[PATCH] mt76: sdio: disable interrupt in mt76s_sdio_irq

[sean.wang at mediatek.com]

From: Sean Wang <sean.wang at mediatek.com>

It is unnecessary to keep the interrupt enabled in mt76s_sdio_irq because
the driver is already aware of the interrupt, schedules the
mt76s_txrx_worker to handle the corresponding actions, and eventually,
the interrupt would be enabled again when mt76s_txrx_worker finishes its
work.

So we can safely disable the interrupt in mt76s_sdio_irq as soon as
possible to increase the CPU productivity by dropping the redundant
interrupt triggers.

Note that sdio lock acquired/released would be handled in sdio_irq_work
at mmc driver so we don't take care in mt76s_sdio_irq at function driver.

Co-developed-by: Leon Yen <leon.yen at mediatek.com>
Signed-off-by: Leon Yen <leon.yen at mediatek.com>
Co-developed-by: Deren Wu <deren.wu at mediatek.com>
Signed-off-by: Deren Wu <deren.wu at mediatek.com>
Signed-off-by: Sean Wang <sean.wang at mediatek.com>
---
 drivers/net/wireless/mediatek/mt76/sdio_txrx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/mediatek/mt76/sdio_txrx.c b/drivers/net/wireless/mediatek/mt76/sdio_txrx.c
index f2b46975d831..488ad7734d85 100644
--- a/drivers/net/wireless/mediatek/mt76/sdio_txrx.c
+++ b/drivers/net/wireless/mediatek/mt76/sdio_txrx.c
@@ -349,6 +349,7 @@ void mt76s_sdio_irq(struct sdio_func *func)
 	    test_bit(MT76_MCU_RESET, &dev->phy.state))
 		return;
 
+	sdio_writel(sdio->func, WHLPCR_INT_EN_CLR, MCR_WHLPCR, NULL);
 	mt76_worker_schedule(&sdio->txrx_worker);
 }
 EXPORT_SYMBOL_GPL(mt76s_sdio_irq);
-- 
2.25.1