linux-kernel - [PATCH] miscdevice: introduce builtin_misc

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Message-ID: <20161022223605.11585-1-paul.gortmaker@windriver.com>
Date:   Sat, 22 Oct 2016 18:36:05 -0400
From:   Paul Gortmaker <paul.gortmaker@...driver.com>
To:     <linux-kernel@...r.kernel.org>
CC:     Paul Gortmaker <paul.gortmaker@...driver.com>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH] miscdevice: introduce builtin_misc_device

This is basically the same as module_misc_device but without the
presence of an exit/remove function.   Similar in nature to the
commit f309d4443130bf814e991f836e919dca22df37ae ("platform_device:
better support builtin boilerplate avoidance").

Cc: Arnd Bergmann <arnd@...db.de>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>
---

[I've got several users of this in my local queue; but I'll stagger
 those and this by a merge window to avoid dependency issues.]

 include/linux/miscdevice.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h
index 722698a43d79..a426cb55dc43 100644
--- a/include/linux/miscdevice.h
+++ b/include/linux/miscdevice.h
@@ -72,6 +72,13 @@ extern int misc_register(struct miscdevice *misc);
 extern void misc_deregister(struct miscdevice *misc);
 
 /*
+ * Helper macro for drivers that don't do anything special in the initcall.
+ * This helps in eleminating of boilerplate code.
+ */
+#define builtin_misc_device(__misc_device) \
+	builtin_driver(__misc_device, misc_register)
+
+/*
  * Helper macro for drivers that don't do anything special in module init / exit
  * call. This helps in eleminating of boilerplate code.
  */
-- 
2.8.4