linux-kernel - linux-next: build failure after merge of the final tree (staging tree related)

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Message-Id: <20130313163935.ea2f414d3ccc6ed1434d92b8@canb.auug.org.au>
Date:	Wed, 13 Mar 2013 16:39:35 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Greg KH <greg@...ah.com>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Paul Zimmerman <Paul.Zimmerman@...opsys.com>
Subject: linux-next: build failure after merge of the final tree (staging
 tree related)

Hi all,

After merging the final tree, today's linux-next build (powerpc
allyesconfig) failed like this:

drivers/staging/dwc2/hcd.c: In function '_dwc2_hcd_urb_enqueue':
drivers/staging/dwc2/hcd.c:2387:3: error: implicit declaration of function 'bus_to_virt' [-Werror=implicit-function-declaration]
drivers/staging/dwc2/hcd.c:2387:7: warning: assignment makes pointer from integer without a cast [enabled by default]

Caused by commit 7359d482eb4d ("staging: HCD files for the DWC2 driver").

From Documentation/bus-virt-phys-mapping.txt:

"[ NOTE: The virt_to_bus() and bus_to_virt() functions have been
        superseded by the functionality provided by the PCI DMA interface
        (see Documentation/DMA-API-HOWTO.txt).  They continue
        to be documented below for historical purposes, but new code
        must not use them. --davidm 00/12/12 ]"

See also Documentation/DMA-API-HOWTO.txt.

I have added this patch for today:

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Wed, 13 Mar 2013 16:35:50 +1100
Subject: [PATCH] staging: the DWC2 driver uses bus_to_virt

Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 drivers/staging/dwc2/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/staging/dwc2/Kconfig b/drivers/staging/dwc2/Kconfig
index 610418a..bc4cdfe 100644
--- a/drivers/staging/dwc2/Kconfig
+++ b/drivers/staging/dwc2/Kconfig
@@ -1,6 +1,7 @@
 config USB_DWC2
 	tristate "DesignWare USB2 DRD Core Support"
 	depends on USB
+	depends on VIRT_TO_BUS
 	select USB_OTG_UTILS
 	help
 	  Say Y or M here if your system has a Dual Role HighSpeed
-- 
1.8.1


-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
http://www.canb.auug.org.au/~sfr/

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