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mt76: mt7663: check isr read return value in mt7663s_rx_work

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In order to avoid using stale isr values, check return value from
sdio_readsb() in mt7663s_rx_work()

Tested-by: Sean Wang <[email protected]>
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Lorenzo Bianconi
2020-09-08 23:44:29 +02:00
committed by Felix Fietkau
parent 979c0fdc5d
commit 56e77a3a3a
1 changed files with 5 additions and 2 deletions
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mt7615/sdio_txrx.c
+5 -2
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@@ -278,9 +278,12 @@ void mt7663s_rx_work(struct work_struct *work)
/* disable interrupt */
sdio_claim_host(sdio->func);
sdio_writel(sdio->func, WHLPCR_INT_EN_CLR, MCR_WHLPCR, NULL);
sdio_readsb(sdio->func, intr, MCR_WHISR, sizeof(struct mt76s_intr));
ret = sdio_readsb(sdio->func, intr, MCR_WHISR, sizeof(*intr));
sdio_release_host(sdio->func);
if (ret < 0)
goto out;
trace_dev_irq(dev, intr->isr, 0);
if (intr->isr & WHIER_RX0_DONE_INT_EN) {
@@ -306,7 +309,7 @@ void mt7663s_rx_work(struct work_struct *work)
queue_work(sdio->txrx_wq, &sdio->rx.recv_work);
return;
}
out:
/* enable interrupt */
sdio_claim_host(sdio->func);
sdio_writel(sdio->func, WHLPCR_INT_EN_SET, MCR_WHLPCR, NULL);