netdev - Re: [PATCH] net: mdio-octeon: Fix build error and Kconfig warning

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Message-ID: <b3444283-7a77-ece8-7ac6-41756aa7dc60@infradead.org>
Date:   Wed, 31 Jul 2019 14:55:32 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Nathan Chancellor <natechancellor@...il.com>, davem@...emloft.net
Cc:     andrew@...n.ch, broonie@...nel.org, devel@...verdev.osuosl.org,
        f.fainelli@...il.com, gregkh@...uxfoundation.org,
        hkallweit1@...il.com, kernel-build-reports@...ts.linaro.org,
        linux-arm-kernel@...ts.infradead.org, linux-next@...r.kernel.org,
        netdev@...r.kernel.org, willy@...radead.org,
        kbuild test robot <lkp@...el.com>
Subject: Re: [PATCH] net: mdio-octeon: Fix build error and Kconfig warning

On 7/31/19 11:50 AM, Nathan Chancellor wrote:
> arm allyesconfig warns:
> 
> WARNING: unmet direct dependencies detected for MDIO_OCTEON
>   Depends on [n]: NETDEVICES [=y] && MDIO_DEVICE [=y] && MDIO_BUS [=y]
> && 64BIT && HAS_IOMEM [=y] && OF_MDIO [=y]
>   Selected by [y]:
>   - OCTEON_ETHERNET [=y] && STAGING [=y] && (CAVIUM_OCTEON_SOC &&
> NETDEVICES [=y] || COMPILE_TEST [=y])
> 
> and errors:
> 
> In file included from ../drivers/net/phy/mdio-octeon.c:14:
> ../drivers/net/phy/mdio-octeon.c: In function 'octeon_mdiobus_probe':
> ../drivers/net/phy/mdio-cavium.h:111:36: error: implicit declaration of
> function 'writeq'; did you mean 'writeb'?
> [-Werror=implicit-function-declaration]
>   111 | #define oct_mdio_writeq(val, addr) writeq(val, (void *)addr)
>       |                                    ^~~~~~
> ../drivers/net/phy/mdio-octeon.c:56:2: note: in expansion of macro
> 'oct_mdio_writeq'
>    56 |  oct_mdio_writeq(smi_en.u64, bus->register_base + SMI_EN);
>       |  ^~~~~~~~~~~~~~~
> cc1: some warnings being treated as errors
> 
> This allows MDIO_OCTEON to be built with COMPILE_TEST as well and
> includes the proper header for readq/writeq. This does not address
> the several -Wint-to-pointer-cast and -Wpointer-to-int-cast warnings
> that appeared as a result of commit 171a9bae68c7 ("staging/octeon:
> Allow test build on !MIPS") in these files.
> 
> Fixes: 171a9bae68c7 ("staging/octeon: Allow test build on !MIPS")
> Reported-by: kbuild test robot <lkp@...el.com>
> Reported-by: Mark Brown <broonie@...nel.org>
> Reported-by: Randy Dunlap <rdunlap@...radead.org>
> Signed-off-by: Nathan Chancellor <natechancellor@...il.com>


With today's linux-next (20190731), I am still seeing a Kconfig warning and
build errors (building for i386):

and applying Greg's "depends on NETDEVICES" patch and this patch:

WARNING: unmet direct dependencies detected for MDIO_OCTEON
  Depends on [n]: NETDEVICES [=y] && MDIO_DEVICE [=m] && MDIO_BUS [=m] && (64BIT [=n] || COMPILE_TEST [=y]) && HAS_IOMEM [=y] && OF_MDIO [=n]
  Selected by [m]:
  - OCTEON_ETHERNET [=m] && STAGING [=y] && (CAVIUM_OCTEON_SOC || COMPILE_TEST [=y]) && NETDEVICES [=y]

ERROR: "cavium_mdiobus_write" [drivers/net/phy/mdio-octeon.ko] undefined!
ERROR: "cavium_mdiobus_read" [drivers/net/phy/mdio-octeon.ko] undefined!


kernel .config file is attached.

Am I missing another patch?

thanks.

> ---
>  drivers/net/phy/Kconfig       | 2 +-
>  drivers/net/phy/mdio-cavium.h | 2 ++
>  2 files changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
> index 20f14c5fbb7e..ed2edf4b5b0e 100644
> --- a/drivers/net/phy/Kconfig
> +++ b/drivers/net/phy/Kconfig
> @@ -159,7 +159,7 @@ config MDIO_MSCC_MIIM
>  
>  config MDIO_OCTEON
>  	tristate "Octeon and some ThunderX SOCs MDIO buses"
> -	depends on 64BIT
> +	depends on 64BIT || COMPILE_TEST
>  	depends on HAS_IOMEM && OF_MDIO
>  	select MDIO_CAVIUM
>  	help
> diff --git a/drivers/net/phy/mdio-cavium.h b/drivers/net/phy/mdio-cavium.h
> index ed5f9bb5448d..b7f89ad27465 100644
> --- a/drivers/net/phy/mdio-cavium.h
> +++ b/drivers/net/phy/mdio-cavium.h
> @@ -108,6 +108,8 @@ static inline u64 oct_mdio_readq(u64 addr)
>  	return cvmx_read_csr(addr);
>  }
>  #else
> +#include <linux/io-64-nonatomic-lo-hi.h>
> +
>  #define oct_mdio_writeq(val, addr)	writeq(val, (void *)addr)
>  #define oct_mdio_readq(addr)		readq((void *)addr)
>  #endif
> 


-- 
~Randy

Download attachment "cavium.i386.config" of type "application/x-config" (107345 bytes)