This patch avoids to dereference the uninitialized data pointer if the error path is entered before devm_kzalloc is called (or if the allocation fails). It fixes the following warning:
sound/soc/fsl/imx-sgtl5000.c: In function 'imx_sgtl5000_probe': sound/soc/fsl/imx-sgtl5000.c:175:18: warning: 'data' may be used uninitialized in this function [-Wmaybe-uninitialized]
Signed-off-by: Philipp Zabel p.zabel@pengutronix.de --- sound/soc/fsl/imx-sgtl5000.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/sound/soc/fsl/imx-sgtl5000.c b/sound/soc/fsl/imx-sgtl5000.c index c49e4cb..6f4bdc8 100644 --- a/sound/soc/fsl/imx-sgtl5000.c +++ b/sound/soc/fsl/imx-sgtl5000.c @@ -62,7 +62,7 @@ static int imx_sgtl5000_probe(struct platform_device *pdev) struct device_node *ssi_np, *codec_np; struct platform_device *ssi_pdev; struct i2c_client *codec_dev; - struct imx_sgtl5000_data *data; + struct imx_sgtl5000_data *data = NULL; int int_port, ext_port; int ret;
@@ -172,7 +172,7 @@ static int imx_sgtl5000_probe(struct platform_device *pdev) return 0;
fail: - if (!IS_ERR(data->codec_clk)) + if (data && !IS_ERR(data->codec_clk)) clk_put(data->codec_clk); if (ssi_np) of_node_put(ssi_np);