android/android_kernel_xiaomi_sm8450
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msm: ep-pcie: Enable global IRQ after enumeration

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The global irqs are being enabled before EP driver has completed
successful link enumeration. This causes a race condition where
the BME IRQ is processed before link up causing the link up to
exit before updating the link status. Any further processing results
in LINK_DISABLED error. Avoid this scenario by enabling the global
interrupts after enumeration has finished.

Change-Id: I983a35f461da5d8966cadc9918b5529d16182b47
Signed-off-by: Gauri Joshi <gaurjosh@codeaurora.org>
This commit is contained in:
Gauri Joshi 2021-08-11 14:50:24 -07:00 committed by Lakshmi Prasanna Meka
parent 9eb990d0a9
commit e9b647b739
1 changed files with 2 additions and 0 deletions
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2
drivers/platform/msm/ep_pcie/ep_pcie_core.c
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@ -2596,6 +2596,7 @@ int32_t ep_pcie_irq_init(struct ep_pcie_dev_t *dev)
INIT_WORK(&dev->handle_d3cold_work, handle_d3cold_func);
if (dev->aggregated_irq) {
irq_set_status_flags(dev->irq[EP_PCIE_INT_GLOBAL].num, IRQ_NOAUTOEN);
ret = devm_request_irq(pdev,
dev->irq[EP_PCIE_INT_GLOBAL].num,
ep_pcie_handle_global_irq,
@ -3440,6 +3441,7 @@ static int ep_pcie_probe(struct platform_device *pdev)
qcom_edma_init(&pdev->dev);
enable_irq(ep_pcie_dev.irq[EP_PCIE_INT_GLOBAL].num);
return 0;
irq_deinit: