linux-kernel - Re: [PATCH 3/5] Drivers: scsi: storvsc: Implement multi-channel support

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Date:	Thu, 27 Jun 2013 03:22:25 +0000
From:	James Bottomley <jbottomley@...allels.com>
To:	"K. Y. Srinivasan" <kys@...rosoft.com>
CC:	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
	"ohering@...e.com" <ohering@...e.com>,
	"hch@...radead.org" <hch@...radead.org>,
	"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>
Subject: Re: [PATCH 3/5] Drivers: scsi: storvsc: Implement multi-channel
 support

On Tue, 2013-06-04 at 12:05 -0700, K. Y. Srinivasan wrote:
> Implement multi-channel support for the storage devices.

This doesn't compile:

  CC [M]  drivers/scsi/storvsc_drv.o
drivers/scsi/storvsc_drv.c: In function ‘handle_sc_creation’:
drivers/scsi/storvsc_drv.c:763:35: error: ‘struct vmbus_channel’ has no
member named ‘primary_channel’
drivers/scsi/storvsc_drv.c: In function ‘handle_multichannel_storage’:
drivers/scsi/storvsc_drv.c:805:2: error: implicit declaration of
function
‘vmbus_set_sc_create_callback’ [-Werror=implicit-function-declaration]
drivers/scsi/storvsc_drv.c:812:2: error: implicit declaration of
function
‘vmbus_are_subchannels_present’ [-Werror=implicit-function-declaration]
drivers/scsi/storvsc_drv.c: In function ‘storvsc_on_channel_callback’:
drivers/scsi/storvsc_drv.c:1223:13: error: ‘struct vmbus_channel’ has no
member named ‘primary_channel’
drivers/scsi/storvsc_drv.c:1224:19: error: ‘struct vmbus_channel’ has no
member named ‘primary_channel’
drivers/scsi/storvsc_drv.c: In function ‘storvsc_do_io’:
drivers/scsi/storvsc_drv.c:1341:2: error: implicit declaration of
function
‘vmbus_get_outgoing_channel’ [-Werror=implicit-function-declaration]
drivers/scsi/storvsc_drv.c:1341:19: warning: assignment makes pointer
from integer without a cast [enabled by default]
cc1: some warnings being treated as errors
make[2]: *** [drivers/scsi/storvsc_drv.o] Error 1

I assume this is a cross tree dependency?  What's the relevant branch I
need?

James