4.9-stable review patch. If anyone has any objections, please let me know.
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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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/dma/mv_xor_v2.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/dma/mv_xor_v2.c +++ b/drivers/dma/mv_xor_v2.c @@ -844,6 +844,8 @@ static int mv_xor_v2_remove(struct platf
platform_msi_domain_free_irqs(&pdev->dev);
+ tasklet_kill(&xor_dev->irq_tasklet); + clk_disable_unprepare(xor_dev->clk);
return 0;