daenzer.net>:
> From: Michel D?nzer <michel.daenzer at amd.com>
>
> It can be called from atomic context, e.g. when switching to console for panic
> output.
>
> Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=43941

I wonder how ugly it would be to check for atomic context or not,
mdelay is quite a long busy delay to take a CPU, esp wrt to async
driver loading stuff.

Dave.