From: Vinod Koul <vkoul@kernel.org>
To: Sanjay R Mehta <sanmehta@amd.com>
Cc: Sanjay R Mehta <Sanju.Mehta@amd.com>,
gregkh@linuxfoundation.org, dan.j.williams@intel.com,
Thomas.Lendacky@amd.com, Shyam-sundar.S-k@amd.com,
Nehal-bakulchandra.Shah@amd.com, robh@kernel.org,
mchehab+samsung@kernel.org, davem@davemloft.net,
linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org
Subject: Re: [PATCH v9 1/3] dmaengine: ptdma: Initial driver for the AMD PTDMA
Date: Wed, 16 Jun 2021 09:45:10 +0530 [thread overview]
Message-ID: <YMl6zpjVHls8bk/A@vkoul-mobl> (raw)
In-Reply-To: <94bba5dd-b755-81d0-de30-ce3cdaa3f241@amd.com>
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?
--
~Vinod
next prev parent reply other threads:[~2021-06-16 4:15 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-02 17:22 [PATCH v9 0/3] Add support for AMD PTDMA controller driver Sanjay R Mehta
2021-06-02 17:22 ` [PATCH v9 1/3] dmaengine: ptdma: Initial driver for the AMD PTDMA Sanjay R Mehta
2021-06-08 17:39 ` Vinod Koul
2021-06-15 11:20 ` Sanjay R Mehta
2021-06-16 4:15 ` Vinod Koul [this message]
2021-06-16 4:54 ` Sanjay R Mehta
2021-06-16 6:16 ` Greg KH
2021-06-16 6:57 ` Sanjay R Mehta
2021-06-16 7:17 ` Greg KH
2021-06-16 7:52 ` Vinod Koul
2021-06-16 7:59 ` Greg KH
2021-06-16 9:46 ` Sanjay R Mehta
2021-06-16 9:56 ` Vinod Koul
2021-06-16 12:00 ` Sanjay R Mehta
2021-06-16 12:23 ` Greg KH
2021-06-16 12:53 ` Sanjay R Mehta
2021-06-16 12:57 ` Greg KH
2021-06-02 17:22 ` [PATCH v9 2/3] dmaengine: ptdma: register PTDMA controller as a DMA resource Sanjay R Mehta
2021-06-08 18:56 ` Vinod Koul
2021-06-15 11:34 ` Sanjay R Mehta
2021-06-16 4:18 ` Vinod Koul
2021-06-16 5:23 ` Sanjay R Mehta
2021-06-20 3:52 ` Sanjay R Mehta
2021-06-02 17:22 ` [PATCH v9 3/3] dmaengine: ptdma: Add debugfs entries for PTDMA Sanjay R Mehta
2021-06-09 14:10 ` Vinod Koul
2021-06-15 11:18 ` Sanjay R Mehta
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