From: Mark Brown <broonie@kernel.org>
To: Robin Murphy <robin.murphy@arm.com>
Cc: "Dan Carpenter" <dan.carpenter@oracle.com>,
"Lorenzo Pieralisi" <lorenzo.pieralisi@arm.com>,
"Simon Xue" <xxm@rock-chips.com>, "Rob Herring" <robh@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Heiko Stuebner" <heiko@sntech.de>,
"Liam Girdwood" <lgirdwood@gmail.com>,
"Kever Yang" <kever.yang@rock-chips.com>,
"Shawn Lin" <shawn.lin@rock-chips.com>,
linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-rockchip@lists.infradead.org,
kernel-janitors@vger.kernel.org
Subject: Re: [PATCH] PCI: rockchip-dwc: Potential error pointer dereference in probe
Date: Fri, 13 Aug 2021 15:32:50 +0100 [thread overview]
Message-ID: <20210813143250.GA5209@sirena.org.uk> (raw)
In-Reply-To: <2917a1c8-d59b-43b1-1650-228d20dfc070@arm.com>
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On Fri, Aug 13, 2021 at 03:01:10PM +0100, Robin Murphy wrote:
> Indeed I've thought before that it would be nice if regulators worked like
> GPIOs, where the absence of an optional one does give you NULL, and most of
> the API is also NULL-safe. Probably a pretty big job though...
It also encourages *really* bad practice with error handling, and in
general there are few use cases for optional regulators where there's
not some other actions that need to be taken in the case where the
supply isn't there (elimintating some operating points or features,
reconfiguring power internally and so on). If we genuninely don't need
to do anything special one wonders why we're trying to turn the power on
in the first place.
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next prev parent reply other threads:[~2021-08-13 14:33 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-13 11:33 [PATCH] PCI: rockchip-dwc: Potential error pointer dereference in probe Dan Carpenter
2021-08-13 12:55 ` Robin Murphy
2021-08-13 13:34 ` Rob Herring
2021-08-13 13:47 ` Robin Murphy
2021-08-13 15:57 ` Rob Herring
2021-08-13 16:01 ` Mark Brown
2021-08-13 13:54 ` Dan Carpenter
2021-08-13 14:01 ` Robin Murphy
2021-08-13 14:12 ` Dan Carpenter
2021-08-13 14:26 ` [PATCH v2] " Dan Carpenter
2021-08-23 16:15 ` Lorenzo Pieralisi
2021-08-13 14:32 ` Mark Brown [this message]
2021-08-13 15:00 ` [PATCH] " Robin Murphy
2021-08-13 15:30 ` Mark Brown
2021-08-13 15:45 ` Dan Carpenter
2021-08-13 15:53 ` Mark Brown
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