[PATCH v8 06/12] media: mediatek: jpeg: fix decoding buffer number setting timing issue
From: Kyrie Wu <hidden>
Date: 2025-08-11 02:26:11
Also in:
linux-devicetree, linux-media, linux-mediatek, lkml
Subsystem:
media input infrastructure (v4l/dvb), mediatek jpeg driver, the rest · Maintainers:
Mauro Carvalho Chehab, Bin Liu, Linus Torvalds
move decoding buffer increase code into spinlock
protecting aera for multi-core
Fixes: dedc21500334 ("media: mtk-jpegdec: add jpeg decode worker interface")
Signed-off-by: Kyrie Wu <redacted>
---
drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c | 9 +++------
drivers/media/platform/mediatek/jpeg/mtk_jpeg_dec_hw.c | 1 +
drivers/media/platform/mediatek/jpeg/mtk_jpeg_enc_hw.c | 1 +
3 files changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
index 32b20d97a5e8..3fc344d05528 100644
--- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
+++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c@@ -1747,7 +1747,6 @@ static void mtk_jpegdec_worker(struct work_struct *work) v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, true); jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(&src_buf->vb2_buf); - jpeg_dst_buf = mtk_jpeg_vb2_to_srcbuf(&dst_buf->vb2_buf); if (mtk_jpeg_check_resolution_change(ctx, &jpeg_src_buf->dec_param)) {
@@ -1756,11 +1755,6 @@ static void mtk_jpegdec_worker(struct work_struct *work) goto getbuf_fail; } - jpeg_src_buf->curr_ctx = ctx; - jpeg_src_buf->frame_num = ctx->total_frame_num; - jpeg_dst_buf->curr_ctx = ctx; - jpeg_dst_buf->frame_num = ctx->total_frame_num; - mtk_jpegdec_set_hw_param(ctx, hw_id, src_buf, dst_buf); ret = pm_runtime_resume_and_get(comp_jpeg[hw_id]->dev); if (ret < 0) {
@@ -1785,6 +1779,9 @@ static void mtk_jpegdec_worker(struct work_struct *work) msecs_to_jiffies(MTK_JPEG_HW_TIMEOUT_MSEC)); spin_lock_irqsave(&comp_jpeg[hw_id]->hw_lock, flags); + jpeg_dst_buf = mtk_jpeg_vb2_to_srcbuf(&dst_buf->vb2_buf); + jpeg_dst_buf->curr_ctx = ctx; + jpeg_dst_buf->frame_num = ctx->total_frame_num; ctx->total_frame_num++; mtk_jpeg_dec_reset(comp_jpeg[hw_id]->reg_base); mtk_jpeg_dec_set_config(comp_jpeg[hw_id]->reg_base,
diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_dec_hw.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_dec_hw.c
index 5f1557dafad6..b3142dc9be85 100644
--- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_dec_hw.c
+++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_dec_hw.c@@ -513,6 +513,7 @@ static void mtk_jpegdec_put_buf(struct mtk_jpegdec_comp_dev *jpeg) v4l2_m2m_buf_done(&tmp_dst_done_buf->b, VB2_BUF_STATE_DONE); ctx->last_done_frame_num++; + break; } } }
diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_enc_hw.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_enc_hw.c
index 5fe709d4003a..ad6ee6ac6661 100644
--- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_enc_hw.c
+++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_enc_hw.c@@ -242,6 +242,7 @@ static void mtk_jpegenc_put_buf(struct mtk_jpegenc_comp_dev *jpeg) v4l2_m2m_buf_done(&tmp_dst_done_buf->b, VB2_BUF_STATE_DONE); ctx->last_done_frame_num++; + break; } } }
--
2.46.0