Messages in this thread Patch in this message | | | From | Arvind Yadav <> | Subject | [PATCH] iio: Aspeed ADC - Handle return value of clk_prepare_enable | Date | Mon, 29 May 2017 13:12:12 +0530 |
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clk_prepare_enable() can fail here and we must check its return value.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> --- drivers/iio/adc/aspeed_adc.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/adc/aspeed_adc.c b/drivers/iio/adc/aspeed_adc.c index 62670cb..e0ea411 100644 --- a/drivers/iio/adc/aspeed_adc.c +++ b/drivers/iio/adc/aspeed_adc.c @@ -212,7 +212,10 @@ static int aspeed_adc_probe(struct platform_device *pdev) } /* Start all channels in normal mode. */ - clk_prepare_enable(data->clk_scaler->clk); + ret = clk_prepare_enable(data->clk_scaler->clk); + if (ret) + goto clk_enable_error; + adc_engine_control_reg_val = GENMASK(31, 16) | ASPEED_OPERATION_MODE_NORMAL | ASPEED_ENGINE_ENABLE; writel(adc_engine_control_reg_val, @@ -236,6 +239,7 @@ static int aspeed_adc_probe(struct platform_device *pdev) writel(ASPEED_OPERATION_MODE_POWER_DOWN, data->base + ASPEED_REG_ENGINE_CONTROL); clk_disable_unprepare(data->clk_scaler->clk); +clk_enable_error: clk_hw_unregister_divider(data->clk_scaler); scaler_error: -- 1.9.1
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