From 2bc6b218717b9d08f466f88209251d54bc09b207 Mon Sep 17 00:00:00 2001 From: Fuad Tabba Date: Tue, 22 Sep 2026 19:14:30 +0100 Subject: arm64/boot: Disable trapping of PMZR_EL0 writes to EL2 __init_el2_fgt2() writes one mask to both HDFGRTR2_EL2 and HDFGWTR2_EL2. PMZR_EL0 is write-only, so its trap bit, nPMZR_EL0, exists only in HDFGWTR2_EL2 and is therefore never set: a PMZR_EL0 write from the host traps to EL2, where the nVHE hypervisor has no handler and BUG()s. The kernel never writes PMZR_EL0, but kernel.perf_user_access=1 has the PMU driver set PMUSERENR_EL0.UEN for a task with a user-read event, so a write from EL0 reaches the trap and takes the host down without a panic message. Accumulate the HDFGWTR2_EL2 bits separately, as __init_el2_fgt() already does for HDFGWTR_EL2, and set nPMZR_EL0 with the other FEAT_PMUv3p9 bits. Fixes: 858c7bfcb35e1 ("arm64/boot: Enable EL2 requirements for FEAT_PMUv3p9") Cc: stable@vger.kernel.org Signed-off-by: Fuad Tabba Reviewed-by: Anshuman Khandual Reviewed-by: Oliver Upton Signed-off-by: Will Deacon --- drivers/usb/image/microtek.h | 55 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 drivers/usb/image/microtek.h (limited to 'drivers/usb/image/microtek.h') diff --git a/drivers/usb/image/microtek.h b/drivers/usb/image/microtek.h new file mode 100644 index 000000000..7bd5f4639 --- /dev/null +++ b/drivers/usb/image/microtek.h @@ -0,0 +1,55 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + /* + * Driver for Microtek Scanmaker X6 USB scanner and possibly others. + * + * (C) Copyright 2000 John Fremlin + * (C) Copyright 2000 Oliver Neukum + * + * See microtek.c for history + * + */ + +typedef void (*mts_scsi_cmnd_callback)(struct scsi_cmnd *); + + +struct mts_transfer_context +{ + struct mts_desc *instance; + mts_scsi_cmnd_callback final_callback; + struct scsi_cmnd *srb; + + void *data; + unsigned data_length; + int data_pipe; + struct scatterlist *curr_sg; + + u8 *scsi_status; /* status returned from ep_response after command completion */ +}; + + +struct mts_desc { + struct mts_desc *next; + struct mts_desc *prev; + + struct usb_device *usb_dev; + struct usb_interface *usb_intf; + + /* Endpoint addresses */ + u8 ep_out; + u8 ep_response; + u8 ep_image; + + struct Scsi_Host *host; + + struct urb *urb; + struct mts_transfer_context context; +}; + + +#define MTS_EP_OUT 0x1 +#define MTS_EP_RESPONSE 0x2 +#define MTS_EP_IMAGE 0x3 +#define MTS_EP_TOTAL 0x3 + +#define MTS_SCSI_ERR_MASK ~0x3fu + -- cgit v1.3.1