linux-kernel - [PATCH] auxdisplay: img-ascii-lcd: don't build without HAS

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Date:   Sun, 1 Jan 2017 18:42:38 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     kbuild test robot <fengguang.wu@...el.com>,
        Paul Burton <paul.burton@...tec.com>,
        Jeff Dike <jdike@...toit.com>,
        Richard Weinberger <richard@....at>,
        user-mode-linux-devel@...ts.sourceforge.net,
        Lee Jones <lee.jones@...aro.org>,
        Arnd Bergmann <arnd@...db.de>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Ralf Baechle <ralf@...ux-mips.org>
Subject: [PATCH] auxdisplay: img-ascii-lcd: don't build without HAS_IOMEM

From: Randy Dunlap <rdunlap@...radead.org>

Fix build error when the driver is built for arch/um, which does not
support HAS_IOMEM. Furthermore, the in-tree SYSCON drivers also require
HAS_IOMEM.

drivers/built-in.o: In function `img_ascii_lcd_probe':
drivers/auxdisplay/img-ascii-lcd.c:384: undefined reference to `devm_ioremap_resource'

Paul: there is no SYSCON kconfig symbol in the kernel tree. Should that
be MFD_SYSCON or GPIO_SYSCON?
Also, there is no MIPS_SEAD3 kconfig symbol either. Please fix that.

Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Reported-by: kbuild test robot <fengguang.wu@...el.com>
Cc:	Paul Burton <paul.burton@...tec.com>
Cc:	Jeff Dike <jdike@...toit.com>
Cc:	Richard Weinberger <richard@....at>
Cc:	user-mode-linux-devel@...ts.sourceforge.net
Cc:	Lee Jones <lee.jones@...aro.org>
Cc:	Arnd Bergmann <arnd@...db.de>
Cc:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	Ralf Baechle <ralf@...ux-mips.org>
---
 drivers/auxdisplay/Kconfig |    1 +
 1 file changed, 1 insertion(+)

--- lnx-410-rc2.orig/drivers/auxdisplay/Kconfig
+++ lnx-410-rc2/drivers/auxdisplay/Kconfig
@@ -121,6 +121,7 @@ config CFAG12864B_RATE
 
 config IMG_ASCII_LCD
 	tristate "Imagination Technologies ASCII LCD Display"
+	depends on HAS_IOMEM
 	default y if MIPS_MALTA || MIPS_SEAD3
 	select SYSCON
 	help