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

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Message-ID: <20230510064434.1.I935404c5396e6bf952e99bb7ffb744c6f7fd430b@changeid>
Date:   Wed, 10 May 2023 06:44:54 -0700
From:   Douglas Anderson <dianders@...omium.org>
To:     Chaotian Jing <chaotian.jing@...iatek.com>,
        Ulf Hansson <ulf.hansson@...aro.org>
Cc:     Douglas Anderson <dianders@...omium.org>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Yong Mao <yong.mao@...iatek.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mediatek@...ts.infradead.org, linux-mmc@...r.kernel.org
Subject: [PATCH] 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@...omium.org>
---

 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