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UBUNTU: SAUCE: (no-up) PCI: fix system hang issue of Marvell SATA host controller

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BugLink: http://bugs.launchpad.net/bugs/1159863

Hassle someone if this patch hasn't been removed by 13.10.
See https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1159863/comments/2

Fix system hang issue: if first accessed resource file of BAR0 ~
BAR4, system will hang after executing lspci command

Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
This commit is contained in:
Xiangliang Yu
2013-03-07 14:29:16 +00:00
committed by Paolo Pisati
parent 1e89099765
commit 7b94f65e8c
1 changed files with 15 additions and 0 deletions
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drivers/pci/quirks.c
+15
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@@ -300,6 +300,21 @@ static void quirk_mmio_always_on(struct pci_dev *dev)
DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_ANY_ID, PCI_ANY_ID,
PCI_CLASS_BRIDGE_HOST, 8, quirk_mmio_always_on);
/* The BAR0 ~ BAR4 of Marvell 9125 device can't be accessed
* by IO resource file, and need to skip the files
*/
static void quirk_marvell_mask_bar(struct pci_dev *dev)
{
int i;
for (i = 0; i < 5; i++)
if (dev->resource[i].start)
dev->resource[i].start =
dev->resource[i].end = 0;
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9125,
quirk_marvell_mask_bar);
/*
* The Mellanox Tavor device gives false positive parity errors. Disable
* parity error reporting.