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authorKai-Heng Feng <kai.heng.feng@canonical.com>2017-11-09 09:12:03 +0300
committerChristoph Hellwig <hch@lst.de>2017-11-20 10:36:40 +0300
commit8427bbc224863e14d905c87920d4005cb3e88ac3 (patch)
tree8f84ace61221698d778d4a4450ec60a1a63bd132 /drivers/nvme
parent9d7fab04b95e8c26014a9bfc1c943b8360b44c17 (diff)
downloadlinux-8427bbc224863e14d905c87920d4005cb3e88ac3.tar.xz
nvme-pci: disable APST on Samsung SSD 960 EVO + ASUS PRIME B350M-A
The NVMe device in question drops off the PCIe bus after system suspend. I've tried several approaches to workaround this issue, but none of them works: - NVME_QUIRK_DELAY_BEFORE_CHK_RDY - NVME_QUIRK_NO_DEEPEST_PS - Disable APST before controller shutdown - Delay between controller shutdown and system suspend - Explicitly set power state to 0 before controller shutdown Fortunately it's a desktop, so disable APST won't hurt the battery. Also, change the quirk function name to reflect it's for vendor combination quirks. BugLink: https://bugs.launchpad.net/bugs/1705748 Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/nvme')
-rw-r--r--drivers/nvme/host/pci.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index a11cfd470089..8a15aa50b8e0 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2428,7 +2428,7 @@ static int nvme_dev_map(struct nvme_dev *dev)
return -ENODEV;
}
-static unsigned long check_dell_samsung_bug(struct pci_dev *pdev)
+static unsigned long check_vendor_combination_bug(struct pci_dev *pdev)
{
if (pdev->vendor == 0x144d && pdev->device == 0xa802) {
/*
@@ -2443,6 +2443,14 @@ static unsigned long check_dell_samsung_bug(struct pci_dev *pdev)
(dmi_match(DMI_PRODUCT_NAME, "XPS 15 9550") ||
dmi_match(DMI_PRODUCT_NAME, "Precision 5510")))
return NVME_QUIRK_NO_DEEPEST_PS;
+ } else if (pdev->vendor == 0x144d && pdev->device == 0xa804) {
+ /*
+ * Samsung SSD 960 EVO drops off the PCIe bus after system
+ * suspend on a Ryzen board, ASUS PRIME B350M-A.
+ */
+ if (dmi_match(DMI_BOARD_VENDOR, "ASUSTeK COMPUTER INC.") &&
+ dmi_match(DMI_BOARD_NAME, "PRIME B350M-A"))
+ return NVME_QUIRK_NO_APST;
}
return 0;
@@ -2482,7 +2490,7 @@ static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id)
if (result)
goto unmap;
- quirks |= check_dell_samsung_bug(pdev);
+ quirks |= check_vendor_combination_bug(pdev);
result = nvme_init_ctrl(&dev->ctrl, &pdev->dev, &nvme_pci_ctrl_ops,
quirks);