[PATCH AUTOSEL 4.19 278/671] rtc: mt6397: Don't call irq_dispose_mapping.

Sasha Levin
2020-01-16T17:05:48Z

From: Pi-Hsun Shih <pihsun@chromium.org>

[ 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@chromium.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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 e9a25ec4d434..c06cf5202e02 100644
--- a/drivers/rtc/rtc-mt6397.c
+++ b/drivers/rtc/rtc-mt6397.c
@@ -343,7 +343,7 @@ 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);
@@ -359,9 +359,7 @@ 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;
}

@@ -369,8 +367,7 @@ 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