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| author | Linus Walleij <linus.walleij@linaro.org> | 2022-04-17 00:45:49 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2022-04-26 14:05:22 +0200 |
| commit | f7ad75041ba9b36d8141a1c0dd527154ed10b96e (patch) | |
| tree | 22d1ed594a3eea53eb3b8ad669b3a932fdd250e0 | |
| parent | 238b638b309093b77852137bcffd98702b95564f (diff) | |
| download | linux-f7ad75041ba9b36d8141a1c0dd527154ed10b96e.tar.bz2 | |
mmc: mmci: Break IRQ status loop when all zero
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@linaro.org>
Link: https://lore.kernel.org/r/20220416224549.627623-1-linus.walleij@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
| -rw-r--r-- | drivers/mmc/host/mmci.c | 2 |
1 files changed, 2 insertions, 0 deletions
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) |