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

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@chromium.org>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Link: https://lore.kernel.org/r/20230510064434.1.I935404c5396e6bf952e99bb7ffb744c6f7fd430b@changeid
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index edade0e..8ce8641 100644 (file)
--- 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)) {