From: Konrad Rzeszutek Wilk <konrad@kernel.org>
Date: Tue, 6 Dec 2016 14:28:21 +0000 (-0500)
Subject: xen/pci: Bubble up error and fix description.
X-Git-Tag: v4.10-rc1~137^2~5
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=577f79e411b7a81a8ae7ae4daf5d4056ebbfbc58;p=karo-tx-linux.git

xen/pci: Bubble up error and fix description.

The function is never called under PV guests, and only shows up
when MSI (or MSI-X) cannot be allocated. Convert the message
to include the error value.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
---

diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c
index bedfab98077a..e1fb269c87af 100644
--- a/arch/x86/pci/xen.c
+++ b/arch/x86/pci/xen.c
@@ -264,8 +264,8 @@ static int xen_hvm_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
 	return 0;
 
 error:
-	dev_err(&dev->dev,
-		"Xen PCI frontend has not registered MSI/MSI-X support!\n");
+	dev_err(&dev->dev, "Failed to create MSI%s! ret=%d!\n",
+		type == PCI_CAP_ID_MSI ? "" : "-X", irq);
 	return irq;
 }