Commit 7fc93f32 authored Dec 27, 2018 by Aditya Pakki Committed by Jonathan Cameron Jan 05, 2019

iio: adc: xilinx: check return value of xadc_write_adc_reg



In function xadc_probe, xadc_write_adc_reg can return an error value
when write fails. The fix checks for the return value consistent with
other invocations of the latter function.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

parent b002bf5f

drivers/iio/adc/xilinx-xadc-core.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -1273,8 +1273,10 @@ static int xadc_probe(struct platform_device *pdev)
		xadc->threshold[i] = 0xffff;
		else
		xadc->threshold[i] = 0;
		xadc_write_adc_reg(xadc, XADC_REG_THRESHOLD(i),
		ret = xadc_write_adc_reg(xadc, XADC_REG_THRESHOLD(i),
		xadc->threshold[i]);
		if (ret)
		goto err_free_irq;
		}

		/* Go to non-buffered mode */