linux-kernel - [PATCH 0/6] Serial Omap fixes and cleanups

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <1366198467-6757-1-git-send-email-sourav.poddar@ti.com>
Date:	Wed, 17 Apr 2013 17:04:21 +0530
From:	Sourav Poddar <sourav.poddar@...com>
To:	<gregkh@...uxfoundation.org>, <tony@...mide.com>,
	<rmk+kernel@....linux.org.uk>, <khilman@...aro.org>
CC:	<linux-serial@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>,
	Sourav Poddar <sourav.poddar@...com>,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	Felipe Balbi <balbi@...com>, Rajendra nayak <rnayak@...com>
Subject: [PATCH 0/6] Serial Omap fixes and cleanups

Hi,

This patch series contains fixes and cleanups around the issue that 
the console UART should not idled on suspend while using "no_console_suspend"
in bootargs.

The approach thought of is to modify the serial core/serial driver to bypass
runtime PM if the UART in contention is a console and we are using "no_console_suspend"
in our bootargs.

While fixing the above issue, there are other cleanups also done as part of
this series which are no longer required. This cleanups mainly include getting
rid of using "omap_device_disable_idle_on_suspend" api for both dt and non dt case 
as the serial driver will be self sufficient to handle the "no_idle_on_suspend" issue.
Serial was the only one making use of "omap_device_disable_idle_on_suspend"

Test info (except drivers: serial: mpc52xx_uart: Remove "uart_console" defintion):
Omap4430sdp:
- Tested wakeup from UART after suspend for dt and non dt case.
Omap5430evm:
- Tested wakeup from UART after suspend for dt case.


There were discussions about how to handle "no_idle_on_suspend" issue and all the
discussions are as follows:
[v3]: https://lkml.org/lkml/2013/4/5/239
[v2]: https://lkml.org/lkml/2013/4/2/350
[v1]: https://lkml.org/lkml/2013/3/18/199
      https://lkml.org/lkml/2013/3/18/295
Due to the amount of change in approach and other cleanups coming around it, I am posting
this as a new series.

This patches are based on 3.9-rc3 custom tree which has 
Santosh Shilimkar serial patch[1]
[1]: http://permalink.gmane.org/gmane.linux.ports.arm.omap/95828

Cc: Santosh Shilimkar <santosh.shilimkar@...com>
Cc: Felipe Balbi <balbi@...com>
Cc: Rajendra nayak <rnayak@...com>

Sourav Poddar (6):
  drivers: tty: serial: Move "uart_console" def to core header file.
  drivers: serial: mpc52xx_uart: Remove "uart_console" defintion
  driver: serial: omap: add prepare/complete callback for
    "no_console_suspend" case
  arm: mach-omap2: remove "OMAP_DEVICE_NO_IDLE_ON_SUSPEND" check
  arm: dts: am33xx: Remove "ti,no_idle_on_suspend" property.
  arm: mach-omap2: Remove "no_console_suspend"

 arch/arm/boot/dts/am33xx.dtsi     |    1 -
 arch/arm/mach-omap2/omap_device.c |   10 +---------
 arch/arm/mach-omap2/serial.c      |    7 -------
 drivers/tty/serial/mpc52xx_uart.c |   10 ----------
 drivers/tty/serial/omap-serial.c  |   20 ++++++++++++++++++++
 drivers/tty/serial/serial_core.c  |    6 ------
 include/linux/serial_core.h       |    6 ++++++
 7 files changed, 27 insertions(+), 33 deletions(-)

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/