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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>
This commit is contained in:
Kai-Heng Feng 2017-11-09 01:12:03 -05:00 committed by Christoph Hellwig
parent 9d7fab04b9
commit 8427bbc224
1 changed files with 10 additions and 2 deletions
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12
drivers/nvme/host/pci.c
View File

@ -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);