diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 500b790442c9..a51946a35dcf 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -1109,6 +1109,15 @@ int nvme_disable_ctrl(struct nvme_ctrl *ctrl, u64 cap) ret = ctrl->ops->reg_write32(ctrl, NVME_REG_CC, ctrl->ctrl_config); if (ret) return ret; + + /* Checking for ctrl->tagset is a trick to avoid sleeping on module + * load, since we only need the quirk on reset_controller. Notice + * that the HGST device needs this delay only in firmware activation + * procedure; unfortunately we have no (easy) way to verify this. + */ + if ((ctrl->quirks & NVME_QUIRK_DELAY_BEFORE_CHK_RDY) && ctrl->tagset) + msleep(NVME_QUIRK_DELAY_AMOUNT); + return nvme_wait_ready(ctrl, cap, false); } EXPORT_SYMBOL_GPL(nvme_disable_ctrl); diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index abe83b43a71a..1bd42d5f9e0e 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -68,8 +68,21 @@ enum nvme_quirks { * logical blocks. */ NVME_QUIRK_DISCARD_ZEROES = (1 << 2), + + /* + * The controller needs a delay before starts checking the device + * readiness, which is done by reading the NVME_CSTS_RDY bit. + */ + NVME_QUIRK_DELAY_BEFORE_CHK_RDY = (1 << 3), }; +/* The below value is the specific amount of delay needed before checking + * readiness in case of the PCI_DEVICE(0x1c58, 0x0003), which needs the + * NVME_QUIRK_DELAY_BEFORE_CHK_RDY quirk enabled. The value (in ms) was + * found empirically. + */ +#define NVME_QUIRK_DELAY_AMOUNT 2000 + enum nvme_ctrl_state { NVME_CTRL_NEW, NVME_CTRL_LIVE, diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 79a4f56c06cd..846a42977068 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -2094,6 +2094,8 @@ static const struct pci_device_id nvme_id_table[] = { NVME_QUIRK_DISCARD_ZEROES, }, { PCI_VDEVICE(INTEL, 0x5845), /* Qemu emulated controller */ .driver_data = NVME_QUIRK_IDENTIFY_CNS, }, + { PCI_DEVICE(0x1c58, 0x0003), /* HGST adapter */ + .driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY, }, { PCI_DEVICE_CLASS(PCI_CLASS_STORAGE_EXPRESS, 0xffffff) }, { PCI_DEVICE(PCI_VENDOR_ID_APPLE, 0x2001) }, { 0, }