linux-kernel - [PATCH 2/3] ASoC: amd: acp: Fix NULL pointer deref in acp_i2s_set_tdm

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Message-ID: <20250425060144.1773265-2-venkataprasad.potturu@amd.com>
Date: Fri, 25 Apr 2025 11:31:40 +0530
From: Venkata Prasad Potturu <venkataprasad.potturu@....com>
To: <broonie@...nel.org>, <alsa-devel@...a-project.org>
CC: <Vijendar.Mukunda@....com>, <Basavaraj.Hiregoudar@....com>,
	<Sunil-kumar.Dommati@....com>, <syed.sabakareem@....com>,
	<mario.limonciello@....com>, Venkata Prasad Potturu
	<venkataprasad.potturu@....com>, Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>, Bard Liao
	<yung-chuan.liao@...ux.intel.com>, Greg KH <gregkh@...uxfoundation.org>, Jeff
 Johnson <quic_jjohnson@...cinc.com>, Daniel Baluta <daniel.baluta@....com>,
	Peter Zijlstra <peterz@...radead.org>, "open list:SOUND - SOC LAYER / DYNAMIC
 AUDIO POWER MANAGEM..." <linux-sound@...r.kernel.org>, open list
	<linux-kernel@...r.kernel.org>
Subject: [PATCH 2/3] ASoC: amd: acp: Fix NULL pointer deref in acp_i2s_set_tdm_slot

Update chip data using dev_get_drvdata(dev->parent) to fix
NULL pointer deref in acp_i2s_set_tdm_slot.

Fixes: cd60dec8994c ("ASoC: amd: acp: Refactor TDM slots selction based on acp revision id")

Signed-off-by: Venkata Prasad Potturu <venkataprasad.potturu@....com>
---
 sound/soc/amd/acp/acp-i2s.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/amd/acp/acp-i2s.c b/sound/soc/amd/acp/acp-i2s.c
index a38409dd1d34..70fa54d568ef 100644
--- a/sound/soc/amd/acp/acp-i2s.c
+++ b/sound/soc/amd/acp/acp-i2s.c
@@ -97,7 +97,7 @@ static int acp_i2s_set_tdm_slot(struct snd_soc_dai *dai, u32 tx_mask, u32 rx_mas
 	struct acp_stream *stream;
 	int slot_len, no_of_slots;
 
-	chip = dev_get_platdata(dev);
+	chip = dev_get_drvdata(dev->parent);
 	switch (slot_width) {
 	case SLOT_WIDTH_8:
 		slot_len = 8;
-- 
2.43.0