[PATCH] mmc: mediatek: Avoid ugly error message when SDIO wakeup IRQ isn't used

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When I boot a kukui-kodama board, I see an ugly warning in my kernel
log:
  mtk-msdc 11240000.mmc: error -ENXIO: IRQ sdio_wakeup not found

It's pretty normal not to have an "sdio_wakeup" IRQ defined. In fact,
no device trees in mainline seem to have it. Let's use the
platform_get_irq_byname_optional() to avoid the error message.

Fixes: 527f36f5efa4 ("mmc: mediatek: add support for SDIO eint wakup IRQ")
Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
---

 drivers/mmc/host/mtk-sd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index edade0e54a0c..8ce864169986 100644
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -2707,7 +2707,7 @@ static int msdc_drv_probe(struct platform_device *pdev)
 
 	/* Support for SDIO eint irq ? */
 	if ((mmc->pm_caps & MMC_PM_WAKE_SDIO_IRQ) && (mmc->pm_caps & MMC_PM_KEEP_POWER)) {
-		host->eint_irq = platform_get_irq_byname(pdev, "sdio_wakeup");
+		host->eint_irq = platform_get_irq_byname_optional(pdev, "sdio_wakeup");
 		if (host->eint_irq > 0) {
 			host->pins_eint = pinctrl_lookup_state(host->pinctrl, "state_eint");
 			if (IS_ERR(host->pins_eint)) {
-- 
2.40.1.521.gf1e218fcd8-goog




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