linux-kernel - [PATCH] Remove MODULE_ALIAS() calls that take undefined macro

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Date:   Tue,  7 May 2019 02:28:17 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     linux-kbuild@...r.kernel.org
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Alexey Gladkov <gladkov.alexey@...il.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
        Tony Lindgren <tony@...mide.com>,
        Lee Jones <lee.jones@...aro.org>,
        Aaro Koskinen <aaro.koskinen@....fi>,
        linux-omap@...r.kernel.org, Russell King <linux@...linux.org.uk>,
        linux-arm-kernel@...ts.infradead.org,
        Daniel Lezcano <daniel.lezcano@...aro.org>
Subject: [PATCH] Remove MODULE_ALIAS() calls that take undefined macro

These files do not define (USBHS_)DRIVER_NAME. Yet, they can be
successfully compiled because they are never built as a module by
anyone, i.e, the MODULE_ALIAS() calls are always no-op.

A problem showed up when a patch "moduleparam: Save information about
built-in modules in separate file" is applied. With this new feature,
MODULE_*() are populated even if the callers are built-in.

To avoid the build errors, the lines referencing to the undefined
macro must be removed.

The complete fix is to remove all MODULE_* and #include <linux/module.h>
like many "make ... explicitly non-modular" commits did.

For now, I am touching the offending lines.

Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
---

I will insert this commit before
"moduleparam: Save information about built-in modules in separate file"


 arch/arm/plat-omap/dma.c          | 1 -
 drivers/clocksource/timer-ti-dm.c | 1 -
 drivers/mfd/omap-usb-tll.c        | 1 -
 3 files changed, 3 deletions(-)

diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
index d4012d6..5ca4c5f 100644
--- a/arch/arm/plat-omap/dma.c
+++ b/arch/arm/plat-omap/dma.c
@@ -1449,7 +1449,6 @@ static void __exit omap_system_dma_exit(void)
 
 MODULE_DESCRIPTION("OMAP SYSTEM DMA DRIVER");
 MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:" DRIVER_NAME);
 MODULE_AUTHOR("Texas Instruments Inc");
 
 /*
diff --git a/drivers/clocksource/timer-ti-dm.c b/drivers/clocksource/timer-ti-dm.c
index 3352da6..2b7cee81 100644
--- a/drivers/clocksource/timer-ti-dm.c
+++ b/drivers/clocksource/timer-ti-dm.c
@@ -998,5 +998,4 @@ module_platform_driver(omap_dm_timer_driver);
 
 MODULE_DESCRIPTION("OMAP Dual-Mode Timer Driver");
 MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:" DRIVER_NAME);
 MODULE_AUTHOR("Texas Instruments Inc");
diff --git a/drivers/mfd/omap-usb-tll.c b/drivers/mfd/omap-usb-tll.c
index 446713d..93177d8 100644
--- a/drivers/mfd/omap-usb-tll.c
+++ b/drivers/mfd/omap-usb-tll.c
@@ -459,7 +459,6 @@ EXPORT_SYMBOL_GPL(omap_tll_disable);
 
 MODULE_AUTHOR("Keshava Munegowda <keshava_mgowda@...com>");
 MODULE_AUTHOR("Roger Quadros <rogerq@...com>");
-MODULE_ALIAS("platform:" USBHS_DRIVER_NAME);
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("usb tll driver for TI OMAP EHCI and OHCI controllers");
 
-- 
2.7.4