linux-kernel - Re: [GIT PULL REQUEST] watchdog

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Date:	Sun, 13 Oct 2013 11:14:41 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Wim Van Sebroeck <wim@...ana.be>,
	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux Watchdog Mailing List <linux-watchdog@...r.kernel.org>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Jingoo Han <jg1.han@...sung.com>,
	Dan Carpenter <dan.carpenter@...cle.com>
Subject: Re: [GIT PULL REQUEST] watchdog - v3.12-rc4 Fixes

On 10/13/2013 11:07 AM, Wim Van Sebroeck wrote:
> Hi Linus,
>
> Please pull from 'master' branch of
> 	git://www.linux-watchdog.org/linux-watchdog.git
>
> This will fix a deadlock on the ts72xx_wdt driver,
> fix bitmasks in the kempld_wdt driver and
> fix a section mismatch in the sunxi_wdt driver.
>
> This will update the following files:
>
>   kempld_wdt.c |    2 +-
>   sunxi_wdt.c  |    4 ++--
>   ts72xx_wdt.c |    3 ++-
>   3 files changed, 5 insertions(+), 4 deletions(-)
>
> with these Changes:
>
> commit 1d5898b4f8a0f6e231546d30dd54f6f9b89c232c
> Author: Maxime Ripard <maxime.ripard@...e-electrons.com>
> Date:   Sat Oct 5 16:20:17 2013 +0200
>
>      watchdog: sunxi: Fix section mismatch
>
>      This driver has a section mismatch, for probe and remove functions,
>      leading to the following warning during the compilation.
>
>      WARNING: drivers/watchdog/built-in.o(.data+0x24): Section mismatch in
>      reference from the variable sunxi_wdt_driver to the function
>      .init.text:sunxi_wdt_probe()
>      The variable sunxi_wdt_driver references
>      the function __init sunxi_wdt_probe()
>
>      Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
>      Reviewed-by: Guenter Roeck <linux@...ck-us.net>
>      Signed-off-by: Wim Van Sebroeck <wim@...ana.be>
>
> commit 4c4e45669de475573b15d968a6dca8d00124c9ad
> Author: Jingoo Han <jg1.han@...sung.com>
> Date:   Mon Sep 23 19:16:57 2013 +0900
>
>      watchdog: kempld_wdt: Fix bit mask definition
>
>      STAGE_CFG bits are defined as [5:4] bits. However, '(((x) & 0x30) << 4)'
>      handles [9:8] bits. Thus, it should be fixed in order to handle
>      [5:4] bits.
>
>      Signed-off-by: Jingoo Han <jg1.han@...sung.com>
>      Reviewed-by: Guenter Roeck <linux@...ck-us.net>
>      Signed-off-by: Wim Van Sebroeck <wim@...ana.be>
>
> commit 8612ed0d97abcf1c016d34755b7cf2060de71963
> Author: Dan Carpenter <dan.carpenter@...cle.com>
> Date:   Fri Aug 23 11:40:59 2013 +0300
>
>      watchdog: ts72xx_wdt: locking bug in ioctl
>
>      Calling the WDIOC_GETSTATUS & WDIOC_GETBOOTSTATUS and twice will cause a
>      interruptible deadlock.
>
>      Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
>      Reviewed-by: Guenter Roeck <linux@...ck-us.net>
>      Signed-off-by: Wim Van Sebroeck <wim@...ana.be>
>
> For completeness, I added the overal diff below.
>
Hi Wim,

thanks a lot for picking up those patches.

Looks like the diffs don't match the description.
Are those possibly the diffs from your previous pull request ?

Guenter

> Greetings,
> Wim.
>
> ================================================================================
> diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
> index 1eff743..ae60406 100644
> --- a/drivers/watchdog/hpwdt.c
> +++ b/drivers/watchdog/hpwdt.c
> @@ -814,6 +814,9 @@ static int __devinit hpwdt_init_one(struct pci_dev *dev,
>   	hpwdt_timer_reg = pci_mem_addr + 0x70;
>   	hpwdt_timer_con = pci_mem_addr + 0x72;
>
> +	/* Make sure that timer is disabled until /dev/watchdog is opened */
> +	hpwdt_stop();
> +
>   	/* Make sure that we have a valid soft_margin */
>   	if (hpwdt_change_timer(soft_margin))
>   		hpwdt_change_timer(DEFAULT_MARGIN);
> diff --git a/drivers/watchdog/watchdog_core.c b/drivers/watchdog/watchdog_core.c
> index 6aa46a9..3796434 100644
> --- a/drivers/watchdog/watchdog_core.c
> +++ b/drivers/watchdog/watchdog_core.c
> @@ -128,11 +128,12 @@ EXPORT_SYMBOL_GPL(watchdog_register_device);
>   void watchdog_unregister_device(struct watchdog_device *wdd)
>   {
>   	int ret;
> -	int devno = wdd->cdev.dev;
> +	int devno;
>
>   	if (wdd == NULL)
>   		return;
>
> +	devno = wdd->cdev.dev;
>   	ret = watchdog_dev_unregister(wdd);
>   	if (ret)
>   		pr_err("error unregistering /dev/watchdog (err=%d)\n", ret);
> --
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>

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