From 9228de2a5229cbfcb9ae30454d28417e8134bf2a Mon Sep 17 00:00:00 2001 From: Tina Hsu Date: Thu, 22 Sep 2022 14:16:30 +0800 Subject: [PATCH] nvme-pci: disable Write Zeroes on Phison E3C/E4C E3C/E4C SSDs do support the Write Zeroes command in theory, but have very bad performance when using it. As the firmware has been frozen for these products we can not expect firmware improvements for it, so disable Write Zeroes. Signed-off-by: Tina Hsu [hch: update the commit message] Signed-off-by: Christoph Hellwig --- drivers/nvme/host/pci.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index ca15602401235..3bdb97205699c 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -3475,6 +3475,10 @@ static const struct pci_device_id nvme_id_table[] = { { PCI_DEVICE(0x1987, 0x5016), /* Phison E16 */ .driver_data = NVME_QUIRK_IGNORE_DEV_SUBNQN | NVME_QUIRK_BOGUS_NID, }, + { PCI_DEVICE(0x1987, 0x5019), /* phison E19 */ + .driver_data = NVME_QUIRK_DISABLE_WRITE_ZEROES, }, + { PCI_DEVICE(0x1987, 0x5021), /* Phison E21 */ + .driver_data = NVME_QUIRK_DISABLE_WRITE_ZEROES, }, { PCI_DEVICE(0x1b4b, 0x1092), /* Lexar 256 GB SSD */ .driver_data = NVME_QUIRK_NO_NS_DESC_LIST | NVME_QUIRK_IGNORE_DEV_SUBNQN, }, -- 2.39.5