netdev - [PATCH 1/4] net: cs89x0: always build platform code if !HAS_IOPORT

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Message-Id: <1422454504-439085-2-git-send-email-arnd@arndb.de>
Date:	Wed, 28 Jan 2015 15:15:01 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, linux-arm-kernel@...ts.infradead.org,
	linux-pcmcia@...ts.infradead.org, kas@...muni.cz,
	jeffrey.t.kirsher@...el.com, Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 1/4] net: cs89x0: always build platform code if !HAS_IOPORT_MAP

The cs89x0 driver can either be built as an ISA driver or a platform
driver, the choice is controlled by the CS89x0_PLATFORM Kconfig
symbol. Building the ISA driver on a system that does not have
a way to map I/O ports fails with this error:

drivers/built-in.o: In function `cs89x0_ioport_probe.constprop.1':
:(.init.text+0x4794): undefined reference to `ioport_map'
:(.init.text+0x4830): undefined reference to `ioport_unmap'

This changes the Kconfig logic to take that option away and
always force building the platform variant of this driver if
CONFIG_HAS_IOPORT_MAP is not set. This is the only correct
choice in this case, and it avoids the build error.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/net/ethernet/cirrus/Kconfig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/cirrus/Kconfig b/drivers/net/ethernet/cirrus/Kconfig
index 7403dff8f14a..905ac5f5d9a6 100644
--- a/drivers/net/ethernet/cirrus/Kconfig
+++ b/drivers/net/ethernet/cirrus/Kconfig
@@ -32,7 +32,8 @@ config CS89x0
 	  will be called cs89x0.
 
 config CS89x0_PLATFORM
-	bool "CS89x0 platform driver support"
+	bool "CS89x0 platform driver support" if HAS_IOPORT_MAP
+	default !HAS_IOPORT_MAP
 	depends on CS89x0
 	help
 	  Say Y to compile the cs89x0 driver as a platform driver. This
-- 
2.1.0.rc2

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