linux-kernel - Re: [PATCH] net/appletalk: LTPC needs virt_to

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Message-Id: <20150220.162859.1939233097658138953.davem@davemloft.net>
Date:	Fri, 20 Feb 2015 16:28:59 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	arnd@...db.de
Cc:	netdev@...r.kernel.org, acme@...stprotocols.net,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] net/appletalk: LTPC needs virt_to_bus

From: Arnd Bergmann <arnd@...db.de>
Date: Wed, 18 Feb 2015 20:48:54 +0100

> The ltpc driver is rather outdated and does not get built on most
> platforms because it requires the ISA_DMA_API symbol. However
> there are some ARM platforms that have ISA_DMA_API but no virt_to_bus,
> and they get this build error when enabling the ltpc driver.
> 
> drivers/net/appletalk/ltpc.c: In function 'handlefc':
> drivers/net/appletalk/ltpc.c:380:2: error: implicit declaration of function 'virt_to_bus' [-Werror=implicit-function-declaration]
>   set_dma_addr(dma,virt_to_bus(ltdmacbuf));
>   ^
> 
> This adds another dependency in Kconfig to avoid that configuration.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Applied, thank you.
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