crypto: picoxcell - Fix potential race condition bug
[ Upstream commit 64f4a62e3b17f1e473f971127c2924cae42afc82 ]
engine->stat_irq_thresh was initialized after device_create_file() in
the probe function, the initialization may race with call to
spacc_stat_irq_thresh_store() which updates engine->stat_irq_thresh,
therefore initialize it before creating the file in probe function.
Found by Linux Driver Verification project (linuxtesting.org).
Fixes: ce92136843
("crypto: picoxcell - add support for the...")
Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
Acked-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
parent
ae2de89495
commit
90b14b4fb5
@ -1701,11 +1701,6 @@ static int spacc_probe(struct platform_device *pdev)
|
||||
goto err_clk_put;
|
||||
}
|
||||
|
||||
ret = device_create_file(&pdev->dev, &dev_attr_stat_irq_thresh);
|
||||
if (ret)
|
||||
goto err_clk_disable;
|
||||
|
||||
|
||||
/*
|
||||
* Use an IRQ threshold of 50% as a default. This seems to be a
|
||||
* reasonable trade off of latency against throughput but can be
|
||||
@ -1713,6 +1708,10 @@ static int spacc_probe(struct platform_device *pdev)
|
||||
*/
|
||||
engine->stat_irq_thresh = (engine->fifo_sz / 2);
|
||||
|
||||
ret = device_create_file(&pdev->dev, &dev_attr_stat_irq_thresh);
|
||||
if (ret)
|
||||
goto err_clk_disable;
|
||||
|
||||
/*
|
||||
* Configure the interrupts. We only use the STAT_CNT interrupt as we
|
||||
* only submit a new packet for processing when we complete another in
|
||||
|
Loading…
Reference in New Issue
Block a user