linux-kernel - [PATCH 1/3] mod_devicetable: helper macro for declaring oftree module device table

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Date:   Fri, 31 May 2019 13:54:48 +0200
From:   "Enrico Weigelt, metux IT consult" <info@...ux.net>
To:     linux-kernel@...r.kernel.org
Cc:     axboe@...nel.dk, herbert@...dor.apana.org.au, davem@...emloft.net,
        linux-block@...r.kernel.org, linux-crypto@...r.kernel.org
Subject: [PATCH 1/3] mod_devicetable: helper macro for declaring oftree module device table

Little helper macro that declares an oftree module device table,
if CONFIG_OF is enabled. Otherwise it's just noop. Helpful for
reducing the number of #ifdef's.

Instead of:
    MODULE_DEVICE_TABLE(of, foo)
now use:
    MODULE_OF_TABLE(foo)

Signed-off-by: Enrico Weigelt <info@...ux.net>
---
 include/linux/mod_devicetable.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index 448621c..0551b53 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -245,6 +245,15 @@ struct of_device_id {
 	const void *data;
 };
 
+/*
+ * macro for adding the of module device table only if CONFIG_OF enabled
+ */
+#ifdef CONFIG_OF
+#define MODULE_OF_TABLE(name)	MODULE_DEVICE_TABLE(of,name)
+#else
+#define MODULE_OF_TABLE(name)
+#endif /* CONFIG_OF */
+
 /* VIO */
 struct vio_device_id {
 	char type[32];
-- 
1.9.1