Re: [PATCH] i2c: virtio: Add support for zero-length requests

[Viresh Kumar]

On 22-10-21, 14:51, Jie Deng wrote:
> > +	if (!virtio_has_feature(vdev, VIRTIO_I2C_F_ZERO_LENGTH_REQUEST)) {
> > +		dev_err(&vdev->dev, "Zero-length request feature is mandatory\n");
> > +		return -EINVAL;
> 
> 
> It might be better to return -EOPNOTSUPP ?

Maybe that or one of these:

#define	EBADE		52	/* Invalid exchange */
#define	EPROTO		71	/* Protocol error */
#define	EPFNOSUPPORT	96	/* Protocol family not supported */
#define	ECONNREFUSED	111	/* Connection refused */

Arnd, any suggestions ? This is about the mandatory feature not being offered by
the device.

-- 
viresh