linux-kernel - Re: [PATCH 4/9] clocksource: dw_apb_timer: use the eoi callback to clear pending interrupts

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

Message-Id: <201307060059.06053.heiko@sntech.de>
Date:	Sat, 6 Jul 2013 00:59:05 +0200
From:	Heiko Stübner <heiko@...ech.de>
To:	John Stultz <john.stultz@...aro.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Jamie Iles <jamie@...ieiles.com>,
	Dinh Nguyen <dinguyen@...era.com>,
	Grant Likely <grant.likely@...aro.org>,
	linux-arm-kernel@...ts.infradead.org,
	Rob Herring <rob.herring@...xeda.com>,
	devicetree-discuss@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
	Ulrich Prinz <ulrich.prinz@...glemail.com>
Subject: Re: [PATCH 4/9] clocksource: dw_apb_timer: use the eoi callback to clear pending interrupts

this patch should have had a

From: Ulrich Prinz <ulrich.prinz@...glemail.com>

sorry for the mistake

Am Samstag, 6. Juli 2013, 00:53:36 schrieb Heiko Stübner:
> Some timer variants have different mechanisms to clear a pending timer
> interrupt. Therefore don't hardcode the reading of the eoi register to
> clear them, but instead use the already existing eoi callback for this.
> 
> Signed-off-by: Ulrich Prinz <ulrich.prinz@...glemail.com>
> ---
>  drivers/clocksource/dw_apb_timer.c |   11 +++++++----
>  1 file changed, 7 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/clocksource/dw_apb_timer.c
> b/drivers/clocksource/dw_apb_timer.c index bd45351..5f80a30 100644
> --- a/drivers/clocksource/dw_apb_timer.c
> +++ b/drivers/clocksource/dw_apb_timer.c
> @@ -121,11 +121,14 @@ static irqreturn_t dw_apb_clockevent_irq(int irq,
> void *data) return IRQ_HANDLED;
>  }
> 
> -static void apbt_enable_int(struct dw_apb_timer *timer)
> +static void apbt_enable_int(struct dw_apb_clock_event_device *dw_ced)
>  {
> +	struct dw_apb_timer *timer = &dw_ced->timer;
>  	unsigned long ctrl = apbt_readl(timer, timer->reg_control);
> +
>  	/* clear pending intr */
> -	apbt_readl(timer, timer->reg_eoi);
> +	if (dw_ced->eoi)
> +		dw_ced->eoi(timer);
>  	ctrl &= ~APBTMR_CONTROL_INT;
>  	apbt_writel(timer, ctrl, timer->reg_control);
>  }
> @@ -200,7 +203,7 @@ static void apbt_set_mode(enum clock_event_mode mode,
>  		break;
> 
>  	case CLOCK_EVT_MODE_RESUME:
> -		apbt_enable_int(timer);
> +		apbt_enable_int(dw_ced);
>  		break;
>  	}
>  }
> @@ -325,7 +328,7 @@ void dw_apb_clockevent_register(struct
> dw_apb_clock_event_device *dw_ced)
> 
>  	apbt_writel(timer, 0, timer->reg_control);
>  	clockevents_register_device(&dw_ced->ced);
> -	apbt_enable_int(timer);
> +	apbt_enable_int(dw_ced);
>  }
> 
>  /**

--
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/