From 49e089f9173aaf001ed82a250f8ff0ce6f585ac4 Mon Sep 17 00:00:00 2001 From: Valentine Barshak Date: Fri, 22 Feb 2019 02:55:02 +0300 Subject: [PATCH 072/122] nvme: Workaround Samsung 970 Pro power state issues Sometimes Samsung 970 Pro NVME device just disappears. Looks like it drops into deep sleep mode during I/O. This behaviour has been observed at least on R-Car Gen3 H3ULCB and M3ULC Kingfisher boards. Add a quirk that disables deep sleep mode for the device. Signed-off-by: Valentine Barshak --- drivers/nvme/host/pci.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index afb9987..a6c0789 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -2557,6 +2557,8 @@ static const struct pci_device_id nvme_id_table[] = { .driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY, }, { PCI_DEVICE(0x1c5f, 0x0540), /* Memblaze Pblaze4 adapter */ .driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY, }, + { PCI_DEVICE(0x144d, 0xa808), /* Samsung 970 Pro */ + .driver_data = NVME_QUIRK_NO_DEEPEST_PS }, { PCI_DEVICE(0x144d, 0xa821), /* Samsung PM1725 */ .driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY, }, { PCI_DEVICE(0x144d, 0xa822), /* Samsung PM1725a */ -- 2.7.4