linux-next: build failure after merge of the kbuild tree

From: Stephen Rothwell <sfr@canb.auug.org.au>
To: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Linux Next Mailing List <linux-next@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Alexey Gladkov <gladkov.alexey@gmail.com>,
	Keshava Munegowda <keshava_mgowda@ti.com>,
	Samuel Ortiz <sameo@linux.intel.com>
Subject: linux-next: build failure after merge of the kbuild tree
Date: Mon, 6 May 2019 09:46:09 +1000	[thread overview]
Message-ID: <20190506094609.08e930f2@canb.auug.org.au> (raw)

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Hi Masahiro,

After merging the kbuild tree, today's linux-next build (arm
multi_v7_defconfig) failed like this:

In file included from include/linux/module.h:18,
                 from drivers/mfd/omap-usb-tll.c:21:
drivers/mfd/omap-usb-tll.c:462:26: error: expected ',' or ';' before 'USBHS_DRIVER_NAME'
 MODULE_ALIAS("platform:" USBHS_DRIVER_NAME);
                          ^~~~~~~~~~~~~~~~~
include/linux/moduleparam.h:26:47: note: in definition of macro '__MODULE_INFO'
   = __MODULE_INFO_PREFIX __stringify(tag) "=" info
                                               ^~~~
include/linux/module.h:164:30: note: in expansion of macro 'MODULE_INFO'
 #define MODULE_ALIAS(_alias) MODULE_INFO(alias, _alias)
                              ^~~~~~~~~~~
drivers/mfd/omap-usb-tll.c:462:1: note: in expansion of macro 'MODULE_ALIAS'
 MODULE_ALIAS("platform:" USBHS_DRIVER_NAME);
 ^~~~~~~~~~~~

Caused by commit

  6a26793a7891 ("moduleparam: Save information about built-in modules in separate file")

USBHS_DRIVER_NAME is not defined and this kbuild tree change has
exposed it. It has been this way since commit

  16fa3dc75c22 ("mfd: omap-usb-tll: HOST TLL platform driver")

From v3.7-rc1 in 2012.

I have applied the following patch for today.

From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Mon, 6 May 2019 09:39:14 +1000
Subject: [PATCH] mfd: omap: remove unused MODULE_ALIAS from omap-usb-tll.c

USBHS_DRIVER_NAME has never been defined, so this cannot have ever
been used.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---
 drivers/mfd/omap-usb-tll.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mfd/omap-usb-tll.c b/drivers/mfd/omap-usb-tll.c
index 446713dbee27..1cc8937e8bec 100644
--- a/drivers/mfd/omap-usb-tll.c
+++ b/drivers/mfd/omap-usb-tll.c
@@ -459,7 +459,7 @@ EXPORT_SYMBOL_GPL(omap_tll_disable);
 
 MODULE_AUTHOR("Keshava Munegowda <keshava_mgowda@ti.com>");
 MODULE_AUTHOR("Roger Quadros <rogerq@ti.com>");
-MODULE_ALIAS("platform:" USBHS_DRIVER_NAME);
+// MODULE_ALIAS("platform:" USBHS_DRIVER_NAME);
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("usb tll driver for TI OMAP EHCI and OHCI controllers");
 
-- 
2.20.1

-- 
Cheers,
Stephen Rothwell

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