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Message-ID: <20230807231320.svssge6uymw3jiho@intel.intel>
Date: Tue, 8 Aug 2023 01:13:20 +0200
From: Andi Shyti <andi.shyti@...nel.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: Sylwester Nawrocki <s.nawrocki@...sung.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Alim Akhtar <alim.akhtar@...sung.com>,
linux-media@...r.kernel.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/3] media: exynos4-is: fimc-is: replace duplicate pmu
node with phandle
Hi Krzysztof,
[...]
> +static void __iomem *fimc_is_get_pmu_regs(struct device *dev)
> +{
> + struct device_node *node;
> + void __iomem *regs;
> +
> + node = of_parse_phandle(dev->of_node, "samsung,pmu-syscon", 0);
> + if (!node) {
> + dev_warn(dev, "Finding PMU node via deprecated method, update your DTB\n");
> + node = of_get_child_by_name(dev->of_node, "pmu");
> + if (!node)
> + return IOMEM_ERR_PTR(-ENODEV);
in my opinion this should be:
...
if (!node)
return IOMEM_ERR_PTR(-ENODEV);
dev_warn(dev, "Finding PMU node via deprecated method, update your DTB\n");
Because if you don't have both "samsung,pmu-syscon and "pmu" then
the warning should not be printed and you need to return -ENODEV.
... and... "*please* update your DTB", the user might get upset
and out of sheer spite, decides not to do it – just because! :)
Andi
> + }
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