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| Filename | Latest commit message | Latest commit date |
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d75c4ea61c
Issue1: Driver RTPM state is ON/NONE, Kernel state is RESUMING. cdp_runtime_resume is already complete, hif_pm_runtime_get return -E_INPROGRESS, dp_tx_hw_enqueue will set the flush event, but cdp_runtime_resume is already done, this flush event will be handled only on next pkt tx. Issue2: Driver RTPM state: Resuming hif_pm_runtime_get returns -EBUSY, dp_tx_hw_enqueue is interrupted by any IRQ, cdp_runtime_resume is completed, dp_tx_hw_enqueue will set the flush event, This flush event will be handled only on next pkt tx. Fix: Introduce a link_state_up atomic variable in hif to track the link state change by pld_cb. Set atomic variable link_state_up=1 in pmo_core_psoc_bus_runtime_resume just after pld_cb. pld_cb brings the PCIe bus out of suspend state. Set atomic variable link_state_up=0 in pmo_core_psoc_bus_runtime_suspend just before pld_cb. pld_cb puts the PCIe bus into suspend state. Introduce dp_runtime_get and dp_runtime_put. dp_runtime_get get refcount with increment of an atomic variable. dp_runtime_put return refcount with decrement of this atomic variable. If hif_pm_runtime_get returns -EBUSY or -EINPROGRESS, take the dp runtime refcount using dp_runtime_get, check if the link state is up, write TX ring HP, return the dp runtime refcount using dp_runtime_put. cdp_runtime_suspend should reject the suspend, if dp_runtime_get is non zero. cdp_runtime_resume should wait until dp_runtime_get becomes zero or time out, then flush pending tx for runtime suspend. Change-Id: I7f38b3dc6975fcc208ad85e913564dfef5cc1cb7 CRs-Fixed: 2849002 |
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This is CNSS WLAN Host Driver for products starting from iHelium