From a96de139301385e5992768c0f60240ddfbb33325 Mon Sep 17 00:00:00 2001
From: Chuhong Yuan <hslester96@gmail.com>
Date: Wed, 16 Oct 2019 22:25:40 +0800
Subject: [PATCH] staging: iio: ad9834: add a check for devm_clk_get
Git-commit: a96de139301385e5992768c0f60240ddfbb33325
Patch-mainline: v5.5-rc1
References: git-fixes
ad9834_probe misses a check for devm_clk_get and may cause problems.
Add a check like what ad9832 does to fix it.
Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/staging/iio/frequency/ad9834.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/staging/iio/frequency/ad9834.c b/drivers/staging/iio/frequency/ad9834.c
index 038d6732c3fd..23026978a5a5 100644
--- a/drivers/staging/iio/frequency/ad9834.c
+++ b/drivers/staging/iio/frequency/ad9834.c
@@ -417,6 +417,10 @@ static int ad9834_probe(struct spi_device *spi)
st = iio_priv(indio_dev);
mutex_init(&st->lock);
st->mclk = devm_clk_get(&spi->dev, NULL);
+ if (IS_ERR(st->mclk)) {
+ ret = PTR_ERR(st->mclk);
+ goto error_disable_reg;
+ }
ret = clk_prepare_enable(st->mclk);
if (ret) {
--
2.16.4