diff mbox series

[V2,2/2] usb: gadget: u_ether: Don't warn in gether_setup_name_default()

Message ID 20230116155545.101391-2-jonathanh@nvidia.com
State Handled Elsewhere
Headers show
Series [V2,1/2] usb: gadget: u_ether: Improve print in gether_setup_name_default() | expand

Commit Message

Jon Hunter Jan. 16, 2023, 3:55 p.m. UTC
The function gether_setup_name_default() is called by various USB
ethernet gadget drivers. This function always generates the MAC address
for the ethernet gadget device and always prints a warning when
generating the MAC address. Given that these messages are expected, make
these debug prints instead of warnings.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
---
V1 -> V2: Changed print to debug instead of info.

 drivers/usb/gadget/function/u_ether.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Andrzej Pietrasiewicz Jan. 17, 2023, 2:13 p.m. UTC | #1
Hi,

W dniu 16.01.2023 o 16:55, Jon Hunter pisze:
> The function gether_setup_name_default() is called by various USB
> ethernet gadget drivers. This function always generates the MAC address
> for the ethernet gadget device and always prints a warning when
> generating the MAC address. Given that these messages are expected, make
> these debug prints instead of warnings.
> 
> Signed-off-by: Jon Hunter <jonathanh@nvidia.com>

Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>

> ---
> V1 -> V2: Changed print to debug instead of info.
> 
>   drivers/usb/gadget/function/u_ether.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c
> index be8e7b448933..8feb40e38137 100644
> --- a/drivers/usb/gadget/function/u_ether.c
> +++ b/drivers/usb/gadget/function/u_ether.c
> @@ -845,13 +845,13 @@ struct net_device *gether_setup_name_default(const char *netname)
>   	snprintf(net->name, sizeof(net->name), "%s%%d", netname);
>   
>   	eth_random_addr(dev->dev_mac);
> -	pr_warn("using random self ethernet address %pM\n", dev->dev_mac);
> +	pr_debug("using random self ethernet address %pM\n", dev->dev_mac);
>   
>   	/* by default we always have a random MAC address */
>   	net->addr_assign_type = NET_ADDR_RANDOM;
>   
>   	eth_random_addr(dev->host_mac);
> -	pr_warn("using random host ethernet address %pM\n", dev->host_mac);
> +	pr_debug("using random host ethernet address %pM\n", dev->host_mac);
>   
>   	net->netdev_ops = &eth_netdev_ops;
>
Andrzej Pietrasiewicz Jan. 17, 2023, 2:38 p.m. UTC | #2
Hi again,

W dniu 17.01.2023 o 15:13, Andrzej Pietrasiewicz pisze:
> Hi,
> 
> W dniu 16.01.2023 o 16:55, Jon Hunter pisze:
>> The function gether_setup_name_default() is called by various USB
>> ethernet gadget drivers. This function always generates the MAC address
>> for the ethernet gadget device and always prints a warning when
>> generating the MAC address. Given that these messages are expected, make
>> these debug prints instead of warnings.

Actually, I have second thoughts about this commit message.
If the messages were expected, why would you change them?

I think that just as in PATCH V2 1/1, there's an implicit context required
to understand your commit message: it answers the question "why don't we
just remove these messages altogether?" Answer: "because they might be expected
by some guys, so let's keep them".

IMO, what _is_ expected is random selection of addresses. So, something on
the lines of this would look better to me:

"Randomly selecting host and device MAC addresses is a proper and expected
default behavior. A properly working driver should be silent, so don't warn
the user about default MAC addresses selection happening and convert the
warnings into debug messages."

>>
>> Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
> 
> Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>

With the above taken into account I uphold my R-b tag.

Andrzej

> 
>> ---
>> V1 -> V2: Changed print to debug instead of info.
>>
>>   drivers/usb/gadget/function/u_ether.c | 4 ++--
>>   1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/usb/gadget/function/u_ether.c 
>> b/drivers/usb/gadget/function/u_ether.c
>> index be8e7b448933..8feb40e38137 100644
>> --- a/drivers/usb/gadget/function/u_ether.c
>> +++ b/drivers/usb/gadget/function/u_ether.c
>> @@ -845,13 +845,13 @@ struct net_device *gether_setup_name_default(const char 
>> *netname)
>>       snprintf(net->name, sizeof(net->name), "%s%%d", netname);
>>       eth_random_addr(dev->dev_mac);
>> -    pr_warn("using random self ethernet address %pM\n", dev->dev_mac);
>> +    pr_debug("using random self ethernet address %pM\n", dev->dev_mac);
>>       /* by default we always have a random MAC address */
>>       net->addr_assign_type = NET_ADDR_RANDOM;
>>       eth_random_addr(dev->host_mac);
>> -    pr_warn("using random host ethernet address %pM\n", dev->host_mac);
>> +    pr_debug("using random host ethernet address %pM\n", dev->host_mac);
>>       net->netdev_ops = &eth_netdev_ops;
>
diff mbox series

Patch

diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c
index be8e7b448933..8feb40e38137 100644
--- a/drivers/usb/gadget/function/u_ether.c
+++ b/drivers/usb/gadget/function/u_ether.c
@@ -845,13 +845,13 @@  struct net_device *gether_setup_name_default(const char *netname)
 	snprintf(net->name, sizeof(net->name), "%s%%d", netname);
 
 	eth_random_addr(dev->dev_mac);
-	pr_warn("using random self ethernet address %pM\n", dev->dev_mac);
+	pr_debug("using random self ethernet address %pM\n", dev->dev_mac);
 
 	/* by default we always have a random MAC address */
 	net->addr_assign_type = NET_ADDR_RANDOM;
 
 	eth_random_addr(dev->host_mac);
-	pr_warn("using random host ethernet address %pM\n", dev->host_mac);
+	pr_debug("using random host ethernet address %pM\n", dev->host_mac);
 
 	net->netdev_ops = &eth_netdev_ops;