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From: Jackson Lee <jackson.lee@chipsnmedia.com>

[ Upstream commit cbb9c0d50e471483cced55f5b7db4569dcd959a6 ]

SError of kernel panic rarely happened while testing fluster.
The root cause was to enter suspend mode because timeout of autosuspend
delay happened.

[   48.834439] SError Interrupt on CPU0, code 0x00000000bf000000 -- SError
[   48.834455] CPU: 0 UID: 0 PID: 1067 Comm: v4l2h265dec0:sr Not tainted 6.12.9-gc9e21a1ebd75-dirty #7
[   48.834461] Hardware name: ti Texas Instruments J721S2 EVM/Texas Instruments J721S2 EVM, BIOS 2025.01-00345-gbaf3aaa8ecfa 01/01/2025
[   48.834464] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[   48.834468] pc : wave5_dec_clr_disp_flag+0x40/0x80 [wave5]
[   48.834488] lr : wave5_dec_clr_disp_flag+0x40/0x80 [wave5]
[   48.834495] sp : ffff8000856e3a30
[   48.834497] x29: ffff8000856e3a30 x28: ffff0008093f6010 x27: ffff000809158130
[   48.834504] x26: 0000000000000000 x25: ffff00080b625000 x24: ffff000804a9ba80
[   48.834509] x23: ffff000802343028 x22: ffff000809158150 x21: ffff000802218000
[   48.834513] x20: ffff0008093f6000 x19: ffff0008093f6000 x18: 0000000000000000
[   48.834518] x17: 0000000000000000 x16: 0000000000000000 x15: 0000ffff74009618
[   48.834523] x14: 000000010000000c x13: 0000000000000000 x12: 0000000000000000
[   48.834527] x11: ffffffffffffffff x10: ffffffffffffffff x9 : ffff000802343028
[   48.834532] x8 : ffff00080b6252a0 x7 : 0000000000000038 x6 : 0000000000000000
[   48.834536] x5 : ffff00080b625060 x4 : 0000000000000000 x3 : 0000000000000000
[   48.834541] x2 : 0000000000000000 x1 : ffff800084bf0118 x0 : ffff800084bf0000
[   48.834547] Kernel panic - not syncing: Asynchronous SError Interrupt
[   48.834549] CPU: 0 UID: 0 PID: 1067 Comm: v4l2h265dec0:sr Not tainted 6.12.9-gc9e21a1ebd75-dirty #7
[   48.834554] Hardware name: ti Texas Instruments J721S2 EVM/Texas Instruments J721S2 EVM, BIOS 2025.01-00345-gbaf3aaa8ecfa 01/01/2025
[   48.834556] Call trace:
[   48.834559]  dump_backtrace+0x94/0xec
[   48.834574]  show_stack+0x18/0x24
[   48.834579]  dump_stack_lvl+0x38/0x90
[   48.834585]  dump_stack+0x18/0x24
[   48.834588]  panic+0x35c/0x3e0
[   48.834592]  nmi_panic+0x40/0x8c
[   48.834595]  arm64_serror_panic+0x64/0x70
[   48.834598]  do_serror+0x3c/0x78
[   48.834601]  el1h_64_error_handler+0x34/0x4c
[   48.834605]  el1h_64_error+0x64/0x68
[   48.834608]  wave5_dec_clr_disp_flag+0x40/0x80 [wave5]
[   48.834615]  wave5_vpu_dec_clr_disp_flag+0x54/0x80 [wave5]
[   48.834622]  wave5_vpu_dec_buf_queue+0x19c/0x1a0 [wave5]
[   48.834628]  __enqueue_in_driver+0x3c/0x74 [videobuf2_common]
[   48.834639]  vb2_core_qbuf+0x508/0x61c [videobuf2_common]
[   48.834646]  vb2_qbuf+0xa4/0x168 [videobuf2_v4l2]
[   48.834656]  v4l2_m2m_qbuf+0x80/0x238 [v4l2_mem2mem]
[   48.834666]  v4l2_m2m_ioctl_qbuf+0x18/0x24 [v4l2_mem2mem]
[   48.834673]  v4l_qbuf+0x48/0x5c [videodev]
[   48.834704]  __video_do_ioctl+0x180/0x3f0 [videodev]
[   48.834725]  video_usercopy+0x2ec/0x68c [videodev]
[   48.834745]  video_ioctl2+0x18/0x24 [videodev]
[   48.834766]  v4l2_ioctl+0x40/0x60 [videodev]
[   48.834786]  __arm64_sys_ioctl+0xa8/0xec
[   48.834793]  invoke_syscall+0x44/0x100
[   48.834800]  el0_svc_common.constprop.0+0xc0/0xe0
[   48.834804]  do_el0_svc+0x1c/0x28
[   48.834809]  el0_svc+0x30/0xd0
[   48.834813]  el0t_64_sync_handler+0xc0/0xc4
[   48.834816]  el0t_64_sync+0x190/0x194
[   48.834820] SMP: stopping secondary CPUs
[   48.834831] Kernel Offset: disabled
[   48.834833] CPU features: 0x08,00002002,80200000,4200421b
[   48.834837] Memory Limit: none
[   49.161404] ---[ end Kernel panic - not syncing: Asynchronous SError Interrupt ]---

Fixes: 2092b3833487 ("media: chips-media: wave5: Support runtime suspend/resume")
Cc: stable@vger.kernel.org
Signed-off-by: Jackson Lee <jackson.lee@chipsnmedia.com>
Signed-off-by: Nas Chung <nas.chung@chipsnmedia.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Tested-by: Brandon Brnich <b-brnich@ti.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 .../platform/chips-media/wave5/wave5-vpu-dec.c    |  5 ++---
 .../platform/chips-media/wave5/wave5-vpu-enc.c    |  3 ---
 .../media/platform/chips-media/wave5/wave5-vpu.c  |  2 +-
 .../platform/chips-media/wave5/wave5-vpuapi.c     | 15 ---------------
 4 files changed, 3 insertions(+), 22 deletions(-)

diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c b/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c
index a4387ed58cac3..a90f00f589e04 100644
--- a/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c
+++ b/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c
@@ -1243,6 +1243,7 @@ static void wave5_vpu_dec_buf_queue_dst(struct vb2_buffer *vb)
 	struct vpu_instance *inst = vb2_get_drv_priv(vb->vb2_queue);
 	struct v4l2_m2m_ctx *m2m_ctx = inst->v4l2_fh.m2m_ctx;
 
+	pm_runtime_resume_and_get(inst->dev->dev);
 	vbuf->sequence = inst->queued_dst_buf_num++;
 
 	if (inst->state == VPU_INST_STATE_PIC_RUN) {
@@ -1275,6 +1276,7 @@ static void wave5_vpu_dec_buf_queue_dst(struct vb2_buffer *vb)
 	} else {
 		v4l2_m2m_buf_queue(m2m_ctx, vbuf);
 	}
+	pm_runtime_put_autosuspend(inst->dev->dev);
 }
 
 static void wave5_vpu_dec_buf_queue(struct vb2_buffer *vb)
@@ -1827,9 +1829,6 @@ static int wave5_vpu_open_dec(struct file *filp)
 	if (ret)
 		goto cleanup_inst;
 
-	if (list_empty(&dev->instances))
-		pm_runtime_use_autosuspend(inst->dev->dev);
-
 	list_add_tail(&inst->list, &dev->instances);
 
 	mutex_unlock(&dev->dev_lock);
diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c b/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
index a254830e4009e..5388efa63f73d 100644
--- a/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
+++ b/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
@@ -1773,9 +1773,6 @@ static int wave5_vpu_open_enc(struct file *filp)
 	if (ret)
 		goto cleanup_inst;
 
-	if (list_empty(&dev->instances))
-		pm_runtime_use_autosuspend(inst->dev->dev);
-
 	list_add_tail(&inst->list, &dev->instances);
 
 	mutex_unlock(&dev->dev_lock);
diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpu.c b/drivers/media/platform/chips-media/wave5/wave5-vpu.c
index 77d6c934d0b9d..0026f58403620 100644
--- a/drivers/media/platform/chips-media/wave5/wave5-vpu.c
+++ b/drivers/media/platform/chips-media/wave5/wave5-vpu.c
@@ -322,7 +322,7 @@ static int wave5_vpu_probe(struct platform_device *pdev)
 	dev_info(&pdev->dev, "Product Code:      0x%x\n", dev->product_code);
 	dev_info(&pdev->dev, "Firmware Revision: %u\n", fw_revision);
 
-	pm_runtime_set_autosuspend_delay(&pdev->dev, 100);
+	pm_runtime_set_autosuspend_delay(&pdev->dev, 500);
 	pm_runtime_use_autosuspend(&pdev->dev);
 	pm_runtime_enable(&pdev->dev);
 	wave5_vpu_sleep_wake(&pdev->dev, true, NULL, 0);
diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpuapi.c b/drivers/media/platform/chips-media/wave5/wave5-vpuapi.c
index e5e879a13e8b8..e94d6ebc9f816 100644
--- a/drivers/media/platform/chips-media/wave5/wave5-vpuapi.c
+++ b/drivers/media/platform/chips-media/wave5/wave5-vpuapi.c
@@ -207,8 +207,6 @@ int wave5_vpu_dec_close(struct vpu_instance *inst, u32 *fail_res)
 	int retry = 0;
 	struct vpu_device *vpu_dev = inst->dev;
 	int i;
-	int inst_count = 0;
-	struct vpu_instance *inst_elm;
 
 	*fail_res = 0;
 	if (!inst->codec_info)
@@ -250,11 +248,6 @@ int wave5_vpu_dec_close(struct vpu_instance *inst, u32 *fail_res)
 
 	wave5_vdi_free_dma_memory(vpu_dev, &p_dec_info->vb_task);
 
-	list_for_each_entry(inst_elm, &vpu_dev->instances, list)
-		inst_count++;
-	if (inst_count == 1)
-		pm_runtime_dont_use_autosuspend(vpu_dev->dev);
-
 unlock_and_return:
 	mutex_unlock(&vpu_dev->hw_lock);
 	pm_runtime_put_sync(inst->dev->dev);
@@ -720,8 +713,6 @@ int wave5_vpu_enc_close(struct vpu_instance *inst, u32 *fail_res)
 	int ret;
 	int retry = 0;
 	struct vpu_device *vpu_dev = inst->dev;
-	int inst_count = 0;
-	struct vpu_instance *inst_elm;
 
 	*fail_res = 0;
 	if (!inst->codec_info)
@@ -764,12 +755,6 @@ int wave5_vpu_enc_close(struct vpu_instance *inst, u32 *fail_res)
 	}
 
 	wave5_vdi_free_dma_memory(vpu_dev, &p_enc_info->vb_task);
-
-	list_for_each_entry(inst_elm, &vpu_dev->instances, list)
-		inst_count++;
-	if (inst_count == 1)
-		pm_runtime_dont_use_autosuspend(vpu_dev->dev);
-
 	mutex_unlock(&vpu_dev->hw_lock);
 	pm_runtime_put_sync(inst->dev->dev);
 
-- 
2.51.0



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