From: Linus Walleij <linus.walleij@linaro.org>
To: Jonathan Cameron <jic23@kernel.org>, linux-iio@vger.kernel.org
Cc: Linus Walleij <linus.walleij@linaro.org>,
Dan Carpenter <dan.carpenter@oracle.com>
Subject: [PATCH] iio: light: bh1780: return after write
Date: Thu, 28 Apr 2016 14:02:41 +0200 [thread overview]
Message-ID: <1461844961-28558-1-git-send-email-linus.walleij@linaro.org> (raw)
When writing a value using direct reg access from debugfs
we need to return and not fall through to reading the
value, lest we'll dereference a NULL pointer.
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/iio/light/bh1780.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/light/bh1780.c b/drivers/iio/light/bh1780.c
index 72b364e4aa72..f83595334ff1 100644
--- a/drivers/iio/light/bh1780.c
+++ b/drivers/iio/light/bh1780.c
@@ -84,7 +84,7 @@ static int bh1780_debugfs_reg_access(struct iio_dev *indio_dev,
int ret;
if (!readval)
- bh1780_write(bh1780, (u8)reg, (u8)writeval);
+ return bh1780_write(bh1780, (u8)reg, (u8)writeval);
ret = bh1780_read(bh1780, (u8)reg);
if (ret < 0)
--
2.4.11
next reply other threads:[~2016-04-28 12:02 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-28 12:02 Linus Walleij [this message]
2016-05-01 19:42 ` [PATCH] iio: light: bh1780: return after write Jonathan Cameron
2016-05-04 9:54 ` Jonathan Cameron
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