netdev - Re: [net-next v4 11/12] ASoC: SOF: Create client driver for IPC test

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Date:   Wed, 27 May 2020 13:18:35 -0700
From:   Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>
To:     Jason Gunthorpe <jgg@...pe.ca>,
        Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Cc:     davem@...emloft.net, gregkh@...uxfoundation.org,
        netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
        nhorman@...hat.com, sassmann@...hat.com,
        pierre-louis.bossart@...ux.intel.com,
        Fred Oh <fred.oh@...ux.intel.com>
Subject: Re: [net-next v4 11/12] ASoC: SOF: Create client driver for IPC test

On Wed, 2020-05-20 at 09:56 -0300, Jason Gunthorpe wrote:
> On Wed, May 20, 2020 at 12:02:26AM -0700, Jeff Kirsher wrote:
> > +static const struct virtbus_dev_id sof_ipc_virtbus_id_table[] = {
> > +	{"sof-ipc-test"},
> > +	{},
> > +};
> > +
> > +static struct sof_client_drv sof_ipc_test_client_drv = {
> > +	.name = "sof-ipc-test-client-drv",
> > +	.type = SOF_CLIENT_IPC,
> > +	.virtbus_drv = {
> > +		.driver = {
> > +			.name = "sof-ipc-test-virtbus-drv",
> > +		},
> > +		.id_table = sof_ipc_virtbus_id_table,
> > +		.probe = sof_ipc_test_probe,
> > +		.remove = sof_ipc_test_remove,
> > +		.shutdown = sof_ipc_test_shutdown,
> > +	},
> > +};
> > +
> > +module_sof_client_driver(sof_ipc_test_client_drv);
> > +
> > +MODULE_DESCRIPTION("SOF IPC Test Client Driver");
> > +MODULE_LICENSE("GPL v2");
> > +MODULE_IMPORT_NS(SND_SOC_SOF_CLIENT);
> > +MODULE_ALIAS("virtbus:sof-ipc-test");
> 
> Usually the MODULE_ALIAS happens automatically rhough the struct
> virtbus_dev_id - is something missing in the enabling patches?
Hi Jason,

Without the MODULE_ALIAS,  the driver never probes when the virtual bus
device is registered. The MODULE_ALIAS is not different from the ones
we typically have in the platform drivers. Could you please give me
some pointers on what you think might be missing?

Thanks,
Rajnani