[alsa-devel] [PATCH v2 5/6] ASoC: Intel: Add Skylake IPC library

[Vinod Koul]

On Thu, Jul 09, 2015 at 10:56:13AM +0530, Vinod Koul wrote:
> On Wed, Jul 08, 2015 at 07:46:27PM +0100, Mark Brown wrote:
> > On Fri, Jul 03, 2015 at 04:04:06PM +0530, Vinod Koul wrote:
> > 
> > Mostly looks good - a few small things here, nothing too major:
> > 
> > > +static struct ipc_message *skl_ipc_reply_find_msg(struct sst_generic_ipc *ipc,
> > > +		u64 ipc_header)
> > > +{
> > > +	struct ipc_message *msg = NULL;
> > > +	struct skl_ipc_header *header = (struct skl_ipc_header *)(&ipc_header);
> > > +
> > > +	if (list_empty(&ipc->rx_list)) {
> > > +		dev_err(ipc->dev, "ipc: rx list is empty but received 0x%x\n",
> > > +			header->primary);
> > > +		goto out;
> > > +	}
> > > +
> > > +	msg = list_first_entry(&ipc->rx_list, struct ipc_message, list);
> > 
> > This says it finds the message but it appears to just return the head of
> > the list without reference to the supplied header other than casting it
> > to skl_ipc_header and possibly using it in an error print?
> Yes you are right. Actually currently we dont expect to queue up so we never
> bother looking up. But yes intention to find messages when they are quued, I
> will add that bit
And it doesn't work. The message comparison fails as we don't have a cookie
for replies :(

That would be reworked in future with FW. For now I am going to rename this
to skl_ipc_reply_get_msg() as it essentially gets first and only message in
queue

-- 
~Vinod
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