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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2021-04-15 10:33:22 +1200 |
|---|---|---|
| committer | Wolfram Sang <wsa@kernel.org> | 2021-04-15 22:08:17 +0200 |
| commit | c9598d04e738e289a2d95721b2f8c63ba0d977d2 (patch) | |
| tree | 983ecabae644981ee9ce8907feb8f642a3c637d6 /drivers/i2c | |
| parent | 97b4dff130f5451bcfb7e677f16366c205b51d0f (diff) | |
| download | linux-c9598d04e738e289a2d95721b2f8c63ba0d977d2.tar.gz linux-c9598d04e738e289a2d95721b2f8c63ba0d977d2.tar.bz2 linux-c9598d04e738e289a2d95721b2f8c63ba0d977d2.zip | |
i2c: mpc: Use devm_clk_get_optional()
The peripheral clock is optional and we may get an -EPROBE_DEFER error code
which would not be propagated correctly, fix this by using
devm_clk_get_optional().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-mpc.c | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c index 37244138875a..d2209c04f67a 100644 --- a/drivers/i2c/busses/i2c-mpc.c +++ b/drivers/i2c/busses/i2c-mpc.c @@ -737,17 +737,18 @@ static int fsl_i2c_probe(struct platform_device *op) * enable clock for the I2C peripheral (non fatal), * keep a reference upon successful allocation */ - clk = devm_clk_get(&op->dev, NULL); - if (!IS_ERR(clk)) { - err = clk_prepare_enable(clk); - if (err) { - dev_err(&op->dev, "failed to enable clock\n"); - return err; - } else { - i2c->clk_per = clk; - } + clk = devm_clk_get_optional(&op->dev, NULL); + if (IS_ERR(clk)) + return PTR_ERR(clk); + + err = clk_prepare_enable(clk); + if (err) { + dev_err(&op->dev, "failed to enable clock\n"); + return err; } + i2c->clk_per = clk; + if (of_property_read_bool(op->dev.of_node, "fsl,preserve-clocking")) { clock = MPC_I2C_CLOCK_PRESERVE; } else { @@ -791,8 +792,7 @@ static int fsl_i2c_probe(struct platform_device *op) return 0; fail_add: - if (i2c->clk_per) - clk_disable_unprepare(i2c->clk_per); + clk_disable_unprepare(i2c->clk_per); return result; }; @@ -803,8 +803,7 @@ static int fsl_i2c_remove(struct platform_device *op) i2c_del_adapter(&i2c->adap); - if (i2c->clk_per) - clk_disable_unprepare(i2c->clk_per); + clk_disable_unprepare(i2c->clk_per); return 0; }; |