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| author | Alexey Khoroshilov <khoroshilov@ispras.ru> | 2016-09-23 11:15:26 +0200 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2016-09-24 11:26:55 +0200 |
| commit | 662786a5429c3a992c6f884a647ee32424822358 (patch) | |
| tree | 2dfa5db7684e2d7b824fbb18bb83cdb1aaa5f08c /drivers/i2c/busses/i2c-axxia.c | |
| parent | i2c: octeon: thunderx: Limit register access retries (diff) | |
| download | linux-662786a5429c3a992c6f884a647ee32424822358.tar.xz linux-662786a5429c3a992c6f884a647ee32424822358.zip | |
i2c: axxia: disable clks in case of failure in probe
axxia_i2c_probe() does not disable clock in case of failure
in i2c_add_adapter(). Also it ignores returned value from
clk_prepare_enable().
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/busses/i2c-axxia.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-axxia.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/i2c/busses/i2c-axxia.c b/drivers/i2c/busses/i2c-axxia.c index d3bcaf4ab095..4351a9343058 100644 --- a/drivers/i2c/busses/i2c-axxia.c +++ b/drivers/i2c/busses/i2c-axxia.c @@ -545,7 +545,11 @@ static int axxia_i2c_probe(struct platform_device *pdev) return ret; } - clk_prepare_enable(idev->i2c_clk); + ret = clk_prepare_enable(idev->i2c_clk); + if (ret) { + dev_err(&pdev->dev, "failed to enable clock\n"); + return ret; + } i2c_set_adapdata(&idev->adapter, idev); strlcpy(idev->adapter.name, pdev->name, sizeof(idev->adapter.name)); @@ -558,7 +562,13 @@ static int axxia_i2c_probe(struct platform_device *pdev) platform_set_drvdata(pdev, idev); - return i2c_add_adapter(&idev->adapter); + ret = i2c_add_adapter(&idev->adapter); + if (ret) { + clk_disable_unprepare(idev->i2c_clk); + return ret; + } + + return 0; } static int axxia_i2c_remove(struct platform_device *pdev) |