linux-kernel - [PATCH 3/3] pch_can: fix module reload issue with MSI

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Message-Id: <1297157343-3213-3-git-send-email-tomoya-linux@dsn.okisemi.com>
Date:	Tue,  8 Feb 2011 18:29:03 +0900
From:	Tomoya MORINAGA <tomoya-linux@....okisemi.com>
To:	wg@...ndegger.com, socketcan-core@...ts.berlios.de,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	qi.wang@...el.com, yong.y.wang@...el.com,
	andrew.chih.howe.khor@...el.com, joel.clark@...el.com,
	kok.howg.ewe@...el.com, toshiharu-linux@....okisemi.com,
	Tomoya MORINAGA <tomoya-linux@....okisemi.com>
Subject: [PATCH 3/3] pch_can: fix module reload issue with MSI

Currently, in case reload pch_can,
pch_can not to be able to catch interrupt.

The cause is bus-master is not set in pch_can.
Thus, add enabling bus-master processing.

Signed-off-by: Tomoya MORINAGA <tomoya-linux@....okisemi.com>
---
 drivers/net/can/pch_can.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/net/can/pch_can.c b/drivers/net/can/pch_can.c
index 342d514..7d8bc12 100644
--- a/drivers/net/can/pch_can.c
+++ b/drivers/net/can/pch_can.c
@@ -1238,6 +1238,7 @@ static int __devinit pch_can_probe(struct pci_dev *pdev,
 		priv->use_msi = 0;
 	} else {
 		netdev_err(ndev, "PCH CAN opened with MSI\n");
+		pci_set_master(pdev);
 		priv->use_msi = 1;
 	}
 
-- 
1.7.3.4

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