From: Tina Hsu <tina_hsu@phison.corp-partner.google.com>
Date: Thu, 22 Sep 2022 14:16:30 +0800
Subject: nvme-pci: disable Write Zeroes on Phison E3C/E4C
Patch-mainline: v6.0
Git-commit: d14c273132aec81a1a8107c9ab4865b89e7910a7
References: jsc#PED-1183

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 <tina_hsu@phison.corp-partner.google.com>
[hch: update the commit message]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Daniel Wagner <dwagner@suse.de>
---
 drivers/nvme/host/pci.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -3461,6 +3461,10 @@ static const struct pci_device_id nvme_i
 	{ 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, },