linux-kernel - [PATCH] auxdisplay: ht16k33: select CONFIG_FB_SYS

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Message-Id: <20161123130702.432411-1-arnd@arndb.de>
Date:   Wed, 23 Nov 2016 14:06:49 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Robin van der Gracht <robin@...tonic.nl>,
        Rob Herring <robh@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Arnd Bergmann <arnd@...db.de>,
        Miguel Ojeda Sandonis <miguel.ojeda.sandonis@...il.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] auxdisplay: ht16k33: select CONFIG_FB_SYS_FOPS

The new driver caused a rare randconfig failure:

drivers/auxdisplay/ht16k33.o:(.data.ht16k33_fb_ops+0xc): undefined reference to `fb_sys_read'
drivers/auxdisplay/ht16k33.o:(.data.ht16k33_fb_ops+0x10): undefined reference to `fb_sys_write'

This selects the respective helper module, like all other
such drivers do.

Fixes: 8992da44c680 ("auxdisplay: ht16k33: Driver for LED controller")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/auxdisplay/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/auxdisplay/Kconfig b/drivers/auxdisplay/Kconfig
index a230ea797b92..b8bbfc64a1d1 100644
--- a/drivers/auxdisplay/Kconfig
+++ b/drivers/auxdisplay/Kconfig
@@ -131,6 +131,7 @@ config IMG_ASCII_LCD
 config HT16K33
 	tristate "Holtek Ht16K33 LED controller with keyscan"
 	depends on FB && OF && I2C && INPUT
+	select FB_SYS_FOPS
 	select INPUT_MATRIXKMAP
 	select FB_BACKLIGHT
 	help
-- 
2.9.0