From: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Date: Sat, 10 Apr 2021 23:20:49 +0300
Subject: i2c: mlxbf: add IRQ check
Git-commit: 0d3bf53e897dce943b98d975bbde77156af6cd81
Patch-mainline: v5.13-rc1
References: git-fixes
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: Matthias Brugger <mbrugger@suse.com>
---
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 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);
--
2.31.1