linux-kernel - [PATCH v2 3/3] Drivers: hv: vmbus: setup irq after synic is initialized

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Date:	Tue, 21 Apr 2015 18:21:38 +0200
From:	Vitaly Kuznetsov <vkuznets@...hat.com>
To:	"K. Y. Srinivasan" <kys@...rosoft.com>
Cc:	Haiyang Zhang <haiyangz@...rosoft.com>,
	devel@...uxdriverproject.org, linux-kernel@...r.kernel.org,
	Dexuan Cui <decui@...rosoft.com>,
	Dan Carpenter <dan.carpenter@...cle.com>
Subject: [PATCH v2 3/3] Drivers: hv: vmbus: setup irq after synic is initialized

vmbus_isr() uses synic pages which are being setup in hv_synic_alloc(), we
need to register this irq handler only after we allocate all the required
pages.

Signed-off-by: Vitaly Kuznetsov <vkuznets@...hat.com>
---
 drivers/hv/vmbus_drv.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index cf20400..e922804 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -822,11 +822,12 @@ static int vmbus_bus_init(int irq)
 	if (ret)
 		goto err_cleanup;
 
-	hv_setup_vmbus_irq(vmbus_isr);
-
 	ret = hv_synic_alloc();
 	if (ret)
 		goto err_alloc;
+
+	hv_setup_vmbus_irq(vmbus_isr);
+
 	/*
 	 * Initialize the per-cpu interrupt state and
 	 * connect to the host.
-- 
1.9.3

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