linux-kernel - Re: [PATCH] NVMe: Fix compilation on architecturs without readq/writeq

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Message-ID: <CAMO-S2jO3pASmqzQrrFEzD_6QzD5BvLH6bTUm3i1PuCnzoMuRw@mail.gmail.com>
Date:	Sun, 5 Feb 2012 00:25:16 +0900
From:	Hitoshi Mitake <h.mitake@...il.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Matthew Wilcox <matthew.r.wilcox@...el.com>,
	Roland Dreier <roland@...estorage.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	James Bottomley <James.Bottomley@...allels.com>,
	linux-kernel@...r.kernel.org, hpa@...ux.intel.com
Subject: Re: [PATCH] NVMe: Fix compilation on architecturs without readq/writeq

On Tue, Jan 31, 2012 at 12:05, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
> On Mon, Jan 30, 2012 at 7:03 PM, Linus Torvalds
> <torvalds@...ux-foundation.org> wrote:
>>  val |= readl(addr+4) << 32;
>
> Oops. That needs a cast to u64 before the shift, of course.
>
> Take all code I write in emails with a pinch of salt - think of it
> more as pseudo-code than something that necessarily would work as-is.
>
>                  Linus

I'll take care, thanks :)


-- 
Hitoshi Mitake
h.mitake@...il.com
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