1. 24 Aug, 2018 3 commits
    • YueHaibing's avatar
      wcn36xx: use dma_zalloc_coherent instead of allocator/memset · d410e28f
      YueHaibing authored
      Use dma_zalloc_coherent instead of dma_alloc_coherent
      followed by memset 0.
      Signed-off-by: default avatarYueHaibing <yuehaibing@huawei.com>
      Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
      d410e28f
    • YueHaibing's avatar
      wcn36xx: Use kmemdup instead of duplicating it in wcn36xx_smd_process_ptt_msg_rsp · 3f96556f
      YueHaibing authored
      Replace calls to kmalloc followed by a memcpy with a direct call to
      kmemdup.
      Signed-off-by: default avatarYueHaibing <yuehaibing@huawei.com>
      Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
      3f96556f
    • Tamizh chelvam's avatar
      ath10k: fix kernel panic by moving pci flush after napi_disable · bd1d3950
      Tamizh chelvam authored
      When continuously running wifi up/down sequence, the napi poll
      can be scheduled after the CE buffers being freed by ath10k_pci_flush
      
      Steps:
        In a certain condition, during wifi down below scenario might occur.
      
      ath10k_stop->ath10k_hif_stop->napi_schedule->ath10k_pci_flush->napi_poll(napi_synchronize).
      
      In the above scenario, CE buffer entries will be freed up and become NULL in
      ath10k_pci_flush. And the napi_poll has been invoked after the flush process
      and it will try to get the skb from the CE buffer entry and perform some action on that.
      Since the CE buffer already cleaned by pci flush this action will create NULL
      pointer dereference and trigger below kernel panic.
      
      Unable to handle kernel NULL pointer dereference at virtual address 0000005c
      PC is at ath10k_pci_htt_rx_cb+0x64/0x3ec [ath10k_pci]
      ath10k_pci_htt_rx_cb [ath10k_pci]
      ath10k_ce_per_engine_service+0x74/0xc4 [ath10k_pci]
      ath10k_ce_per_engine_service [ath10k_pci]
      ath10k_ce_per_engine_service_any+0x74/0x80 [ath10k_pci]
      ath10k_ce_per_engine_service_any [ath10k_pci]
      ath10k_pci_napi_poll+0x48/0xec [ath10k_pci]
      ath10k_pci_napi_poll [ath10k_pci]
      net_rx_action+0xac/0x160
      net_rx_action
      __do_softirq+0xdc/0x208
      __do_softirq
      irq_exit+0x84/0xe0
      irq_exit
      __handle_domain_irq+0x80/0xa0
      __handle_domain_irq
      gic_handle_irq+0x38/0x5c
      gic_handle_irq
      __irq_usr+0x44/0x60
      
      Tested on QCA4019 and firmware version 10.4.3.2.1.1-00010
      Signed-off-by: default avatarTamizh chelvam <tamizhr@codeaurora.org>
      Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
      bd1d3950
  2. 06 Aug, 2018 37 commits