Re: [PATCH] serial/8250: remove comment about schedule_timeout

[One Thousand Gnomes]

On Thu,  5 Jan 2017 13:48:40 -0200
Thadeu Lima de Souza Cascardo <cascardo@xxxxxxxxxxxxx> wrote:

> Ted T'so has added the function size_fifo in 1999 for the 2.3 series
> [1], a long time ago.
> 
> During the 2.5 cycle, Russell King has restructured the serial drivers
> and, in that process, has suggested using schedule_timeout instead of
> mdelay in size_fifo. [2]
> 
> It was only at 2.6.7 that Greg Kroah-Hartman added the msleep function
> to the core kernel, as people were starting to duplicate it. [3]
> 
> However, as size_fifo is called under a spinlock from the autoconfig
> function, we might not use msleep here, so removing that comment is the
> appropriate thing to do.

No.. it's still a flaw in the driver that we can't use msleep here. It's
one of those things that people want to know if the probe locking ever
gets restructured.

Alan