linux-kernel - [PATCH] vmxnet3: fix building without CONFIG_PCI

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Date:	Thu, 13 Mar 2014 10:44:34 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Neil Horman <nhorman@...driver.com>
Cc:	Shreyas Bhatewara <sbhatewara@...are.com>,
	"VMware, Inc." <pv-drivers@...are.com>,
	"David S. Miller" <davem@...emloft.net>, stable@...r.kernel.org,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH] vmxnet3: fix building without CONFIG_PCI_MSI

Since commit d25f06ea466e "vmxnet3: fix netpoll race condition",
the vmxnet3 driver fails to build when CONFIG_PCI_MSI is disabled,
because it unconditionally references the vmxnet3_msix_rx()
function.

To fix this, use the same #ifdef in the caller that exists around
the function definition.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
Cc: Neil Horman <nhorman@...driver.com>
Cc: Shreyas Bhatewara <sbhatewara@...are.com>
Cc: "VMware, Inc." <pv-drivers@...are.com>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: stable@...r.kernel.org
---
Found this during randconfig testing on ARM. Most of the time when
I report network driver problems, they get fixed in the netdev tree
before I even find them, but since this is for a patch marked "stable",
I made a proper patch anyway.

Please ignore if this is already a known problem, otherwise make sure
the original patch doesn't get backported without addressing this
issue first.

diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
index cbd898f..28965ad 100644
--- a/drivers/net/vmxnet3/vmxnet3_drv.c
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -1761,13 +1761,16 @@ static void
 vmxnet3_netpoll(struct net_device *netdev)
 {
 	struct vmxnet3_adapter *adapter = netdev_priv(netdev);
-	int i;
 
 	switch (adapter->intr.type) {
-	case VMXNET3_IT_MSIX:
+#ifdef CONFIG_PCI_MSI
+	case VMXNET3_IT_MSIX: {
+		int i;
 		for (i = 0; i < adapter->num_rx_queues; i++)
 			vmxnet3_msix_rx(0, &adapter->rx_queue[i]);
 		break;
+	}
+#endif
 	case VMXNET3_IT_MSI:
 	default:
 		vmxnet3_intr(0, adapter->netdev);

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