linux-kernel - Re: linux-next: Tree for December 15 (MTD)

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Date:	Mon, 15 Dec 2008 15:27:24 -0800
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
CC:	linux-next@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	David Woodhouse <dwmw2@...radead.org>,
	linux-mtd@...ts.infradead.org
Subject: Re: linux-next: Tree for December 15 (MTD)

Stephen Rothwell wrote:
> Hi all,
> 
> Changes since 20081212:
> 
> New tree:
> 	boot-params
> 
> Undropped tree:
> 	mtd


On i386 builds, I'm seeing

build-r7137.out:mtd_dataflash.c:(.text+0x10dff4): undefined reference to `__umoddi3'
build-r7137.out:mtd_dataflash.c:(.text+0x10e010): undefined reference to `__umoddi3'
build-r7137.out:mtd_dataflash.c:(.text+0x10e09f): undefined reference to `__udivdi3'

which are caused by % and / operations where the denominator is a variable:

	/* Sanity checks */
	if ((instr->addr + instr->len) > mtd->size
			|| (instr->len % priv->page_size) != 0
			|| (instr->addr % priv->page_size) != 0)
		return -EINVAL;

...
		/* Calculate flash page address; use block erase (for speed) if
		 * we're at a block boundary and need to erase the whole block.
		 */
		pageaddr = instr->addr / priv->page_size;


~Randy


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