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Message-ID: <5DA09659.9070401@huawei.com>
Date:   Fri, 11 Oct 2019 22:48:57 +0800
From:   zhong jiang <zhongjiang@huawei.com>
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To:     Greg KH <gregkh@linuxfoundation.org>
CC:     Jerome Pouiller <Jerome.Pouiller@silabs.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] staging: wfx: fix an undefined reference error when CONFIG_MMC=m
References: <1570762939-8735-1-git-send-email-zhongjiang@huawei.com> <20191011042609.GB938845@kroah.com> <3864047.FfxYVOUlJ1@pc-42> <20191011090256.GC1076760@kroah.com>
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On 2019/10/11 17:02, Greg KH wrote:
> On Fri, Oct 11, 2019 at 08:40:08AM +0000, Jerome Pouiller wrote:
>> On Friday 11 October 2019 06:26:16 CEST Greg KH wrote:
>>> CAUTION: This email originated from outside of the organization. Do not 
>> click links or open attachments unless you recognize the sender and know the 
>> content is safe.
>>>
>>> On Fri, Oct 11, 2019 at 11:02:19AM +0800, zhong jiang wrote:
>>>> I hit the following error when compile the kernel.
>>>>
>>>> drivers/staging/wfx/main.o: In function `wfx_core_init':
>>>> /home/z00352263/linux-next/linux-next/drivers/staging/wfx/main.c:488: 
>> undefined reference to `sdio_register_driver'
>>>> drivers/staging/wfx/main.o: In function `wfx_core_exit':
>>>> /home/z00352263/linux-next/linux-next/drivers/staging/wfx/main.c:496: 
>> undefined reference to `sdio_unregister_driver'
>>>> drivers/staging/wfx/main.o:(.debug_addr+0x1a8): undefined reference to 
>> `sdio_register_driver'
>>>> drivers/staging/wfx/main.o:(.debug_addr+0x6f0): undefined reference to 
>> `sdio_unregister_driver'
>>>> Signed-off-by: zhong jiang <zhongjiang@huawei.com>
>>>> ---
>>>>  drivers/staging/wfx/Kconfig  | 3 ++-
>>>>  drivers/staging/wfx/Makefile | 5 +++--
>>>>  2 files changed, 5 insertions(+), 3 deletions(-)
>>>>
>>>> diff --git a/drivers/staging/wfx/Kconfig b/drivers/staging/wfx/Kconfig
>>>> index 9b8a1c7..4d045513 100644
>>>> --- a/drivers/staging/wfx/Kconfig
>>>> +++ b/drivers/staging/wfx/Kconfig
>>>> @@ -1,7 +1,8 @@
>>>>  config WFX
>>>>       tristate "Silicon Labs wireless chips WF200 and further"
>>>>       depends on MAC80211
>>>> -     depends on (SPI || MMC)
>>>> +     depends on SPI
>>>> +     select MMC
>>> How about:
>>>         depends on (SPI && MMC)
>> I dislike to force user to enable both buses while only one of them is 
>> sufficient. I would prefer to keep current dependencies and to add
>> #ifdef around problematic functions.
> Yes, that's the better thing to do here overall.
>
> zhong, can you work on that?
I will repost as Jerome said.  Thanks

Sincerely,
zhong jiang
> thanks,
>
> greg k-h
>
> .
>