Subject: [PATCH v2] TTY: hvc_dcc: probe for a JTAG connection before registering

From: [email-masked] (Rob Herring)
Date: Thu, 17 Oct 2013 15:31:47 -0500

On 10/17/2013 03:20 PM, Greg Kroah-Hartman wrote:
> On Thu, Oct 17, 2013 at 02:16:37PM -0500, Rob Herring wrote:
>> On Tue, Sep 24, 2013 at 9:05 PM, Rob Herring <[email-masked]> wrote:
>>> From: Rob Herring <[email-masked]>
>>>
>>> Enabling the ARM DCC console and using without a JTAG connection will
>>> simply hang the system. Since distros like to turn on all options, this
>>> is a reoccurring problem to debug. We can do better by checking if
>>> anything is attached and handling characters. There is no way to probe
>>> this, so send a newline and check that it is handled.
>>>
>>> Cc: Paolo Pisati <[email-masked]>
>>> Cc: Tim Gardner <[email-masked]>
>>> Cc: Greg Kroah-Hartman <[email-masked]>
>>> Cc: Jiri Slaby <[email-masked]>
>>> Signed-off-by: Rob Herring <[email-masked]>
>>> ---
>>> v2: use time_is_after_jiffies
>>>
>>>  drivers/tty/hvc/hvc_dcc.c | 21 +++++++++++++++++++++
>>>  1 file changed, 21 insertions(+)
>>
>> Greg, Jiri,
>>
>> Can you please apply.
> 
> I already did, didn't you get an email saying it was applied to my tree?

Ah, yes. Found it buried in my work email. Sorry about that.

Rob