linux-kernel - [PATCH] xen/pcifront: avoid pci_frontend_enable

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Date:	Mon, 02 Apr 2012 15:22:39 +0100
From:	"Jan Beulich" <JBeulich@...e.com>
To:	"Jeremy Fitzhardinge" <jeremy@...p.org>,
	"Konrad Rzeszutek Wilk" <konrad.wilk@...cle.com>
Cc:	"xen-devel" <xen-devel@...ts.xen.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH] xen/pcifront: avoid pci_frontend_enable_msix() falsely
 returning success

The original XenoLinux code has always had things this way, and for
compatibility reasons (in particular with a subsequent pciback
adjustment) upstream Linux should behave the same way (allowing for two
distinct error indications to be returned by the backend).

Signed-off-by: Jan Beulich <jbeulich@...e.com>

---
 drivers/pci/xen-pcifront.c |    1 +
 1 file changed, 1 insertion(+)

--- 3.4-rc1/drivers/pci/xen-pcifront.c
+++ 3.4-rc1-xen-pcifront-enable-msix-retval/drivers/pci/xen-pcifront.c
@@ -290,6 +290,7 @@ static int pci_frontend_enable_msix(stru
 		} else {
 			printk(KERN_DEBUG "enable msix get value %x\n",
 				op.value);
+			err = op.value;
 		}
 	} else {
 		dev_err(&dev->dev, "enable msix get err %x\n", err);



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