Re: [PATCH 16/26] dmaengine: Convert to new IDA API

[Matthew Wilcox]

On Sun, Jun 24, 2018 at 09:57:45AM +0200, Lars-Peter Clausen wrote:
> > +	int rc = ida_alloc(&dma_ida, GFP_KERNEL);
> >  
> > +	if (rc >= 0)
> > +		device->dev_id = rc;
> >  	return rc;
> 
> This used to return 0 on success, now it returns the ID. That wont work
> considering that it is used like this
> 
>     rc = get_dma_id(device);
>     if (rc != 0) ...

Thanks!  I changed it to this:

static int get_dma_id(struct dma_device *device)
{
        int rc = ida_alloc(&dma_ida, GFP_KERNEL);

        if (rc < 0)
                return rc;
        device->dev_id = rc;
        return 0;
}