linux-kernel - Re: [RFC PATCH 19/40] soundwire: bus: improve dynamic debug comments for enumeration

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Date:   Fri, 2 Aug 2019 22:30:41 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        tiwai@...e.de, broonie@...nel.org, gregkh@...uxfoundation.org,
        jank@...ence.com, srinivas.kandagatla@...aro.org,
        slawomir.blauciak@...el.com, Sanyog Kale <sanyog.r.kale@...el.com>
Subject: Re: [RFC PATCH 19/40] soundwire: bus: improve dynamic debug comments
 for enumeration

On 25-07-19, 18:40, Pierre-Louis Bossart wrote:
> update comments to provide better understanding of enumeration flows.
> 
> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
> ---
>  drivers/soundwire/bus.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c
> index bca378806d00..2354675ef104 100644
> --- a/drivers/soundwire/bus.c
> +++ b/drivers/soundwire/bus.c
> @@ -483,7 +483,8 @@ static int sdw_assign_device_num(struct sdw_slave *slave)
>  
>  	ret = sdw_write(slave, SDW_SCP_DEVNUMBER, dev_num);
>  	if (ret < 0) {
> -		dev_err(&slave->dev, "Program device_num failed: %d\n", ret);
> +		dev_err(&slave->dev, "Program device_num %d failed: %d\n",
> +			dev_num, ret);
>  		return ret;
>  	}
>  
> @@ -540,6 +541,7 @@ static int sdw_program_device_num(struct sdw_bus *bus)
>  	do {
>  		ret = sdw_transfer(bus, &msg);
>  		if (ret == -ENODATA) { /* end of device id reads */
> +			dev_dbg(bus->dev, "No more devices to enumerate\n");
>  			ret = 0;
>  			break;
>  		}
> @@ -982,6 +984,7 @@ int sdw_handle_slave_status(struct sdw_bus *bus,
>  	int i, ret = 0;
>  
>  	if (status[0] == SDW_SLAVE_ATTACHED) {
> +		dev_err(bus->dev, "Slave attached, programming device number\n");

This should be debug level

-- 
~Vinod