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From: Zijun Hu <zijun_hu@icloud.com>
To: Rob Herring <robh@kernel.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	Saravana Kannan <saravanak@google.com>,
	Len Brown <lenb@kernel.org>, Daniel Scally <djrscally@gmail.com>,
	Heikki Krogerus <heikki.krogerus@linux.intel.com>,
	Sakari Ailus <sakari.ailus@linux.intel.com>,
	linux-acpi@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, Zijun Hu <quic_zijuhu@quicinc.com>
Subject: Re: [PATCH v3] of: property: Increase NR_FWNODE_REFERENCE_ARGS
Date: Tue, 11 Feb 2025 22:57:43 +0800	[thread overview]
Message-ID: <82cdb70d-475f-440e-8550-3c52b4e000fa@icloud.com> (raw)
In-Reply-To: <CAL_JsqJ6wg3Q9FxKOzrnRo_s1ZznLurfsDuWJ+XVQzA5YS6Rsw@mail.gmail.com>

On 2025/2/11 22:22, Rob Herring wrote:
>> i have confirmed that:
>>
>> of.h includes fwnode.h indirectly
>> fwnode.h does not include of.h directly or indirectly
> Only for struct fwnode_handle. I don't think we want to add to that.
> For the most part, fwnode is a layer above DT and the DT code should
> know nothing about fwnode.

DT, as a type of firmware node, needs to implement firmware node
interfaces 'struct fwnode_operations' defined in fwnode.h.

so it includes fwnode.h and knows everything of fwnode.h

A)
diff --git a/include/linux/of.h b/include/linux/of.h
#define MAX_PHANDLE_ARGS 16
 struct of_phandle_args {
        struct device_node *np;
        int args_count;
        uint32_t args[MAX_PHANDLE_ARGS];
 };
+static_assert(NR_FWNODE_REFERENCE_ARGS == MAX_PHANDLE_ARGS);

B)
diff --git a/include/linux/of.h b/include/linux/of.h
-#define MAX_PHANDLE_ARGS 16
+#define MAX_PHANDLE_ARGS NR_FWNODE_REFERENCE_ARGS

you like solution A), right ?

      reply	other threads:[~2025-02-11 14:57 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-02-10 15:00 [PATCH v3] of: property: Increase NR_FWNODE_REFERENCE_ARGS Zijun Hu
2025-02-10 15:34 ` Andy Shevchenko
2025-02-11 12:20   ` Zijun Hu
2025-02-11 12:24     ` Andy Shevchenko
2025-02-11 13:40       ` Zijun Hu
2025-02-11 14:22         ` Rob Herring
2025-02-11 14:57           ` Zijun Hu [this message]

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