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| author | Jackson Lee <jackson.lee@chipsnmedia.com> | 2026-06-26 10:22:29 +0900 |
|---|---|---|
| committer | Hans Verkuil <hverkuil+cisco@kernel.org> | 2026-07-17 12:36:48 +0200 |
| commit | 2ae7faed2e60d6d07d9efdd962d20dcb15330ced (patch) | |
| tree | f715414905c31243168d4aba9a9b68a4500072b3 /drivers | |
| parent | 8c5a74a24cbbba9142e38c463c96435d316149ce (diff) | |
| download | linux-next-2ae7faed2e60d6d07d9efdd962d20dcb15330ced.tar.gz linux-next-2ae7faed2e60d6d07d9efdd962d20dcb15330ced.zip | |
media: chips-media: wave5: Add timeout while stop_streaming
When stop_streaming is called, an infinite loop may occur in some cases.
Add a bounded poll of the queue status: loop until the queues drain,
sleeping briefly between polls, and bail out once VPU_DEC_STOP_TIMEOUT
elapses.
Fixes: 9707a6254a8a ("media: chips-media: wave5: Add the v4l2 layer")
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>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c | 15 | ||||
| -rw-r--r-- | drivers/media/platform/chips-media/wave5/wave5-vpuconfig.h | 2 |
2 files changed, 10 insertions, 7 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 6c6e86b09b40..93f7b724d86c 100644 --- a/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c +++ b/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c @@ -5,6 +5,7 @@ * Copyright (C) 2021-2023 CHIPS&MEDIA INC */ +#include <linux/delay.h> #include <linux/pm_runtime.h> #include "wave5-helper.h" @@ -1537,15 +1538,15 @@ static void wave5_vpu_dec_stop_streaming(struct vb2_queue *q) { struct vpu_instance *inst = vb2_get_drv_priv(q); struct v4l2_m2m_ctx *m2m_ctx = inst->v4l2_fh.m2m_ctx; - - bool check_cmd = TRUE; + unsigned long timeout; dev_dbg(inst->dev->dev, "%s: type: %u\n", __func__, q->type); pm_runtime_resume_and_get(inst->dev->dev); inst->empty_queue = true; - while (check_cmd) { + + timeout = jiffies + msecs_to_jiffies(VPU_DEC_STOP_TIMEOUT); + while (true) { struct queue_status_info q_status; - struct dec_output_info dec_output_info; wave5_vpu_dec_give_command(inst, DEC_GET_QUEUE_STATUS, &q_status); if ((inst->state == VPU_INST_STATE_STOP || @@ -1554,8 +1555,10 @@ static void wave5_vpu_dec_stop_streaming(struct vb2_queue *q) q_status.report_queue_count == 0) break; - if (wave5_vpu_dec_get_output_info(inst, &dec_output_info)) - dev_dbg(inst->dev->dev, "there is no output info\n"); + if (time_after(jiffies, timeout)) + break; + + usleep_range(1000, 2000); } v4l2_m2m_update_stop_streaming_state(m2m_ctx, q); diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpuconfig.h b/drivers/media/platform/chips-media/wave5/wave5-vpuconfig.h index 4ebd48d5550e..e04f2dbf3b65 100644 --- a/drivers/media/platform/chips-media/wave5/wave5-vpuconfig.h +++ b/drivers/media/platform/chips-media/wave5/wave5-vpuconfig.h @@ -59,7 +59,7 @@ // application specific configuration #define VPU_ENC_TIMEOUT 60000 #define VPU_DEC_TIMEOUT 60000 -#define VPU_DEC_STOP_TIMEOUT 10 +#define VPU_DEC_STOP_TIMEOUT 300 // for WAVE encoder #define USE_SRC_PRP_AXI 0 |