Messages in this thread | | | Subject | Re: [PATCH v9 1/3] dmaengine: ptdma: Initial driver for the AMD PTDMA | From | Sanjay R Mehta <> | Date | Wed, 16 Jun 2021 10:24:52 +0530 |
| |
On 6/16/2021 9:45 AM, Vinod Koul wrote: > [CAUTION: External Email] > > On 15-06-21, 16:50, Sanjay R Mehta wrote: > >>>> +static struct pt_device *pt_alloc_struct(struct device *dev) >>>> +{ >>>> + struct pt_device *pt; >>>> + >>>> + pt = devm_kzalloc(dev, sizeof(*pt), GFP_KERNEL); >>>> + >>>> + if (!pt) >>>> + return NULL; >>>> + pt->dev = dev; >>>> + pt->ord = atomic_inc_return(&pt_ordinal); >>> >>> What is the use of this number? >>> >> >> There are eight similar instances of this DMA engine on AMD SOC. >> It is to differentiate each of these instances. > > Are they individual device objects? >
Yes, they are individual device objects.
> -- > ~Vinod >
| |