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Message-ID: <20071015174321.GA27428@elte.hu>
Date:	Mon, 15 Oct 2007 19:43:21 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Michael Buesch <mb@...sch.de>
Cc:	Al Viro <viro@....linux.org.uk>, gregkh@...e.de,
	David Brownell <dbrownell@...rs.sourceforge.net>,
	"John W. Linville" <linville@...driver.com>,
	linux-kernel@...r.kernel.org
Subject: [patch] usb: fix ssb_ohci_probe() build bug


* Ingo Molnar <mingo@...e.hu> wrote:

> find attached another config that reproduces the build failure above.
> 
> i think the reason is this:
> 
> CONFIG_SSB=m
> CONFIG_USB_OHCI_HCD=y
> CONFIG_USB_OHCI_HCD_SSB=y

the patch below fixes this for me.

	Ingo

----------------------->
Subject: usb: fix ssb_ohci_probe() build bug
From: Ingo Molnar <mingo@...e.hu>

fix ssb_ohci_probe() build bug:

 drivers/built-in.o: In function `ssb_ohci_probe':
 ohci-hcd.c:(.text+0xbff39): undefined reference to `ssb_device_enable'
 ohci-hcd.c:(.text+0xbff6f): undefined reference to `ssb_admatch_base'
 ohci-hcd.c:(.text+0xbff8b): undefined reference to `ssb_admatch_size'
 ohci-hcd.c:(.text+0xbffe5): undefined reference to `ssb_device_disable'
 [...]

the reason was that this Kconfig combination was allowed:

 CONFIG_SSB=m
 CONFIG_USB_OHCI_HCD=y
 CONFIG_USB_OHCI_HCD_SSB=y

the fix is to require a modular USB_OHCI_HCD build when SSB is modular.

Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 drivers/usb/host/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux/drivers/usb/host/Kconfig
===================================================================
--- linux.orig/drivers/usb/host/Kconfig
+++ linux/drivers/usb/host/Kconfig
@@ -156,7 +156,7 @@ config USB_OHCI_HCD_PCI
 
 config USB_OHCI_HCD_SSB
 	bool "OHCI support for Broadcom SSB OHCI core"
-	depends on USB_OHCI_HCD && SSB && EXPERIMENTAL
+	depends on USB_OHCI_HCD && (SSB = y || SSB = CONFIG_USB_OHCI_HCD) && EXPERIMENTAL
 	default n
 	---help---
 	  Support for the Sonics Silicon Backplane (SSB) attached
-
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