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SubjectRe: [PATCH net-next V3] net: ena: Add a driver for Amazon Elastic Network Adapters (ENA)
On 2016/07/15 08:00, Leon Romanovsky wrote:
> On Thu, Jul 14, 2016 at 09:46:14AM +0300, Netanel Belgazal wrote:
> > This is a driver for the ENA family of networking devices.
> >
> > Signed-off-by: Netanel Belgazal <netanel@annapurnalabs.com>
> > ---
> >
> > Notes:
>
> ...
>
> > - Increase driver version to 1.0.2
>
> ...
>
> > +static void ena_get_drvinfo(struct net_device *dev,
> > + struct ethtool_drvinfo *info)
> > +{
> > + struct ena_adapter *adapter = netdev_priv(dev);
> > +
> > + strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
> > + strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
>
> Does module version give anything valuable in real life usage?
> Do you plan to bump version after every patch?
>
> Hint, NO.
>
[...]
> > +
> > +#define DRV_MODULE_VER_MAJOR 1
> > +#define DRV_MODULE_VER_MINOR 0
> > +#define DRV_MODULE_VER_SUBMINOR 1
> > +
> > +#define DRV_MODULE_NAME "ena"
> > +#ifndef DRV_MODULE_VERSION
> > +#define DRV_MODULE_VERSION \
> > + __stringify(DRV_MODULE_VER_MAJOR) "." \
> > + __stringify(DRV_MODULE_VER_MINOR) "." \
> > + __stringify(DRV_MODULE_VER_SUBMINOR)
> > +#endif
> > +#define DRV_MODULE_RELDATE "22-JUNE-2016"
>
> Please remove it, driver version is useless in real life kernel usage.
>

The release date might be a bit overkill but the driver version is
useful in the context of distribution kernels where users sometimes mix
and match newer drivers (ex: the intel sf.net drivers) with older
kernels. When a bug is reported, a quick look at the module version can
help indicate the provenance of the driver.
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