spi: fsl-dspi: Fix memory leak

The memory allocated for chip is not freed anywhere.
Convert to use devm_kzalloc to fix the memory leak.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c
index 7f0dddb..c5ecfc1 100644 (file)
--- a/drivers/spi/spi-fsl-dspi.c
+++ b/drivers/spi/spi-fsl-dspi.c
@@ -342,7 +342,8 @@ static int dspi_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
        /* Only alloc on first setup */
        chip = spi_get_ctldata(spi);
        if (chip == NULL) {
-               chip = kcalloc(1, sizeof(struct chip_data), GFP_KERNEL);
+               chip = devm_kzalloc(&spi->dev, sizeof(struct chip_data),
+                                   GFP_KERNEL);
                if (!chip)
                        return -ENOMEM;
        }
@@ -353,7 +354,6 @@ static int dspi_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
                fmsz = spi->bits_per_word - 1;
        } else {
                pr_err("Invalid wordsize\n");
-               kfree(chip);
                return -ENODEV;
        }