linux-kernel - Re: [PATCH] arch/avr32: Fix build failure for avr32 caused by typo

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Date:	Mon, 28 Dec 2009 10:59:30 +0100
From:	Peter Hüwe <PeterHuewe@....de>
To:	"Hans-Christian Egtvedt" <hans-christian.egtvedt@...el.com>
Cc:	Nicolas Ferre <nicolas.ferre@...el.com>,
	Haavard Skinnemoen <hskinnemoen@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Ma <pma@...iamatech.com>, linux-kernel@...r.kernel.org,
	linux-mmc@...r.kernel.org
Subject: Re: [PATCH] arch/avr32: Fix build failure for avr32 caused by typo

Am Montag 28 Dezember 2009 09:13:18 schrieb Hans-Christian Egtvedt:
> On Fri, 25 Dec 2009 20:08:45 +0100
> 
> Peter Huewe <PeterHuewe@....de> wrote:
> > This patch fixes a build failure introduced by the patch
> >   atmel-mci: change use of dma slave interface by Nicolas Ferre
> > by changing mci_dma_slave to the correct name of mci_dma_data
> >
> > This should make the avr32 tree build again.
> 
> Ah, great, I have not gotten around to test this yet. Thanks for the
> patch. I've done some minor changes and also fixed the kzalloc/kfree
> error handling. Please see the inlined patch below.
> 

> @@ -1344,7 +1344,7 @@ at32_add_device_mci(unsigned int id, struct
>  mci_platform_data *data) ARRAY_SIZE(atmel_mci0_resource)))
>  		goto fail;
> 
> -	slave = kzalloc(sizeof(struct mci_dma_slave), GFP_KERNEL);
> +	slave = kzalloc(sizeof(struct mci_dma_data), GFP_KERNEL);
> 
>  	slave->sdata.dma_dev = &dw_dmac0_device.dev;
>  	slave->sdata.reg_width = DW_DMA_SLAVE_WIDTH_32BIT;


Great, thanks for the update.
The only thing that still catches my eye is that the kzalloc line can fail, so 
you should perhaps add something like
if (!slave) {
	printk(KERN_ERR "No memory left for at32ap700x: at32_add_device_mc");
	goto fail;
}

(not tested :)


Apart from that:
Acked-By: Peter Huewe <peterhuewe@....de>


Thanks and best regards,
Peter
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