nvme: add a Identify Namespace Identification Descriptor list quirk

Add a quirk for a device that does not support the Identify Namespace
Identification Descriptor list despite claiming 1.3 compliance.

Fixes: ea43d9709f72 ("nvme: fix identify error status silent ignore")
Reported-by: Ingo Brunberg <ingo_brunberg@web.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Ingo Brunberg <ingo_brunberg@web.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index add0401..4ee2330 100644 (file)
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1102,6 +1102,9 @@ static int nvme_identify_ns_descs(struct nvme_ctrl *ctrl, unsigned nsid,
        int pos;
        int len;
 
+       if (ctrl->quirks & NVME_QUIRK_NO_NS_DESC_LIST)
+               return 0;
+
        c.identify.opcode = nvme_admin_identify;
        c.identify.nsid = cpu_to_le32(nsid);
        c.identify.cns = NVME_ID_CNS_NS_DESC_LIST;
@@ -1115,18 +1118,6 @@ static int nvme_identify_ns_descs(struct nvme_ctrl *ctrl, unsigned nsid,
        if (status) {
                dev_warn(ctrl->device,
                        "Identify Descriptors failed (%d)\n", status);
-                /*
-                 * Don't treat non-retryable errors as fatal, as we potentially
-                 * already have a NGUID or EUI-64.  If we failed with DNR set,
-                 * we want to silently ignore the error as we can still
-                 * identify the device, but if the status has DNR set, we want
-                 * to propagate the error back specifically for the disk
-                 * revalidation flow to make sure we don't abandon the
-                 * device just because of a temporal retry-able error (such
-                 * as path of transport errors).
-                 */
-               if (status > 0 && (status & NVME_SC_DNR))
-                       status = 0;
                goto free_data;
        }
 

diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 1de3f9b..09ffc32 100644 (file)
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -129,6 +129,13 @@ enum nvme_quirks {
         * Don't change the value of the temperature threshold feature
         */
        NVME_QUIRK_NO_TEMP_THRESH_CHANGE        = (1 << 14),
+
+       /*
+        * The controller doesn't handle the Identify Namespace
+        * Identification Descriptor list subcommand despite claiming
+        * NVMe 1.3 compliance.
+        */
+       NVME_QUIRK_NO_NS_DESC_LIST              = (1 << 15),
 };
 
 /*

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 25a187e..d4b1ff7 100644 (file)
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -3099,6 +3099,8 @@ static const struct pci_device_id nvme_id_table[] = {
        { PCI_VDEVICE(INTEL, 0x5845),   /* Qemu emulated controller */
                .driver_data = NVME_QUIRK_IDENTIFY_CNS |
                                NVME_QUIRK_DISABLE_WRITE_ZEROES, },
+       { PCI_DEVICE(0x126f, 0x2263),   /* Silicon Motion unidentified */
+               .driver_data = NVME_QUIRK_NO_NS_DESC_LIST, },
        { PCI_DEVICE(0x1bb1, 0x0100),   /* Seagate Nytro Flash Storage */
                .driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY, },
        { PCI_DEVICE(0x1c58, 0x0003),   /* HGST adapter */