On (06/19/18 22:34), Steven Rostedt wrote:
>
> > There is no valid reason why an UART driver should do a printk() of
> > any sort inside the critical region where the console is locked.
> >
> > Just remove those printk's, don't add new crazy locking.
>
> Perhaps we should do an audit of the console drivers and remove all
> printk, pr_* , WARN*, BUG* from them.
I think I did a terrible job explaining my motivation.
Sorry for that!
What I tried to address with my patch set was not a direct uart->printk,
but mostly all those
uart-> tty / core kernel / who knows what else -> printk
cases. When are in that special context "called from uart driver" which
can backfire on us.
-ss
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