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Subject: Re: [PATCH] dynamic_debug: provide dynamic_hex_dump stub
To:     Arnd Bergmann <arnd@arndb.de>,
        Pensando Drivers <drivers@pensando.io>,
        "David S. Miller" <davem@davemloft.net>,
        Jason Baron <jbaron@akamai.com>
Cc:     Andrew Morton <akpm@linux-foundation.org>, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org
References: <20190918195607.2080036-1-arnd@arndb.de>
From:   Shannon Nelson <snelson@pensando.io>
Message-ID: <91b69922-926a-9c27-3a08-e2db2d7ea66f@pensando.io>
Date:   Wed, 18 Sep 2019 13:47:36 -0700
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On 9/18/19 12:55 PM, Arnd Bergmann wrote:
> The ionic driver started using dymamic_hex_dump(), but
> that is not always defined:
>
> drivers/net/ethernet/pensando/ionic/ionic_main.c:229:2: error: implicit declaration of function 'dynamic_hex_dump' [-Werror,-Wimplicit-function-declaration]
>
> Add a dummy implementation to use when CONFIG_DYNAMIC_DEBUG
> is disabled, printing nothing.
>
> Fixes: 938962d55229 ("ionic: Add adminq action")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
>   drivers/net/ethernet/pensando/ionic/ionic_lif.c  | 2 ++
>   drivers/net/ethernet/pensando/ionic/ionic_main.c | 2 ++
>   include/linux/dynamic_debug.h                    | 6 ++++++
>   3 files changed, 10 insertions(+)
>
> diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
> index db7c82742828..a255d24c8e40 100644
> --- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c
> +++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
> @@ -1,6 +1,8 @@
>   // SPDX-License-Identifier: GPL-2.0
>   /* Copyright(c) 2017 - 2019 Pensando Systems, Inc */
>   
> +#include <linux/printk.h>
> +#include <linux/dynamic_debug.h>
>   #include <linux/netdevice.h>
>   #include <linux/etherdevice.h>
>   #include <linux/rtnetlink.h>
> diff --git a/drivers/net/ethernet/pensando/ionic/ionic_main.c b/drivers/net/ethernet/pensando/ionic/ionic_main.c
> index 15e432386b35..aab311413412 100644
> --- a/drivers/net/ethernet/pensando/ionic/ionic_main.c
> +++ b/drivers/net/ethernet/pensando/ionic/ionic_main.c
> @@ -1,6 +1,8 @@
>   // SPDX-License-Identifier: GPL-2.0
>   /* Copyright(c) 2017 - 2019 Pensando Systems, Inc */
>   
> +#include <linux/printk.h>
> +#include <linux/dynamic_debug.h>
>   #include <linux/module.h>
>   #include <linux/netdevice.h>
>   #include <linux/utsname.h>
> diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h
> index 6c809440f319..4cf02ecd67de 100644
> --- a/include/linux/dynamic_debug.h
> +++ b/include/linux/dynamic_debug.h
> @@ -204,6 +204,12 @@ static inline int ddebug_dyndbg_module_param_cb(char *param, char *val,
>   	do { if (0) printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); } while (0)
>   #define dynamic_dev_dbg(dev, fmt, ...)					\
>   	do { if (0) dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__); } while (0)
> +#define dynamic_hex_dump(prefix_str, prefix_type, rowsize,		\
> +			 groupsize, buf, len, ascii)			\
> +	do { if (0)							\
> +		print_hex_dump(KERN_DEBUG, prefix_str, prefix_type,	\
> +				rowsize, groupsize, buf, len, ascii);	\
> +	} while (0)
>   #endif
>   
>   #endif

Thanks, I hadn't had a chance to look into that one yet.

Acked-by: Shannon Nelson <snelson@pensando.io>