From: Alan Cox <alan@linux.intel.com>
To: Greg KH <gregkh@linuxfoundation.org>
Cc: Linus Walleij <linus.walleij@linaro.org>,
Rickard Andersson <rickard.andersson@stericsson.com>,
"linux-serial@vger.kernel.org" <linux-serial@vger.kernel.org>,
Linus WALLEIJ <linus.walleij@stericsson.com>,
"daniel.lezcano@linaro.org" <daniel.lezcano@linaro.org>
Subject: Re: [PATCH v2] TTY: serial, add pm function
Date: Thu, 17 Jan 2013 13:16:14 +0000 [thread overview]
Message-ID: <20130117131614.30b9089e@bob.linux.org.uk> (raw)
In-Reply-To: <20130117023214.GB20928@kroah.com>
> Also, why does this driver need something that the hundreds of other
> serial drivers we have in-kernel today do not? What makes it special
> over everything else?
We certainly will need power management hooks on the tty layer -
probably they belong on the tty_port operations.
Several things have happened that make it more relevant
- power levels have come down to the point that serial ports are no
longer off the radar
- quite a few embedded and tablet devices have internal serial busses
where turning off ports and stuff behind them matters.
Alan
next prev parent reply other threads:[~2013-01-17 12:56 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-12 12:40 [PATCH v2] TTY: serial, add pm function Rickard Andersson
2013-01-16 7:05 ` Greg KH
2013-01-16 7:53 ` Rickard Andersson
2013-01-16 7:58 ` Greg KH
2013-01-16 8:33 ` Rickard Andersson
2013-01-16 15:24 ` Greg KH
2013-01-17 0:36 ` Linus Walleij
2013-01-17 2:32 ` Greg KH
2013-01-17 10:10 ` Rickard Andersson
2013-01-17 13:16 ` Alan Cox [this message]
2013-01-18 12:43 ` Linus Walleij
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