public inbox for linux-kernel@vger.kernel.org
 help / color / mirror / Atom feed
From: Andrew Morton <akpm@osdl.org>
To: Miles Bader <miles@gnu.org>
Cc: torvalds@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] v850: Round up length passed to slram driver to a multiple of SLRAM_BLK_SZ
Date: Thu, 1 Sep 2005 23:50:40 -0700	[thread overview]
Message-ID: <20050901235040.4ecc8bbf.akpm@osdl.org> (raw)
In-Reply-To: <20050902061330.BEF2B4DC@dhapc248.dev.necel.com>

Miles Bader <miles@gnu.org> wrote:
>
>  +
>  +/* From drivers/mtd/devices/slram.c */
>  +#define SLRAM_BLK_SZ 0x4000
>  +
>   /* Set the root filesystem to be the given memory region.
>      Some parameter may be appended to CMD_LINE.  */
>   void set_mem_root (void *addr, size_t len, char *cmd_line)
>   {
>  +	/* Some sort of idiocy in MTD means we must supply a length that's
>  +	   a multiple of SLRAM_BLK_SZ.  We just round up the real length,
>  +	   as the file system shouldn't attempt to access anything beyond
>  +	   the end of the image anyway.  */
>  +	len = (((len - 1) + SLRAM_BLK_SZ) / SLRAM_BLK_SZ) * SLRAM_BLK_SZ;

If SLRAM_BLK_SZ will always be a power of two, there's kernel.h:ALIGN()..

      reply	other threads:[~2005-09-02  6:52 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-09-02  6:13 [PATCH] v850: Round up length passed to slram driver to a multiple of SLRAM_BLK_SZ Miles Bader
2005-09-02  6:50 ` Andrew Morton [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20050901235040.4ecc8bbf.akpm@osdl.org \
    --to=akpm@osdl.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=miles@gnu.org \
    --cc=torvalds@osdl.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox