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Date:   Tue, 26 Sep 2023 05:54:34 +0000
From:   Wei Liu <wei.liu@kernel.org>
To:     Greg KH <gregkh@linuxfoundation.org>
Cc:     Nuno Das Neves <nunodasneves@linux.microsoft.com>,
        linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org,
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Subject: Re: [PATCH v3 15/15] Drivers: hv: Add modules to expose /dev/mshv to
 VMMs running on Hyper-V
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References: <1695407915-12216-1-git-send-email-nunodasneves@linux.microsoft.com>
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 <2023092342-staunch-chafe-1598@gregkh>
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 <2023092630-masculine-clinic-19b6@gregkh>
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On Tue, Sep 26, 2023 at 06:52:46AM +0200, Greg KH wrote:
> On Mon, Sep 25, 2023 at 05:07:24PM -0700, Nuno Das Neves wrote:
> > On 9/23/2023 12:58 AM, Greg KH wrote:
> > > Also, drivers should never call pr_*() calls, always use the proper
> > > dev_*() calls instead.
> > > 
> > 
> > We only use struct device in one place in this driver, I think that is the
> > only place it makes sense to use dev_*() over pr_*() calls.
> 
> Then the driver needs to be fixed to use struct device properly so that
> you do have access to it when you want to print messages.  That's a
> valid reason to pass around your device structure when needed.

Greg, ACRN and Nitro drivers do not pass around the device structure.
Instead, they rely on a global struct device. We can follow the same.

Nuno, I checked our code. We already have a misc device. We can use that
for dev_* calls.

Something like this:

   dev_warn(mshv_dev.this_device, "this is a warning message");

This should resolve Greg's concern.

Thanks,
Wei.

> 
> thanks,
> 
> greg k-h
>