linux-kernel - [PATCH 4/6] block/cciss: Disable ASPM

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Date:	Fri, 11 Nov 2011 11:05:09 -0500
From:	Matthew Garrett <mjg@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	Matthew Garrett <mjg@...hat.com>, mike.miller@...com,
	iss_storagedev@...com, axboe@...nel.dk
Subject: [PATCH 4/6] block/cciss: Disable ASPM

The Windows driver .inf disables ASPM on all cciss devices. Do the same.

Signed-off-by: Matthew Garrett <mjg@...hat.com>
Cc: mike.miller@...com
Cc: iss_storagedev@...com
Cc: axboe@...nel.dk
---
 drivers/block/cciss.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 486f94e..7e43ad3 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -4319,6 +4319,10 @@ static int __devinit cciss_pci_init(ctlr_info_t *h)
 		dev_warn(&h->pdev->dev, "controller appears to be disabled\n");
 		return -ENODEV;
 	}
+
+	pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S |
+			       PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM);
+
 	err = pci_enable_device(h->pdev);
 	if (err) {
 		dev_warn(&h->pdev->dev, "Unable to Enable PCI device\n");
-- 
1.7.7.1

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