linux-kernel - Re: [PATCH v2 RESEND] soc/fsl/qe: fix usb.c build errors

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Date:   Wed, 31 May 2023 09:29:24 +0200
From:   Nicolas Schier <nicolas@...sle.eu>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     linux-kernel@...r.kernel.org, kernel test robot <lkp@...el.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Leo Li <leoyang.li@....com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Qiang Zhao <qiang.zhao@....com>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        linux-arm-kernel@...ts.infradead.org,
        Kumar Gala <galak@...nel.crashing.org>
Subject: Re: [PATCH v2 RESEND] soc/fsl/qe: fix usb.c build errors

On Sun, May 21, 2023 at 03:52:16PM -0700 Randy Dunlap wrote:
> Fix build errors in soc/fsl/qe/usb.c when QUICC_ENGINE is not set.
> This happens when PPC_EP88XC is set, which selects CPM1 & CPM.
> When CPM is set, USB_FSL_QE can be set without QUICC_ENGINE
> being set. When USB_FSL_QE is set, QE_USB deafults to y, which
> causes build errors when QUICC_ENGINE is not set. Making
> QE_USB depend on QUICC_ENGINE prevents QE_USB from defaulting to y.
> 
> Fixes these build errors:
> 
> drivers/soc/fsl/qe/usb.o: in function `qe_usb_clock_set':
> usb.c:(.text+0x1e): undefined reference to `qe_immr'
> powerpc-linux-ld: usb.c:(.text+0x2a): undefined reference to `qe_immr'
> powerpc-linux-ld: usb.c:(.text+0xbc): undefined reference to `qe_setbrg'
> powerpc-linux-ld: usb.c:(.text+0xca): undefined reference to `cmxgcr_lock'
> powerpc-linux-ld: usb.c:(.text+0xce): undefined reference to `cmxgcr_lock'
> 
> Fixes: 5e41486c408e ("powerpc/QE: add support for QE USB clocks routing")
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> Reported-by: kernel test robot <lkp@...el.com>
> Link: https://lore.kernel.org/all/202301101500.pillNv6R-lkp@intel.com/
> Suggested-by: Michael Ellerman <mpe@...erman.id.au>
> Cc: Christophe Leroy <christophe.leroy@...roup.eu>
> Cc: Leo Li <leoyang.li@....com>
> Cc: Masahiro Yamada <masahiroy@...nel.org>
> Cc: Nicolas Schier <nicolas@...sle.eu>
> Cc: Qiang Zhao <qiang.zhao@....com>
> Cc: linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: Kumar Gala <galak@...nel.crashing.org>
> ---

I can reproduce the build error and confirm the build dependency fix (but I
have no hardware for testing).

Acked-by: Nicolas Schier <nicolas@...le.eu>



> v2: drop Anton Vorontsov <avorontsov@...mvista.com>; rebase/resend
> 
>  drivers/soc/fsl/qe/Kconfig |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff -- a/drivers/soc/fsl/qe/Kconfig b/drivers/soc/fsl/qe/Kconfig
> --- a/drivers/soc/fsl/qe/Kconfig
> +++ b/drivers/soc/fsl/qe/Kconfig
> @@ -62,6 +62,7 @@ config QE_TDM
>  
>  config QE_USB
>  	bool
> +	depends on QUICC_ENGINE
>  	default y if USB_FSL_QE
>  	help
>  	  QE USB Controller support

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