Re: [PATCH] c_can: Add support for eg20t (pch_can)

[Wolfgang Grandegger <wg@grandegger.com>]

On 04/03/2014 04:14 PM, Alexander Stein wrote:
> Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>

Acked-by: Wolfgang Grandegger <wg@grandegger.com>

In my patch stack I have also th patch below. Could you please give it
I try before I re-submit it. Thanks.

Wolfgang.

From 8cc3c5fde12d0dc36b658483433d5b12be693492 Mon Sep 17 00:00:00 2001
From: Wolfgang Grandegger <wg@grandegger.com>
Date: Sat, 4 May 2013 22:28:43 +0200
Subject: [PATCH 07/12] c_can_pci: enable PCI bus master only for MSI

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
---
 c_can_pci.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/c_can_pci.c b/c_can_pci.c
index 3a2ac45..98562c2 100644
--- a/c_can_pci.c
+++ b/c_can_pci.c
@@ -86,8 +86,11 @@ static int c_can_pci_probe(struct pci_dev *pdev,
 		goto out_disable_device;
 	}
 
-	pci_set_master(pdev);
-	pci_enable_msi(pdev);
+	ret = pci_enable_msi(pdev);
+	if (!ret) {
+		dev_info(&pdev->dev, "MSI enabled\n");
+		pci_set_master(pdev);
+	}
 
 	addr = pci_iomap(pdev, c_can_pci_data->bar, 0);
 	if (!addr) {
-- 
1.7.9.5