linux-kernel - [PATCH 2/5] iio: adc: xilinx: use devm_krealloc() instead of kfree() + kcalloc()

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Date:   Mon, 26 Oct 2020 14:36:06 +0100
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Michal Simek <michal.simek@...inx.com>
Cc:     linux-iio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: [PATCH 2/5] iio: adc: xilinx: use devm_krealloc() instead of kfree() + kcalloc()

From: Bartosz Golaszewski <bgolaszewski@...libre.com>

We now have devm_krealloc() in the kernel Use it indstead of calling
kfree() and kcalloc() separately.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
---
 drivers/iio/adc/xilinx-xadc-core.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/adc/xilinx-xadc-core.c b/drivers/iio/adc/xilinx-xadc-core.c
index 8494eb424b33..b516280ccbd4 100644
--- a/drivers/iio/adc/xilinx-xadc-core.c
+++ b/drivers/iio/adc/xilinx-xadc-core.c
@@ -589,8 +589,9 @@ static int xadc_update_scan_mode(struct iio_dev *indio_dev,
 
 	n = bitmap_weight(mask, indio_dev->masklength);
 
-	kfree(xadc->data);
-	xadc->data = kcalloc(n, sizeof(*xadc->data), GFP_KERNEL);
+	xadc->data = devm_krealloc(indio_dev->dev.parent, xadc->data,
+				   n * sizeof(*xadc->data),
+				   GFP_KERNEL | __GFP_ZERO);
 	if (!xadc->data)
 		return -ENOMEM;
 
@@ -1372,7 +1373,6 @@ static int xadc_remove(struct platform_device *pdev)
 	free_irq(xadc->irq, indio_dev);
 	cancel_delayed_work_sync(&xadc->zynq_unmask_work);
 	clk_disable_unprepare(xadc->clk);
-	kfree(xadc->data);
 
 	return 0;
 }
-- 
2.29.1