From: Greg KH <gregkh@linuxfoundation.org>
To: Leon Romanovsky <leon@kernel.org>
Cc: "David E. Box" <david.e.box@linux.intel.com>,
lee.jones@linaro.org, hdegoede@redhat.com, bhelgaas@google.com,
andriy.shevchenko@linux.intel.com, srinivas.pandruvada@intel.com,
shuah@kernel.org, mgross@linux.intel.com,
linux-kernel@vger.kernel.org,
platform-driver-x86@vger.kernel.org,
linux-kselftest@vger.kernel.org, linux-pci@vger.kernel.org
Subject: Re: [V2 2/6] driver core: auxiliary bus: Add driver data helpers
Date: Wed, 8 Dec 2021 09:43:37 +0100 [thread overview]
Message-ID: <YbBwOb6JvWkT3JWI@kroah.com> (raw)
In-Reply-To: <YbBtjSNz8z34czeN@unreal>
On Wed, Dec 08, 2021 at 10:32:13AM +0200, Leon Romanovsky wrote:
> On Wed, Dec 08, 2021 at 08:07:39AM +0100, Greg KH wrote:
> > On Wed, Dec 08, 2021 at 09:03:16AM +0200, Leon Romanovsky wrote:
> > > On Tue, Dec 07, 2021 at 09:14:44AM -0800, David E. Box wrote:
> > > > Adds get/set driver data helpers for auxiliary devices.
> > > >
> > > > Signed-off-by: David E. Box <david.e.box@linux.intel.com>
> > > > Reviewed-by: Mark Gross <markgross@kernel.org>
> > > > ---
> > > > V2
> > > > - No changes
> > > >
> > > > include/linux/auxiliary_bus.h | 10 ++++++++++
> > > > 1 file changed, 10 insertions(+)
> > >
> > > I would really like to see an explanation why such obfuscation is really
> > > needed. dev_*_drvdata() is a standard way to access driver data.
> >
> > Lots of busses have this helper. This is nothing new at all, and is
> > nice to have. Look at all of the calls to dev_get_drvdata() in
> > include/linux/ for the examples.
>
> I looked and this is why I asked. From the point of person who does
> reviews and refactoring, such obfuscations are evil.
Then you must consider about 80 busses evil :)
Again, this is a very common helper pattern in the kernel, one that we
have had for decades now. It allows a driver writer to only worry about
the bus apis for that specific bus, and not have to dive down into the
driver core functions at all. What is wrong with that?
> If I understand your correctly, the explanation is just copy/paste, right?
I do not understand what you mean by this, sorry.
greg k-h
next prev parent reply other threads:[~2021-12-08 8:43 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-07 17:14 [V2 0/6] Auxiliary bus driver support for Intel PCIe VSEC/DVSEC David E. Box
2021-12-07 17:14 ` [V2 1/6] PCI: Add #defines for accessing PCIe DVSEC fields David E. Box
2021-12-07 17:14 ` [V2 2/6] driver core: auxiliary bus: Add driver data helpers David E. Box
2021-12-07 17:35 ` Andy Shevchenko
2021-12-08 7:03 ` Leon Romanovsky
2021-12-08 7:07 ` Greg KH
2021-12-08 8:32 ` Leon Romanovsky
2021-12-08 8:43 ` Greg KH [this message]
2021-12-08 9:12 ` Leon Romanovsky
2021-12-08 10:14 ` Andy Shevchenko
2021-12-08 10:48 ` Leon Romanovsky
2021-12-08 8:43 ` Lee Jones
2021-12-08 8:47 ` Greg KH
2021-12-08 9:13 ` Lee Jones
2021-12-08 10:15 ` Andy Shevchenko
2021-12-09 16:32 ` Bjorn Helgaas
2021-12-09 16:54 ` Andy Shevchenko
2021-12-08 9:18 ` Leon Romanovsky
2021-12-07 17:14 ` [V2 3/6] platform/x86/intel: Move intel_pmt from MFD to Auxiliary Bus David E. Box
2021-12-07 17:14 ` [V2 4/6] platform/x86: Add Intel Software Defined Silicon driver David E. Box
2021-12-08 7:14 ` Leon Romanovsky
2021-12-08 10:42 ` David E. Box
2021-12-08 10:56 ` Leon Romanovsky
2021-12-07 17:14 ` [V2 5/6] sample/sdsi: Sample of SDSi provisiong using sysfs David E. Box
2021-12-07 17:14 ` [V2 6/6] selftests: sdsi: test sysfs setup David E. Box
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