netdev - Re: [PATCH] brcmfmac: BRCMFMAC should depend on HAS

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Message-ID: <5400C3E8.9040500@broadcom.com>
Date:	Fri, 29 Aug 2014 11:18:16 -0700
From:	Franky Lin <frankyl@...adcom.com>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Brett Rudley <brudley@...adcom.com>,
	"John W. Linville" <linville@...driver.com>,
	"David S. Miller" <davem@...emloft.net>
CC:	<linux-wireless@...r.kernel.org>,
	<brcm80211-dev-list@...adcom.com>, <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] brcmfmac: BRCMFMAC should depend on HAS_DMA

Hi Geert,

On 8/29/2014 9:24 AM, Geert Uytterhoeven wrote:
> If NO_DMA=y:
>
> drivers/built-in.o: In function `brcmf_msgbuf_release_array':
> msgbuf.c:(.text+0x34dbbe): undefined reference to `dma_unmap_single'
> drivers/built-in.o: In function `brcmf_proto_msgbuf_detach':
> (.text+0x34dca4): undefined reference to `dma_free_coherent'
> drivers/built-in.o: In function `brcmf_msgbuf_get_pktid':
> msgbuf.c:(.text+0x34dd2a): undefined reference to `dma_unmap_single'
> drivers/built-in.o: In function `brcmf_msgbuf_alloc_pktid':
> msgbuf.c:(.text+0x34de12): undefined reference to `dma_map_single'
> msgbuf.c:(.text+0x34de20): undefined reference to `dma_mapping_error'
> drivers/built-in.o: In function `brcmf_msgbuf_remove_flowring':
> msgbuf.c:(.text+0x34e3d6): undefined reference to `dma_free_coherent'
> drivers/built-in.o: In function `brcmf_msgbuf_flowring_create':
> msgbuf.c:(.text+0x34e4f8): undefined reference to `dma_alloc_coherent'
> drivers/built-in.o: In function `brcmf_proto_msgbuf_attach':
> (.text+0x34f5fe): undefined reference to `dma_alloc_coherent'
> drivers/built-in.o: In function `brcmf_proto_msgbuf_attach':
> (.text+0x34f798): undefined reference to `dma_free_coherent'
>
> Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
> ---
>   drivers/net/wireless/brcm80211/Kconfig | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/wireless/brcm80211/Kconfig b/drivers/net/wireless/brcm80211/Kconfig
> index b8e2561ea645..2e0da8925834 100644
> --- a/drivers/net/wireless/brcm80211/Kconfig
> +++ b/drivers/net/wireless/brcm80211/Kconfig
> @@ -19,7 +19,7 @@ config BRCMSMAC
>
>   config BRCMFMAC
>   	tristate "Broadcom IEEE802.11n embedded FullMAC WLAN driver"
> -	depends on CFG80211
> +	depends on CFG80211A && HAS_DMA
>   	select BRCMUTIL
>   	---help---
>   	  This module adds support for embedded wireless adapters based on

Thanks for reporting this. All complaints are from msgbuf code. So the 
dependency should belong to BRCMFMAC_PCIE not BRCMFMAC.

Thanks,
Franky
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