summaryrefslogtreecommitdiffstats
path: root/drivers/pci/quirks.c
diff options
context:
space:
mode:
authorMika Westerberg <mika.westerberg@linux.intel.com>2018-09-05 14:09:54 +0300
committerBjorn Helgaas <bhelgaas@google.com>2018-09-11 08:47:38 -0500
commit50ca031b51106b1b46162d4e9ecccb7edc95682f (patch)
treeb849a69a1a786a6fbc260de1159cd80b17a5aff5 /drivers/pci/quirks.c
parentf30cf498b4277dcb20514f3f1daa89c2281f3395 (diff)
downloadlinux-50ca031b51106b1b46162d4e9ecccb7edc95682f.tar.bz2
Revert "PCI: Add ACS quirk for Intel 300 series"
This reverts f154a718e6cc ("PCI: Add ACS quirk for Intel 300 series"). It turns out that erratum "PCH PCIe* Controller Root Port (ACSCTLR) Appear As Read Only" has been fixed in 300 series chipsets, even though the datasheet [1] claims otherwise. To make ACS work properly on 300 series root ports, revert the faulty commit. [1] https://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/300-series-c240-series-chipset-pch-spec-update.pdf Fixes: f154a718e6cc ("PCI: Add ACS quirk for Intel 300 series") Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: stable@vger.kernel.org # v4.18+
Diffstat (limited to 'drivers/pci/quirks.c')
-rw-r--r--drivers/pci/quirks.c6
1 files changed, 0 insertions, 6 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index ef7143a274e0..6bc27b7fd452 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -4355,11 +4355,6 @@ static int pci_quirk_qcom_rp_acs(struct pci_dev *dev, u16 acs_flags)
*
* 0x9d10-0x9d1b PCI Express Root port #{1-12}
*
- * The 300 series chipset suffers from the same bug so include those root
- * ports here as well.
- *
- * 0xa32c-0xa343 PCI Express Root port #{0-24}
- *
* [1] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-2.html
* [2] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-1.html
* [3] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-spec-update.html
@@ -4377,7 +4372,6 @@ static bool pci_quirk_intel_spt_pch_acs_match(struct pci_dev *dev)
case 0xa110 ... 0xa11f: case 0xa167 ... 0xa16a: /* Sunrise Point */
case 0xa290 ... 0xa29f: case 0xa2e7 ... 0xa2ee: /* Union Point */
case 0x9d10 ... 0x9d1b: /* 7th & 8th Gen Mobile */
- case 0xa32c ... 0xa343: /* 300 series */
return true;
}