[PATCH 4.19 293/639] rtc: mt6397: Dont call irq_dispose_mapping.

[Greg Kroah-Hartman]

From: Pi-Hsun Shih <pihsun@xxxxxxxxxxxx>

[ Upstream commit 24db953e942bd7a983e97892bdaddf69d00b1199 ]

The IRQ mapping was changed to not being created in the rtc-mt6397
driver, so the irq_dispose_mapping is no longer needed.
Also the dev_id passed to free_irq should be the same as the last
argument passed to request_threaded_irq.
This prevents a "Trying to free already-free IRQ 274" warning when
unbinding the driver.

Fixes: e695d3a0b3b3 ("mfd: mt6397: Create irq mappings in mfd core driver")
Signed-off-by: Pi-Hsun Shih <pihsun@xxxxxxxxxxxx>
Signed-off-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/rtc/rtc-mt6397.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/rtc/rtc-mt6397.c b/drivers/rtc/rtc-mt6397.c
index f85f1fc29e32e..964ed91416e1b 100644
--- a/drivers/rtc/rtc-mt6397.c
+++ b/drivers/rtc/rtc-mt6397.c
@@ -362,7 +362,7 @@ static int mtk_rtc_probe(struct platform_device *pdev)
 	if (ret) {
 		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
 			rtc->irq, ret);
-		goto out_dispose_irq;
+		return ret;
 	}
 
 	device_init_wakeup(&pdev->dev, 1);
@@ -378,9 +378,7 @@ static int mtk_rtc_probe(struct platform_device *pdev)
 	return 0;
 
 out_free_irq:
-	free_irq(rtc->irq, rtc->rtc_dev);
-out_dispose_irq:
-	irq_dispose_mapping(rtc->irq);
+	free_irq(rtc->irq, rtc);
 	return ret;
 }
 
@@ -388,8 +386,7 @@ static int mtk_rtc_remove(struct platform_device *pdev)
 {
 	struct mt6397_rtc *rtc = platform_get_drvdata(pdev);
 
-	free_irq(rtc->irq, rtc->rtc_dev);
-	irq_dispose_mapping(rtc->irq);
+	free_irq(rtc->irq, rtc);
 
 	return 0;
 }
-- 
2.20.1