diff options
| author | Sergey Shtylyov <s.shtylyov@omprussia.ru> | 2021-04-10 23:20:49 +0300 |
|---|---|---|
| committer | Wolfram Sang <wsa@kernel.org> | 2021-04-14 11:20:45 +0300 |
| commit | 0d3bf53e897dce943b98d975bbde77156af6cd81 (patch) | |
| tree | f8442ac4790c6b553128c6d26f0500a09e701fa9 /drivers/i2c | |
| parent | c5e5f7a8d931fb4beba245bdbc94734175fda9de (diff) | |
| download | linux-0d3bf53e897dce943b98d975bbde77156af6cd81.tar.xz | |
i2c: mlxbf: add IRQ check
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>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-mlxbf.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-mlxbf.c b/drivers/i2c/busses/i2c-mlxbf.c index 80ab831df349..8716032f030a 100644 --- a/drivers/i2c/busses/i2c-mlxbf.c +++ b/drivers/i2c/busses/i2c-mlxbf.c @@ -2370,6 +2370,8 @@ 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); |