From: Sebastian Andrzej Siewior Date: Tue, 13 Aug 2019 12:30:12 +0200 Subject: [PATCH 285/351] i2c: exynos5: Remove IRQF_ONESHOT Origin: https://git.kernel.org/cgit/linux/kernel/git/rt/linux-stable-rt.git/commit?id=07d92bd6d58b8af4f6e1eaa685ac0add6ffa1964 [ Upstream commit 4b217df0ab3f7910c96e42091cc7d9f221d05f01 ] The drivers sets IRQF_ONESHOT and passes only a primary handler. The IRQ is masked while the primary is handler is invoked independently of IRQF_ONESHOT. With IRQF_ONESHOT the core code will not force-thread the interrupt and this is probably not intended. I *assume* that the original author copied the IRQ registration from another driver which passed a primary and secondary handler and removed the secondary handler but keeping the ONESHOT flag. Remove IRQF_ONESHOT. Reported-by: Benjamin Rouxel Tested-by: Benjamin Rouxel Cc: Kukjin Kim Cc: Krzysztof Kozlowski Cc: linux-samsung-soc@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Steven Rostedt (VMware) --- drivers/i2c/busses/i2c-exynos5.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/i2c/busses/i2c-exynos5.c b/drivers/i2c/busses/i2c-exynos5.c index c1ce2299a76e..5c57ecf4b79e 100644 --- a/drivers/i2c/busses/i2c-exynos5.c +++ b/drivers/i2c/busses/i2c-exynos5.c @@ -800,9 +800,7 @@ static int exynos5_i2c_probe(struct platform_device *pdev) } ret = devm_request_irq(&pdev->dev, i2c->irq, exynos5_i2c_irq, - IRQF_NO_SUSPEND | IRQF_ONESHOT, - dev_name(&pdev->dev), i2c); - + IRQF_NO_SUSPEND, dev_name(&pdev->dev), i2c); if (ret != 0) { dev_err(&pdev->dev, "cannot request HS-I2C IRQ %d\n", i2c->irq); goto err_clk;