Re: [PATCH] pcmcia: Add disable_clkrun option

[Andrew Morton]

OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx> wrote:
>
> Hi,
> 
> I received report that transmission of Realtek 8139 doesn't work.  The
> cause of this problem was CLKRUN protocols of laptop's TI 12xx CardBus
> bridge.
> 
> And I remember that this problem had happened on Thinkpad before. In
> the case, problem seems solved by similar workaround of sound/oss/cs46xx.c.

What is a CLKRUN protocol and why do we need to disable it?  Is it a
hardware bug, or is the kernel malfunctioning in some way?

> This patch adds "disable_clkrun" option as workaround of problem to
> yenta_socket.

We should add a MODULE_PARM_DESC as well, so users have some hope of finding
this option.

But what are the symptoms of the problem?  How would a user know that he
should try using this option?

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