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wifi: rtw89: pci: fix interrupt stuck after leaving low power mode

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We turn off interrupt in ISR, and re-enable interrupt in threadfn or
napi_poll according to the mode it stays. If we are turning off interrupt,
rtwpci->running flag is unset and interrupt handler stop processing even
if it was called, so disallow to re-enable interrupt in this situation.
Or, wifi chip doesn't trigger interrupt events anymore because interrupt
status (ISR) isn't clear by interrupt handler anymore.

Fixes: c83dcd0508 ("rtw89: pci: add a separate interrupt handler for low power mode")
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220824063312.15784-1-pkshih@realtek.com
This commit is contained in:
Ping-Ke Shih 2022-08-24 14:33:11 +08:00 committed by Kalle Valo
parent 9bea576175
commit b7e715d3dc
1 changed files with 2 additions and 1 deletions
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3
drivers/net/wireless/realtek/rtw89/pci.c
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@ -760,7 +760,8 @@ static irqreturn_t rtw89_pci_interrupt_threadfn(int irq, void *dev)
enable_intr:
spin_lock_irqsave(&rtwpci->irq_lock, flags);
rtw89_chip_enable_intr(rtwdev, rtwpci);
if (likely(rtwpci->running))
rtw89_chip_enable_intr(rtwdev, rtwpci);
spin_unlock_irqrestore(&rtwpci->irq_lock, flags);
return IRQ_HANDLED;
}