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Commit 42d97ac6 authored by Arvind Yadav's avatar Arvind Yadav Committed by Jonathan Cameron
Browse files

iio:adc:lpc32xx Handle return value of clk_prepare_enable 



clk_prepare_enable() can fail here and we must check its return value.

Signed-off-by: default avatarArvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent f4f93bf7

drivers/iio/adc/lpc32xx_adc.c

+6 −2
Original line number Diff line number Diff line
@@ -76,10 +76,14 @@ static int lpc32xx_read_raw(struct iio_dev *indio_dev, 
			    long mask)

{

	struct lpc32xx_adc_state *st = iio_priv(indio_dev);



	int ret;

	if (mask == IIO_CHAN_INFO_RAW) {

		mutex_lock(&indio_dev->mlock);

		clk_prepare_enable(st->clk);

		ret = clk_prepare_enable(st->clk);

		if (ret) {

			mutex_unlock(&indio_dev->mlock);

			return ret;

		}

		/* Measurement setup */

		__raw_writel(LPC32XXAD_INTERNAL | (chan->address) |

			     LPC32XXAD_REFp | LPC32XXAD_REFm,