linux-kernel - Re: [PATCH RESEND v2] staging: wfx: fix an undefined reference error when CONFIG

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Date:   Fri, 11 Oct 2019 16:57:28 +0000
From:   Jerome Pouiller <Jerome.Pouiller@...abs.com>
To:     zhong jiang <zhongjiang@...wei.com>
CC:     "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH RESEND v2] staging: wfx: fix an undefined reference error
 when CONFIG_MMC=m

On Friday 11 October 2019 18:38:17 CEST 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'

For information, I cannot reproduce your issue (it does not mean that
the issue does not exist). In add, if you obtain undefined references,
it should only happen when CONFIG_MMC is not defined.

Can you check that your Modules.symvers is up-to-date (by running a
'make modules') ?


-- 
Jérôme Pouiller