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Re: [PATCH 5/10] watchdog: bcm63xx_wdt: Use WATCHDOG_CORE

From "Simon Arlott" <simon@fire.lp0.eu>
Newsgroups linux.kernel
Subject Re: [PATCH 5/10] watchdog: bcm63xx_wdt: Use WATCHDOG_CORE
Date 2015-11-25 14:10 +0100
Message-ID <qyHZE-6IP-29@gated-at.bofh.it> (permalink)
References (3 earlier) <qxocG-2BX-5@gated-at.bofh.it> <qxsJj-5JA-1@gated-at.bofh.it> <qxDv3-4PJ-3@gated-at.bofh.it> <qxDv3-4PJ-11@gated-at.bofh.it> <qyyjE-8le-15@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Wed, November 25, 2015 02:44, Guenter Roeck wrote:
> The "running" flag should no longer be needed. watchdog_active()
> should provide that information.

I'm going to need to keep that because I need to know if it's running
in the interrupt handler, and wdd->lock is a mutex.

>> @@ -306,17 +202,18 @@ unregister_timer:
>>
>>   static int bcm63xx_wdt_remove(struct platform_device *pdev)
>>   {
>> -	if (!nowayout)
>> -		bcm63xx_wdt_hw_stop();
>> +	struct watchdog_device *wdd = platform_get_drvdata(pdev);
>>
>> -	misc_deregister(&bcm63xx_wdt_miscdev);
>>   	bcm63xx_timer_unregister(TIMER_WDT_ID);
>> +	watchdog_unregister_device(wdd);
>
> Shouldn't that come first, before unregistering the timer ?

No, because wdd->dev is used in the interrupt handler. I will have to
move registration of the interrupt to after creating the watchdog
because it could currently be used before wdd->dev is set.

-- 
Simon Arlott
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Thread

[PATCH 1/4] clocksource: Add brcm,bcm6345-timer device tree binding Simon Arlott <simon@fire.lp0.eu> - 2015-11-21 20:10 +0100
  [PATCH 2/4] MIPS: bmips: Add bcm6345-l2-timer interrupt controller Simon Arlott <simon@fire.lp0.eu> - 2015-11-21 20:10 +0100
  [PATCH 4/4] MIPS: bmips: Convert bcm63xx_wdt to use WATCHDOG_CORE Simon Arlott <simon@fire.lp0.eu> - 2015-11-21 20:10 +0100
    Re: [PATCH 4/4] MIPS: bmips: Convert bcm63xx_wdt to use WATCHDOG_CORE Guenter Roeck <linux@roeck-us.net> - 2015-11-21 22:40 +0100
      Re: [PATCH 4/4] MIPS: bmips: Convert bcm63xx_wdt to use WATCHDOG_CORE Simon Arlott <simon@fire.lp0.eu> - 2015-11-21 22:50 +0100
        Re: [PATCH 4/4] MIPS: bmips: Convert bcm63xx_wdt to use WATCHDOG_CORE Guenter Roeck <linux@roeck-us.net> - 2015-11-22 03:40 +0100
          [PATCH 6/10] watchdog: bcm63xx_wdt: Obtain watchdog clock HZ from  "periph" clk Simon Arlott <simon@fire.lp0.eu> - 2015-11-22 15:10 +0100
            Re: [PATCH 6/10] watchdog: bcm63xx_wdt: Obtain watchdog clock HZ from  "periph" clk Jonas Gorski <jogo@openwrt.org> - 2015-11-23 16:10 +0100
              Re: [PATCH 6/10] watchdog: bcm63xx_wdt: Obtain watchdog clock HZ  from "periph" clk Florian Fainelli <f.fainelli@gmail.com> - 2015-11-23 19:30 +0100
                Re: [PATCH 6/10] watchdog: bcm63xx_wdt: Obtain watchdog clock HZ from  "periph" clk Simon Arlott <simon@fire.lp0.eu> - 2015-11-23 20:10 +0100
            [PATCH (v2) 6/10] watchdog: bcm63xx_wdt: Obtain watchdog clock HZ  from "periph" clk "Simon Arlott" <simon@fire.lp0.eu> - 2015-11-24 23:20 +0100
              Re: [PATCH (v2) 6/10] watchdog: bcm63xx_wdt: Obtain watchdog clock  HZ from "periph" clk Florian Fainelli <f.fainelli@gmail.com> - 2015-11-24 23:50 +0100
                [PATCH (v3) 6/11] watchdog: bcm63xx_wdt: Obtain watchdog clock HZ  from "periph" clk Simon Arlott <simon@fire.lp0.eu> - 2015-11-25 23:50 +0100
          [PATCH 7/10] watchdog: bcm63xx_wdt: Add get_timeleft function Simon Arlott <simon@fire.lp0.eu> - 2015-11-22 15:10 +0100
            [PATCH (v2) 7/10] watchdog: bcm63xx_wdt: Add get_timeleft function "Simon Arlott" <simon@fire.lp0.eu> - 2015-11-24 23:20 +0100
              Re: [PATCH (v2) 7/10] watchdog: bcm63xx_wdt: Add get_timeleft function Florian Fainelli <f.fainelli@gmail.com> - 2015-11-24 23:50 +0100
              Re: [PATCH (v2) 7/10] watchdog: bcm63xx_wdt: Add get_timeleft  function Guenter Roeck <linux@roeck-us.net> - 2015-11-25 04:00 +0100
                Re: [PATCH (v2) 7/10] watchdog: bcm63xx_wdt: Add get_timeleft  function Simon Arlott <simon@fire.lp0.eu> - 2015-11-25 09:20 +0100
                [PATCH (v4) 7/11] watchdog: bcm63xx_wdt: Add get_timeleft function Simon Arlott <simon@fire.lp0.eu> - 2015-11-26 00:00 +0100
                [PATCH (v4) 8/11] watchdog: bcm63xx_wdt: Warn if the watchdog is  currently running Simon Arlott <simon@fire.lp0.eu> - 2015-11-26 00:00 +0100
                [PATCH (v3) 7/11] watchdog: bcm63xx_wdt: Add get_timeleft function Simon Arlott <simon@fire.lp0.eu> - 2015-11-26 00:00 +0100
          Re: [PATCH 4/10] (Was: [PATCH 4/4]) MIPS: bmips: Convert bcm63xx_wdt  to use WATCHDOG_CORE Simon Arlott <simon@fire.lp0.eu> - 2015-11-22 15:10 +0100
            [PATCH 5/10] watchdog: bcm63xx_wdt: Use WATCHDOG_CORE Simon Arlott <simon@fire.lp0.eu> - 2015-11-22 15:10 +0100
              Re: [PATCH 5/10] watchdog: bcm63xx_wdt: Use WATCHDOG_CORE Guenter Roeck <linux@roeck-us.net> - 2015-11-25 03:50 +0100
                Re: [PATCH 5/10] watchdog: bcm63xx_wdt: Use WATCHDOG_CORE "Simon Arlott" <simon@fire.lp0.eu> - 2015-11-25 14:10 +0100
                Re: [PATCH 5/10] watchdog: bcm63xx_wdt: Use WATCHDOG_CORE Guenter Roeck <linux@roeck-us.net> - 2015-11-25 15:20 +0100
                Re: [PATCH 5/10] watchdog: bcm63xx_wdt: Use WATCHDOG_CORE Simon Arlott <simon@fire.lp0.eu> - 2015-11-25 20:50 +0100
                [PATCH (v3) 5/11] watchdog: bcm63xx_wdt: Use WATCHDOG_CORE Simon Arlott <simon@fire.lp0.eu> - 2015-11-25 23:50 +0100
            [PATCH 4/10] watchdog: bcm63xx_wdt: Handle hardware interrupt and  remove software timer Simon Arlott <simon@fire.lp0.eu> - 2015-11-22 15:10 +0100
              Re: [PATCH 4/10] watchdog: bcm63xx_wdt: Handle hardware interrupt  and remove software timer Guenter Roeck <linux@roeck-us.net> - 2015-11-24 19:30 +0100
                Re: [PATCH 4/10] watchdog: bcm63xx_wdt: Handle hardware interrupt and  remove software timer Jonas Gorski <jogo@openwrt.org> - 2015-11-25 21:20 +0100
                Re: [PATCH 4/10] watchdog: bcm63xx_wdt: Handle hardware interrupt and  remove software timer Simon Arlott <simon@fire.lp0.eu> - 2015-11-25 21:30 +0100
              [PATCH (v2) 4/10] watchdog: bcm63xx_wdt: Handle hardware interrupt  and remove software timer Simon Arlott <simon@fire.lp0.eu> - 2015-11-25 23:40 +0100
            [PATCH 8/10] watchdog: bcm63xx_wdt: Remove dependency on mach-bcm63xx  functions/defines Simon Arlott <simon@fire.lp0.eu> - 2015-11-22 15:20 +0100
            [PATCH 10/10] watchdog: bcm63xx_wdt: Use brcm,bcm6345-wdt device tree  binding Simon Arlott <simon@fire.lp0.eu> - 2015-11-22 15:20 +0100
              [PATCH (v2) 11/11] watchdog: bcm63xx_wdt: Use brcm,bcm6345-wdt device  tree binding Simon Arlott <simon@fire.lp0.eu> - 2015-11-26 00:20 +0100
            [PATCH 9/10] watchdog: bcm63xx_wdt: Use bcm63xx_timer interrupt  directly Simon Arlott <simon@fire.lp0.eu> - 2015-11-22 15:20 +0100
              [PATCH (v2) 10/11] watchdog: bcm63xx_wdt: Use bcm63xx_timer interrupt  directly Simon Arlott <simon@fire.lp0.eu> - 2015-11-26 00:10 +0100
  [PATCH 3/4] watchdog: Add brcm,bcm6345-wdt device tree binding Simon Arlott <simon@fire.lp0.eu> - 2015-11-21 20:10 +0100
    Re: [PATCH 3/4] watchdog: Add brcm,bcm6345-wdt device tree binding Rob Herring <robh@kernel.org> - 2015-11-22 23:20 +0100
  Re: [PATCH 1/4] clocksource: Add brcm,bcm6345-timer device tree  binding Rob Herring <robh@kernel.org> - 2015-11-22 23:20 +0100
  Re: [PATCH 1/4] clocksource: Add brcm,bcm6345-timer device tree binding Jonas Gorski <jogo@openwrt.org> - 2015-11-23 16:40 +0100
    [PATCH (v2) 2/10] MIPS: bmips: Add bcm6345-l2-timer interrupt  controller Simon Arlott <simon@fire.lp0.eu> - 2015-11-23 20:00 +0100
      [PATCH (v3) 2/10] MIPS: bmips: Add bcm6345-l2-timer interrupt  controller "Simon Arlott" <simon@fire.lp0.eu> - 2015-11-24 23:20 +0100
        Re: [PATCH (v3) 2/10] MIPS: bmips: Add bcm6345-l2-timer interrupt  controller Florian Fainelli <f.fainelli@gmail.com> - 2015-11-24 23:40 +0100
          [PATCH (v4) 2/11] MIPS: bmips: Add bcm6345-l2-timer interrupt  controller Simon Arlott <simon@fire.lp0.eu> - 2015-11-26 23:40 +0100
            Re: [PATCH (v4) 2/11] MIPS: bmips: Add bcm6345-l2-timer interrupt  controller Thomas Gleixner <tglx@linutronix.de> - 2015-11-27 09:40 +0100
              [PATCH (v5) 3/11] MIPS: bmips: Add bcm6345-l2-timer interrupt  controller Simon Arlott <simon@fire.lp0.eu> - 2015-11-28 13:30 +0100
    [PATCH (v2) 1/10] clocksource: Add brcm,bcm6345-timer device tree  binding Simon Arlott <simon@fire.lp0.eu> - 2015-11-23 20:00 +0100
      Re: [PATCH (v2) 1/10] clocksource: Add brcm,bcm6345-timer device  tree binding Rob Herring <robh@kernel.org> - 2015-11-25 04:10 +0100

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