From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Petr Mladek <pmladek@suse.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
Steven Rostedt <rostedt@goodmis.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 5/5] console: Introduce ->exit() callback
Date: Thu, 30 Jan 2020 12:01:03 +0200 [thread overview]
Message-ID: <20200130100103.GR32742@smile.fi.intel.com> (raw)
In-Reply-To: <20200130090917.sg5vnwvlng4ox6ua@pathway.suse.cz>
On Thu, Jan 30, 2020 at 10:09:17AM +0100, Petr Mladek wrote:
> On Mon 2020-01-27 13:47:19, Andy Shevchenko wrote:
> > Some consoles might require special operations on unregistering. For example,
> > serial console, when registered in the kernel, keeps power on for entire time,
> > until it gets unregistered. For such cases to have a balance we would provide
> > ->exit() callback.
>
> Is there any plan to use this callback, please?
>
> The console init, setup, registration code needs a clean up,
> definitely. If you plan some rework, I would like to understand
> the bigger picture before we start adding new callbacks.
Yes, as mentioned in the commit message I would like to use it for balancing
runtime PM reference counters in the UART code later on.
It will look like:
->setup():
pm_runtime_get(...);
->exit():
pm_runtime_put(...);
The current operations have no needs to be undone.
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2020-01-30 10:01 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-27 11:47 [PATCH v3 1/5] console: Don't perform test for CON_BRL flag Andy Shevchenko
2020-01-27 11:47 ` [PATCH v3 2/5] console: Drop double check for console_drivers being non-NULL Andy Shevchenko
2020-01-29 13:24 ` Petr Mladek
2020-01-27 11:47 ` [PATCH v3 3/5] console: Use for_each_console() helper in unregister_console() Andy Shevchenko
2020-01-29 14:11 ` Petr Mladek
2020-01-27 11:47 ` [PATCH v3 4/5] console: Avoid positive return code from unregister_console() Andy Shevchenko
2020-01-28 4:43 ` Sergey Senozhatsky
2020-01-28 9:22 ` Andy Shevchenko
2020-01-28 9:25 ` Sergey Senozhatsky
2020-01-28 9:37 ` Sergey Senozhatsky
2020-01-28 9:52 ` Andy Shevchenko
2020-01-30 9:04 ` Petr Mladek
2020-01-30 9:58 ` Andy Shevchenko
2020-01-30 12:22 ` Petr Mladek
2020-01-30 13:13 ` Andy Shevchenko
2020-01-27 11:47 ` [PATCH v3 5/5] console: Introduce ->exit() callback Andy Shevchenko
2020-01-28 5:17 ` Sergey Senozhatsky
2020-01-28 9:44 ` Andy Shevchenko
2020-01-29 13:41 ` Sergey Senozhatsky
2020-01-29 14:25 ` Andy Shevchenko
2020-01-29 15:12 ` Sergey Senozhatsky
2020-01-29 16:50 ` Sergey Senozhatsky
2020-01-30 13:14 ` Andy Shevchenko
2020-01-30 13:22 ` Petr Mladek
2020-01-30 13:39 ` Andy Shevchenko
2020-01-30 9:09 ` Petr Mladek
2020-01-30 10:01 ` Andy Shevchenko [this message]
2020-01-29 12:29 ` [PATCH v3 1/5] console: Don't perform test for CON_BRL flag Petr Mladek
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200130100103.GR32742@smile.fi.intel.com \
--to=andriy.shevchenko@linux.intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=pmladek@suse.com \
--cc=rostedt@goodmis.org \
--cc=sergey.senozhatsky@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).