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Date:   Fri, 14 Feb 2020 10:41:46 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Stephen Boyd <swboyd@...omium.org>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Sasha Levin <sashal@...nel.org>, linux-arm-msm@...r.kernel.org,
        linux-watchdog@...r.kernel.org
Subject: [PATCH AUTOSEL 5.5 114/542] watchdog: qcom: Use platform_get_irq_optional() for bark irq

From: Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>

[ Upstream commit e0b4f4e0cf7fa9d62628d4249c765ec18dffd143 ]

platform_get_irq() prints an error message when the interrupt
is not available. So on platforms where bark interrupt is
not specified, following error message is observed on SDM845.

[    2.975888] qcom_wdt 17980000.watchdog: IRQ index 0 not found

This is also seen on SC7180, SM8150 SoCs as well.
Fix this by using platform_get_irq_optional() instead.

Fixes: 36375491a4395654 ("watchdog: qcom: support pre-timeout when the bark irq is available")
Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>
Reviewed-by: Guenter Roeck <linux@...ck-us.net>
Reviewed-by: Stephen Boyd <swboyd@...omium.org>
Link: https://lore.kernel.org/r/20191213064934.4112-1-saiprakash.ranjan@codeaurora.org
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@...ux-watchdog.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/watchdog/qcom-wdt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/watchdog/qcom-wdt.c b/drivers/watchdog/qcom-wdt.c
index a494543d3ae1b..eb47fe5ed2805 100644
--- a/drivers/watchdog/qcom-wdt.c
+++ b/drivers/watchdog/qcom-wdt.c
@@ -246,7 +246,7 @@ static int qcom_wdt_probe(struct platform_device *pdev)
 	}
 
 	/* check if there is pretimeout support */
-	irq = platform_get_irq(pdev, 0);
+	irq = platform_get_irq_optional(pdev, 0);
 	if (irq > 0) {
 		ret = devm_request_irq(dev, irq, qcom_wdt_isr,
 				       IRQF_TRIGGER_RISING,
-- 
2.20.1

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