linux-kernel - [PATCH] mtd: nand: oxnas_nand: fix build errors on arch/um, require HAS

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Date:   Sun, 1 Jan 2017 18:58:27 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     LKML <linux-kernel@...r.kernel.org>, linux-mtd@...ts.infradead.org
Cc:     kbuild test robot <fengguang.wu@...el.com>,
        Boris Brezillon <boris.brezillon@...e-electrons.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Jeff Dike <jdike@...toit.com>,
        Richard Weinberger <richard@....at>,
        user-mode-linux-devel@...ts.sourceforge.net
Subject: [PATCH] mtd: nand: oxnas_nand: fix build errors on arch/um, require
 HAS_IOMEM

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

Fix build errors on arch/um, which does not support HAS_IOMEM,
while the oxnas_nand.c driver uses interfaces that are
supplied by HAS_IOMEM.

(loadable module build:)
ERROR: "devm_ioremap_resource" [drivers/mtd/nand/oxnas_nand.ko] undefined!
or (built-in build:)
drivers/built-in.o: In function `oxnas_nand_probe':
drivers/mtd/nand/oxnas_nand.c:102: undefined reference to `devm_ioremap_resource'

Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Reported-by: kbuild test robot <fengguang.wu@...el.com>
Cc: Boris Brezillon <boris.brezillon@...e-electrons.com>
Cc: Neil Armstrong <narmstrong@...libre.com>
Cc:	Jeff Dike <jdike@...toit.com>
Cc:	Richard Weinberger <richard@....at>
Cc:	user-mode-linux-devel@...ts.sourceforge.net
Cc:	linux-mtd@...ts.infradead.org
---
 drivers/mtd/nand/Kconfig |    1 +
 1 file changed, 1 insertion(+)

--- lnx-410-rc2.orig/drivers/mtd/nand/Kconfig
+++ lnx-410-rc2/drivers/mtd/nand/Kconfig
@@ -426,6 +426,7 @@ config MTD_NAND_ORION
 
 config MTD_NAND_OXNAS
 	tristate "NAND Flash support for Oxford Semiconductor SoC"
+	depends on HAS_IOMEM
 	help
 	  This enables the NAND flash controller on Oxford Semiconductor SoCs.