• Baochen Qiang's avatar
    ath11k: Fix unexpected return buffer manager error for QCA6390 · 71c748b5
    Baochen Qiang authored
    We are seeing below error on QCA6390:
    ...
    [70211.671189] ath11k_pci 0000:72:00.0: failed to parse rx error in wbm_rel ring desc -22
    [70212.696154] ath11k_pci 0000:72:00.0: failed to parse rx error in wbm_rel ring desc -22
    [70213.092941] ath11k_pci 0000:72:00.0: failed to parse rx error in wbm_rel ring desc -22
    ...
    
    The reason is that, with commit 734223d7 ("ath11k: change return
    buffer manager for QCA6390"), ath11k expects the return buffer manager
    (RBM) field of descriptor configured as HAL_RX_BUF_RBM_SW1_BM when
    parsing error frames from WBM2SW3_RELEASE ring. This is a wrong change
    cause the RBM field is set as HAL_RX_BUF_RBM_SW3_BM.
    
    The same issue also applies to REO2TCL ring though we have not got any
    error reported.
    
    Fix it by changing RBM from HAL_RX_BUF_RBM_SW1_BM to HAL_RX_BUF_RBM_SW3_BM
    for these two rings.
    
    Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1
    
    Fixes: 734223d7 ("ath11k: change return buffer manager for QCA6390")
    Signed-off-by: default avatarBaochen Qiang <quic_bqiang@quicinc.com>
    Signed-off-by: default avatarKalle Valo <quic_kvalo@quicinc.com>
    Link: https://lore.kernel.org/r/20211222013536.582527-1-quic_bqiang@quicinc.com
    71c748b5
hal_rx.c 40.1 KB