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authorArvind Yadav <arvind.yadav.cs@gmail.com>2017-05-30 16:35:27 +0530
committerJonathan Cameron <jic23@kernel.org>2017-06-03 09:55:25 +0100
commit42d97ac6a8384197f5b2745592c55aae3191b0e0 (patch)
tree2ba2820fb544948c2f023cb99767a63d72fb76a0 /drivers/iio
parentf4f93bf77dc14e99b2bd383bd67e30294e732372 (diff)
downloadlinux-42d97ac6a8384197f5b2745592c55aae3191b0e0.tar.bz2
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 <arvind.yadav.cs@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio')
-rw-r--r--drivers/iio/adc/lpc32xx_adc.c8
1 files 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,