From: Arnd Bergmann <arnd@arndb.de>
To: Ley Foon Tan <lftan@altera.com>
Subject: Re: [PATCH 20/28] nios2: Time keeping
Date: Tue, 22 Apr 2014 15:44:33 +0200
User-Agent: KMail/1.12.2 (Linux/3.8.0-22-generic; KDE/4.3.2; x86_64; ; )
Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-doc@vger.kernel.org, lftan.linux@gmail.com,
        cltang@codesourcery.com
References: <1397824031-4892-1-git-send-email-lftan@altera.com> <1397824031-4892-17-git-send-email-lftan@altera.com>
In-Reply-To: <1397824031-4892-17-git-send-email-lftan@altera.com>
MIME-Version: 1.0
Content-Type: Text/Plain;
  charset="iso-8859-15"
Content-Transfer-Encoding: 7bit
Message-Id: <201404221544.33399.arnd@arndb.de>
Sender: linux-kernel-owner@vger.kernel.org

On Friday 18 April 2014, Ley Foon Tan wrote:
> +static inline unsigned long read_timersnapshot(void)
> +{
> +       unsigned long count;
> +
> +       outw(0, timer_membase + ALTERA_TIMER_SNAPL_REG);
> +       count =
> +               inw(timer_membase + ALTERA_TIMER_SNAPH_REG) << 16 |
> +               inw(timer_membase + ALTERA_TIMER_SNAPL_REG);
> +
> +       return count;
> +}
> +
> +static inline void write_timerperiod(unsigned long period)
> +{
> +       outw(period, timer_membase + ALTERA_TIMER_PERIODL_REG);
> +       outw(period >> 16, timer_membase + ALTERA_TIMER_PERIODH_REG);
> +}

It's wrong to use 'outw' if this device is not on an PC-style ISA bus,
which I assume it is not. Since timer_membase is an __iomem pointer,
I'm sure you want to use writew() instead.

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