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ASoC: rockchip: dlp: Add NULL pointer check for substream in substream_to_drd

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Hardware name: Rockchip RK3576 V10 Board (DT)
pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : dlp_start+0x5c/0x284
lr : dmaengine_mpcm_trigger+0x404/0x40c
sp : ffffffc00dfd3a60
x29: ffffffc00dfd3a90 x28: 0000000000000000 x27: 0000000000000004
x26: 0000000000000002 x25: ffffff80200a16c0 x24: 0000000000000000
x23: ffffff80c1986588 x22: ffffff80d2a4e800 x21: ffffffc00905f1a0
x20: ffffff80c24cc410 x19: ffffff80c2df9bc0 x18: ffffffc00c8dd088
x17: 0000000000000001 x16: 0000000000000000 x15: 0000000000000000
x14: 0000000000000000 x13: ffffffc00aa98d08 x12: 0000000000000000
x11: ffffffc00aa98d0c x10: 00000000000003c8 x9 : ffffff80940593c8
x8 : ffffff80f9f96000 x7 : 0000000000000000 x6 : 0000000000000002
x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffffffc00905f1a0
x2 : ffffff80c24cc410 x1 : ffffff80d2a4e800 x0 : ffffff80c2df9bc0
Call trace:
 dlp_start+0x5c/0x284
 dmaengine_mpcm_trigger+0x404/0x40c
 snd_soc_pcm_component_trigger+0x8c/0x1c8
 soc_pcm_trigger+0x70/0x198
 snd_pcm_do_start+0x34/0x40
 snd_pcm_action+0x90/0x148
 snd_pcm_start+0x20/0x2c
 __snd_pcm_lib_xfer+0x664/0x750
 snd_pcm_xferi_frames_ioctl+0x1ec/0x3b4
 snd_pcm_common_ioctl+0x384/0x608
 snd_pcm_ioctl+0x30/0x48
 __arm64_sys_ioctl+0x90/0xc8
 invoke_syscall+0x40/0x104
 el0_svc_common+0xbc/0x168
 do_el0_svc+0x1c/0x28
 el0_svc+0x1c/0x68
 el0t_64_sync_handler+0x68/0xb4
 el0t_64_sync+0x164/0x168

Signed-off-by: Shunhua Lan <lsh@rock-chips.com>
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Change-Id: Iff8c5c79bb42901a7fa50a49e2328a545c2a9b3c
This commit is contained in:
Shunhua Lan
2024-03-02 15:02:18 +08:00
committed by Tao Huang
parent 0f50cd7d75
commit 93ebae336c
1 changed files with 1 additions and 1 deletions
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2
sound/soc/rockchip/rockchip_dlp.h
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@@ -81,7 +81,7 @@ static inline struct dlp *soc_component_to_dlp(struct snd_soc_component *p)
static inline struct dlp_runtime_data *substream_to_drd(
const struct snd_pcm_substream *substream)
{
if (!substream->runtime)
if (!substream || !substream->runtime)
return NULL;
return substream->runtime->private_data;