We iterate an extra time through the IRQ status handling
loop despite nothing had fired. Enabling the debug prints:
mmci-pl18x 80005000.mmc: op 01 arg 00000000 flags 000000e1
mmci-pl18x 80005000.mmc: irq0 (data+cmd) 00000001
mmci-pl18x 80005000.mmc: irq0 (data+cmd) 00000000
mmci-pl18x 80005000.mmc: op 01 arg 40ff8080 flags 000000e1
mmci-pl18x 80005000.mmc: irq0 (data+cmd) 00000001
mmci-pl18x 80005000.mmc: irq0 (data+cmd) 00000000
It is pointless to loop through the function when status
is zero. Just break the loop if the status is zero.
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
drivers/mmc/host/mmci.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 45b8608c935c..f3cf3152a397 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -1619,6 +1619,8 @@ static irqreturn_t mmci_irq(int irq, void *dev_id)
do {
status = readl(host->base + MMCISTATUS);
+ if (!status)
+ break;
if (host->singleirq) {
if (status & host->mask1_reg)
--
2.35.1
