WCN7850 problem on Linux kernel 6.15

[Doug Brewer]

Hello,

After upgrading to kernel 6.15, my ath12k failed to start:ath12k_pci
0000:03:00.0: BAR 0 [mem 0xdf000000-0xdf1fffff 64bit]: assigned
ath12k_pci 0000:03:00.0: enabling device (0000 -> 0002)
ath12k_pci 0000:03:00.0: MSI vectors: 16
ath12k_pci 0000:03:00.0: Hardware name: wcn7850 hw2.0
NET: Registered PF_QIPCRTR protocol family
pcieport 0000:00:1d.0: AER: Multiple Uncorrectable (Non-Fatal) error message rec
eived from 0000:00:1d.0
pcieport 0000:00:1d.0: PCIe Bus Error: severity=Uncorrectable (Non-Fatal), type=
Transaction Layer, (Completer ID)
pcieport 0000:00:1d.0:   device [8086:9d18] error status/mask=00008000/00010000
pcieport 0000:00:1d.0:    [15] CmpltAbrt              (First)
pcieport 0000:00:1d.0: AER:   TLP Header: 0x00000000 0x00000000 0x00000000 0x000
00000
mhi mhi0: Requested to power ON
mhi mhi0: Power on setup success
mhi mhi0: Wait for device to enter SBL or Mission mode
ath12k_pci 0000:03:00.0: AER: can't recover (no error_detected callback)
pcieport 0000:00:1d.0: AER: device recovery failed
ath12k_pci 0000:03:00.0: qmi dma allocation failed (7012352 B type 1),
will try later with small size
ath12k_pci 0000:03:00.0: chip_id 0x2 chip_family 0x4 board_id 0xff
soc_id 0x40170200
ath12k_pci 0000:03:00.0: fw_version 0x1108811c fw_build_timestamp 2025-05-17 00:
21 fw_build_id QC_IMAGE_VERSION_STRING=WLAN.HMT.1.1.c5-00284.1-QCAHMTSWPL_V1.0_V
2.0_SILICONZ-3
ath12k_pci 0000:03:00.0: ignore reset dev flags 0x200
ath12k_pci 0000:03:00.0: failed to receive wmi unified ready event: -110
ath12k_pci 0000:03:00.0: failed to start core: -110
failed to send QMI message
ath12k_pci 0000:03:00.0: qmi failed to send mode request, mode: 4, err = -5
ath12k_pci 0000:03:00.0: qmi failed to send wlan mode off