linux-kernel - [PATCH 3.15 43/61] iio: adc: checking for NULL instead of IS

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Message-Id: <20140624154954.742618212@linuxfoundation.org>
Date:	Tue, 24 Jun 2014 11:51:26 -0400
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
	Jonathan Cameron <jic23@...nel.org>
Subject: [PATCH 3.15 43/61] iio: adc: checking for NULL instead of IS_ERR() in probe

3.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpenter@...cle.com>

commit e94f62e79f7f63a68574ee5e76c19837ec12f3db upstream.

mcb_request_mem() returns an ERR_PTR(), it doesn't return NULL.

Fixes: 74aeac4da66f ('iio: adc: Add MEN 16z188 ADC driver')
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Jonathan Cameron <jic23@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/iio/adc/men_z188_adc.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/iio/adc/men_z188_adc.c
+++ b/drivers/iio/adc/men_z188_adc.c
@@ -121,8 +121,8 @@ static int men_z188_probe(struct mcb_dev
 	indio_dev->num_channels = ARRAY_SIZE(z188_adc_iio_channels);
 
 	mem = mcb_request_mem(dev, "z188-adc");
-	if (!mem)
-		return -ENOMEM;
+	if (IS_ERR(mem))
+		return PTR_ERR(mem);
 
 	adc->base = ioremap(mem->start, resource_size(mem));
 	if (adc->base == NULL)


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