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From:   Sasha Levin <Alexander.Levin@microsoft.com>
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        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
CC:     Hanna Hawa <hannah@marvell.com>, Vinod Koul <vkoul@kernel.org>,
        Sasha Levin <Alexander.Levin@microsoft.com>
Subject: [PATCH AUTOSEL 4.18 83/88] dmaengine: mv_xor_v2: kill the tasklets
 upon exit
Thread-Topic: [PATCH AUTOSEL 4.18 83/88] dmaengine: mv_xor_v2: kill the
 tasklets upon exit
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Date:   Fri, 7 Sep 2018 00:36:50 +0000
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From: Hanna Hawa <hannah@marvell.com>

[ Upstream commit 8bbafed8dd5cfa81071b50ead5cb60367fdef3a9 ]

The mv_xor_v2 driver uses a tasklet, initialized during the probe()
routine. However, it forgets to cleanup the tasklet using
tasklet_kill() function during the remove() routine, which this patch
fixes. This prevents the tasklet from potentially running after the
module has been removed.

Fixes: 19a340b1a820 ("dmaengine: mv_xor_v2: new driver")

Signed-off-by: Hanna Hawa <hannah@marvell.com>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 drivers/dma/mv_xor_v2.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/dma/mv_xor_v2.c b/drivers/dma/mv_xor_v2.c
index c6589ccf1b9a..d349fedf4ab2 100644
--- a/drivers/dma/mv_xor_v2.c
+++ b/drivers/dma/mv_xor_v2.c
@@ -899,6 +899,8 @@ static int mv_xor_v2_remove(struct platform_device *pde=
v)
=20
 	platform_msi_domain_free_irqs(&pdev->dev);
=20
+	tasklet_kill(&xor_dev->irq_tasklet);
+
 	clk_disable_unprepare(xor_dev->clk);
=20
 	return 0;
--=20
2.17.1