| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.11 499/601] i2c: mlxbf: add IRQ check | Date | Wed, 12 May 2021 16:49:36 +0200 |
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From: Sergey Shtylyov <s.shtylyov@omprussia.ru>
[ Upstream commit 0d3bf53e897dce943b98d975bbde77156af6cd81 ]
The driver neglects to check the result of platform_get_irq()'s call and blithely passes the negative error codes to devm_request_irq() (which takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding an original error code. Stop calling devm_request_irq() with invalid IRQ #s.
Fixes: b5b5b32081cd ("i2c: mlxbf: I2C SMBus driver for Mellanox BlueField SoC") Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru> Signed-off-by: Wolfram Sang <wsa@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/i2c/busses/i2c-mlxbf.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/i2c/busses/i2c-mlxbf.c b/drivers/i2c/busses/i2c-mlxbf.c index 2fb0532d8a16..ab261d762dea 100644 --- a/drivers/i2c/busses/i2c-mlxbf.c +++ b/drivers/i2c/busses/i2c-mlxbf.c @@ -2376,6 +2376,8 @@ static int mlxbf_i2c_probe(struct platform_device *pdev) mlxbf_i2c_init_slave(pdev, priv); irq = platform_get_irq(pdev, 0); + if (irq < 0) + return irq; ret = devm_request_irq(dev, irq, mlxbf_smbus_irq, IRQF_ONESHOT | IRQF_SHARED | IRQF_PROBE_SHARED, dev_name(dev), priv); -- 2.30.2
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