From 42d97ac6a8384197f5b2745592c55aae3191b0e0 Mon Sep 17 00:00:00 2001 From: Arvind Yadav Date: Tue, 30 May 2017 16:35:27 +0530 Subject: [PATCH] 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: Arvind Yadav Signed-off-by: Jonathan Cameron --- drivers/iio/adc/lpc32xx_adc.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/iio/adc/lpc32xx_adc.c b/drivers/iio/adc/lpc32xx_adc.c index 0de709b4288b..6a5b9a9bc662 100644 --- a/drivers/iio/adc/lpc32xx_adc.c +++ b/drivers/iio/adc/lpc32xx_adc.c @@ -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, -- 2.39.2