5.15-stable review patch. If anyone has any objections, please let me know.
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From: Georg Gottleuber ggo@tuxedocomputers.com
commit 107b4e063d78c300b21e2d5291b1aa94c514ea5b upstream.
Some Kingston NV1 and A2000 are wasting a lot of power on specific TUXEDO platforms in s2idle sleep if 'Simple Suspend' is used.
This patch applies a new quirk 'Force No Simple Suspend' to achieve a low power sleep without 'Simple Suspend'.
Signed-off-by: Werner Sembach wse@tuxedocomputers.com Signed-off-by: Georg Gottleuber ggo@tuxedocomputers.com Cc: stable@vger.kernel.org Reviewed-by: Christoph Hellwig hch@lst.de Signed-off-by: Keith Busch kbusch@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/nvme/host/nvme.h | 5 +++++ drivers/nvme/host/pci.c | 16 +++++++++++++++- 2 files changed, 20 insertions(+), 1 deletion(-)
--- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -154,6 +154,11 @@ enum nvme_quirks { * No temperature thresholds for channels other than 0 (Composite). */ NVME_QUIRK_NO_SECONDARY_TEMP_THRESH = (1 << 19), + + /* + * Disables simple suspend/resume path. + */ + NVME_QUIRK_FORCE_NO_SIMPLE_SUSPEND = (1 << 20), };
/* --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -2953,6 +2953,18 @@ static unsigned long check_vendor_combin if ((dmi_match(DMI_BOARD_VENDOR, "LENOVO")) && dmi_match(DMI_BOARD_NAME, "LNVNB161216")) return NVME_QUIRK_SIMPLE_SUSPEND; + } else if (pdev->vendor == 0x2646 && (pdev->device == 0x2263 || + pdev->device == 0x500f)) { + /* + * Exclude some Kingston NV1 and A2000 devices from + * NVME_QUIRK_SIMPLE_SUSPEND. Do a full suspend to save a + * lot fo energy with s2idle sleep on some TUXEDO platforms. + */ + if (dmi_match(DMI_BOARD_NAME, "NS5X_NS7XAU") || + dmi_match(DMI_BOARD_NAME, "NS5x_7xAU") || + dmi_match(DMI_BOARD_NAME, "NS5x_7xPU") || + dmi_match(DMI_BOARD_NAME, "PH4PRX1_PH6PRX1")) + return NVME_QUIRK_FORCE_NO_SIMPLE_SUSPEND; }
return 0; @@ -2993,7 +3005,9 @@ static struct nvme_dev *nvme_pci_alloc_d dev->dev = get_device(&pdev->dev);
quirks |= check_vendor_combination_bug(pdev); - if (!noacpi && acpi_storage_d3(&pdev->dev)) { + if (!noacpi && + !(quirks & NVME_QUIRK_FORCE_NO_SIMPLE_SUSPEND) && + acpi_storage_d3(&pdev->dev)) { /* * Some systems use a bios work around to ask for D3 on * platforms that support kernel managed suspend.