linux-kernel - [PATCH 4.2 042/124] MIPS: CDMM: Add builtin_mips_cdmm

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Date:	Mon,  7 Dec 2015 09:55:32 -0500
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, James Hogan <james.hogan@...tec.com>,
	Jiri Slaby <jslaby@...e.com>, linux-mips@...ux-mips.org,
	Ralf Baechle <ralf@...ux-mips.org>
Subject: [PATCH 4.2 042/124] MIPS: CDMM: Add builtin_mips_cdmm_driver() macro

4.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: James Hogan <james.hogan@...tec.com>

commit 1b4a5ddb127caf125e14551ebd334be1acf21805 upstream.

Add helper macro builtin_mips_cdmm_driver() for builtin CDMM drivers
that don't do anything special in init and have no exit. The
module_mips_cdmm_driver() helper isn't really appropriate for drivers
that can't be built as a module.

Signed-off-by: James Hogan <james.hogan@...tec.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Jiri Slaby <jslaby@...e.com>
Cc: linux-mips@...ux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/11264/
Signed-off-by: Ralf Baechle <ralf@...ux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/mips/include/asm/cdmm.h |   11 +++++++++++
 1 file changed, 11 insertions(+)

--- a/arch/mips/include/asm/cdmm.h
+++ b/arch/mips/include/asm/cdmm.h
@@ -84,6 +84,17 @@ void mips_cdmm_driver_unregister(struct
 	module_driver(__mips_cdmm_driver, mips_cdmm_driver_register, \
 			mips_cdmm_driver_unregister)
 
+/*
+ * builtin_mips_cdmm_driver() - Helper macro for drivers that don't do anything
+ * special in init and have no exit. This eliminates some boilerplate. Each
+ * driver may only use this macro once, and calling it replaces device_initcall
+ * (or in some cases, the legacy __initcall). This is meant to be a direct
+ * parallel of module_mips_cdmm_driver() above but without the __exit stuff that
+ * is not used for builtin cases.
+ */
+#define builtin_mips_cdmm_driver(__mips_cdmm_driver) \
+	builtin_driver(__mips_cdmm_driver, mips_cdmm_driver_register)
+
 /* drivers/tty/mips_ejtag_fdc.c */
 
 #ifdef CONFIG_MIPS_EJTAG_FDC_EARLYCON


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