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From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Boris Brezillon <boris.brezillon@bootlin.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
	linux-m68k@vger.kernel.org, David Woodhouse <dwmw2@infradead.org>,
	Brian Norris <computersforpeace@gmail.com>,
	Marek Vasut <marek.vasut@gmail.com>,
	Richard Weinberger <richard@nod.at>,
	linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] m68k: Implement ndelay() as an inline function to force type checking/casting
Date: Mon, 14 May 2018 09:23:34 +0200	[thread overview]
Message-ID: <20180514092334.43b5ee3c@xps13> (raw)
In-Reply-To: <20180513140212.3961-1-boris.brezillon@bootlin.com>

Hi Boris,

On Sun, 13 May 2018 16:02:12 +0200, Boris Brezillon
<boris.brezillon@bootlin.com> wrote:

> ndelay() is supposed to take an unsigned long, but if you define
> ndelay() as a macro and the caller pass an unsigned long long instead
> of an unsigned long, the unsigned long long to unsigned long cast is
> not done and we end up with an "undefined reference to `__udivdi3'"
> error at link time.
> 
> Fix that by making ndelay() an inline function and then defining dummy
> ndelay() macro that redirects to the ndelay() function (it's how most
> archs do to implement ndelay()).
> 
> Fixes: c8ee038bd148 ("m68k: Implement ndelay() based on the existing udelay() logic")
> Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>

Thanks for fixing it.

Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>


-- 
Miquel Raynal, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com

WARNING: multiple messages have this Message-ID (diff)
From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Boris Brezillon <boris.brezillon@bootlin.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
	linux-m68k@lists.linux-m68k.org,
	David Woodhouse <dwmw2@infradead.org>,
	Brian Norris <computersforpeace@gmail.com>,
	Marek Vasut <marek.vasut@gmail.com>,
	Richard Weinberger <richard@nod.at>,
	linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] m68k: Implement ndelay() as an inline function to force type checking/casting
Date: Mon, 14 May 2018 09:23:34 +0200	[thread overview]
Message-ID: <20180514092334.43b5ee3c@xps13> (raw)
In-Reply-To: <20180513140212.3961-1-boris.brezillon@bootlin.com>

Hi Boris,

On Sun, 13 May 2018 16:02:12 +0200, Boris Brezillon
<boris.brezillon@bootlin.com> wrote:

> ndelay() is supposed to take an unsigned long, but if you define
> ndelay() as a macro and the caller pass an unsigned long long instead
> of an unsigned long, the unsigned long long to unsigned long cast is
> not done and we end up with an "undefined reference to `__udivdi3'"
> error at link time.
> 
> Fix that by making ndelay() an inline function and then defining dummy
> ndelay() macro that redirects to the ndelay() function (it's how most
> archs do to implement ndelay()).
> 
> Fixes: c8ee038bd148 ("m68k: Implement ndelay() based on the existing udelay() logic")
> Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>

Thanks for fixing it.

Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>


-- 
Miquel Raynal, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com

  parent reply	other threads:[~2018-05-14  7:23 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-13 14:02 [PATCH] m68k: Implement ndelay() as an inline function to force type checking/casting Boris Brezillon
2018-05-13 14:02 ` Boris Brezillon
2018-05-13 22:38 ` Andy Shevchenko
2018-05-13 22:38   ` Andy Shevchenko
2018-05-14  7:23 ` Miquel Raynal [this message]
2018-05-14  7:23   ` Miquel Raynal
2018-05-14  9:29 ` Geert Uytterhoeven
2018-05-14  9:29   ` Geert Uytterhoeven
2018-05-14 10:52   ` Geert Uytterhoeven
2018-05-14 10:52     ` Geert Uytterhoeven

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