[PATCH 4/6] block/cciss: Disable ASPM

From: Matthew Garrett
Date: Fri Nov 11 2011 - 11:06:42 EST


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

Signed-off-by: Matthew Garrett <mjg@xxxxxxxxxx>
Cc: mike.miller@xxxxxx
Cc: iss_storagedev@xxxxxx
Cc: axboe@xxxxxxxxx
---
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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