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| author | Sergey Shtylyov <s.shtylyov@omprussia.ru> | 2021-04-10 23:25:10 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-22 10:59:36 +0200 |
| commit | b469f21b20ac7b517d9e52dac7a52ec3e12ef715 (patch) | |
| tree | 78900c4f2751c69e44698989c5f9e4f13db3ee1d /drivers/i2c/busses | |
| parent | 06f09e43374d4a8f9743661c11a27983b0063c34 (diff) | |
| download | linux-stable-b469f21b20ac7b517d9e52dac7a52ec3e12ef715.tar.gz linux-stable-b469f21b20ac7b517d9e52dac7a52ec3e12ef715.tar.bz2 linux-stable-b469f21b20ac7b517d9e52dac7a52ec3e12ef715.zip | |
i2c: sh7760: add IRQ check
[ Upstream commit e5b2e3e742015dd2aa6bc7bcef2cb59b2de1221c ]
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: a26c20b1fa6d ("i2c: Renesas SH7760 I2C master driver")
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>
Diffstat (limited to 'drivers/i2c/busses')
| -rw-r--r-- | drivers/i2c/busses/i2c-sh7760.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-sh7760.c b/drivers/i2c/busses/i2c-sh7760.c index c2005c789d2b..c79c9f542c5a 100644 --- a/drivers/i2c/busses/i2c-sh7760.c +++ b/drivers/i2c/busses/i2c-sh7760.c @@ -471,7 +471,10 @@ static int sh7760_i2c_probe(struct platform_device *pdev) goto out2; } - id->irq = platform_get_irq(pdev, 0); + ret = platform_get_irq(pdev, 0); + if (ret < 0) + return ret; + id->irq = ret; id->adap.nr = pdev->id; id->adap.algo = &sh7760_i2c_algo; |