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Commit ec8137ae authored by Mohammed Siddiq's avatar Mohammed Siddiq Committed by Gerrit - the friendly Code Review server
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cnss2: WAR to trigger self-recovery for link recover callback 



Add WAR to trigger self-recovery on receiving event callback
MSM_PCIE_EVENT_LINK_RECOVER. Skip call to force assert when
mhi resume -ETIMEDOUT.

Change-Id: I05d3b2889e1983bab2509c1db2a3e45fdfe484d3
Signed-off-by: default avatarMohammed Siddiq <msiddiq@codeaurora.org>
parent 6897f46d

drivers/net/wireless/cnss2/pci.c

+23 −3
Original line number Diff line number Diff line
@@ -1196,7 +1196,7 @@ static int cnss_pci_set_mhi_state(struct cnss_pci_data *pci_priv, 
	cnss_pr_err("Failed to set MHI state: %s(%d) ret: %d\n",

		    cnss_mhi_state_to_str(mhi_state), mhi_state, ret);



	if (mhi_state == CNSS_MHI_RESUME)

	if (mhi_state == CNSS_MHI_RESUME && ret != -ETIMEDOUT)

		cnss_force_fw_assert_async(&pci_priv->pci_dev->dev);



	return ret;
@@ -2458,6 +2458,8 @@ static void cnss_pci_event_cb(struct msm_pcie_notify *notify) 
{

	struct pci_dev *pci_dev;

	struct cnss_pci_data *pci_priv;

	struct cnss_plat_data *plat_priv = NULL;

	int ret = 0;



	if (!notify)

		return;
@@ -2471,6 +2473,23 @@ static void cnss_pci_event_cb(struct msm_pcie_notify *notify) 
		return;



	switch (notify->event) {

	case MSM_PCIE_EVENT_LINK_RECOVER:

		cnss_pr_dbg("PCI link recover callback\n");



		plat_priv = pci_priv->plat_priv;

		if (!plat_priv) {

			cnss_pr_err("plat_priv is NULL\n");

			return;

		}



		plat_priv->ctrl_params.quirks |= BIT(LINK_DOWN_SELF_RECOVERY);



		ret = msm_pcie_pm_control(MSM_PCIE_HANDLE_LINKDOWN,

					  pci_dev->bus->number, pci_dev, NULL,

					  PM_OPTIONS_DEFAULT);

		if (ret)

			cnss_pci_handle_linkdown(pci_priv);

		break;

	case MSM_PCIE_EVENT_LINKDOWN:

		cnss_pr_dbg("PCI link down event callback\n");

		cnss_pci_handle_linkdown(pci_priv);
@@ -2510,7 +2529,8 @@ static int cnss_reg_pci_event(struct cnss_pci_data *pci_priv) 
	struct msm_pcie_register_event *pci_event;



	pci_event = &pci_priv->msm_pci_event;

	pci_event->events = MSM_PCIE_EVENT_LINKDOWN |

	pci_event->events = MSM_PCIE_EVENT_LINK_RECOVER |

			    MSM_PCIE_EVENT_LINKDOWN |

			    MSM_PCIE_EVENT_WAKEUP;



	if (cnss_pci_is_drv_supported(pci_priv))