[PATCH] ASoC: SOF: imx-common: set sdev->pdata->hw_pdata after common is alloc'd

[Laurentiu Mihalcea <laurentiumihalcea111@xxxxxxxxx>]

From: Laurentiu Mihalcea <laurentiu.mihalcea@xxxxxxx>

'imx_unregister_action' uses 'sdev->pdata->hw_pdata' to fetch the pointer
to the common data structure. As such, if 'sdev->pdata->hw_pdata' is not
set before adding 'imx_unregister_action' to the devres list, we risk
derefrencing a NULL pointer if any of the calls between
'devm_add_action_or_reset' and 'sdev->pdata->hw_pdata = common' fails.

Set 'sdev->pdata->hw_pdata' to point to 'common' as soon as 'common' is
allocated.

Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@xxxxxxx>
---
 sound/soc/sof/imx/imx-common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/sof/imx/imx-common.c b/sound/soc/sof/imx/imx-common.c
index 82057af1436c..c3594815e60e 100644
--- a/sound/soc/sof/imx/imx-common.c
+++ b/sound/soc/sof/imx/imx-common.c
@@ -378,6 +378,7 @@ static int imx_probe(struct snd_sof_dev *sdev)
 	if (!common)
 		return dev_err_probe(sdev->dev, -ENOMEM,
 				     "failed to allocate common data\n");
+	sdev->pdata->hw_pdata = common;
 
 	common->ipc_dev = platform_device_register_data(sdev->dev, "imx-dsp",
 							PLATFORM_DEVID_NONE,
@@ -436,7 +437,6 @@ static int imx_probe(struct snd_sof_dev *sdev)
 	imx_dsp_set_data(common->ipc_handle, sdev);
 
 	sdev->num_cores = 1;
-	sdev->pdata->hw_pdata = common;
 	sdev->mailbox_bar = SOF_FW_BLK_TYPE_SRAM;
 	sdev->dsp_box.offset = get_chip_info(sdev)->ipc_info.boot_mbox_offset;
 
-- 
2.34.1