[PATCH v14 07/12] media: mediatek: jpeg: fix resolution change event handling in decoder

Kyrie Wu
2026-04-23T09:47:14Z

This patch refines the handling of resolution change events within
JPEG decoder worker. The `mtk_jpeg_set_queue_data` function is now
called to set up queue data before signaling a source change through
`mtk_jpeg_queue_src_chg_event`. By reorganizing these calls, the
patch ensures that necessary queue information is updated prior to
transitioning the context state to `MTK_JPEG_SOURCE_CHANGE`.
A condition is added to exit early if the context is already in the
`MTK_JPEG_SOURCE_CHANGE` state, preventing redundant operations and
improving processing efficiency.

Fixes: dedc21500334 ("media: mtk-jpegdec: add jpeg decode worker interface")
Signed-off-by: Kyrie Wu <kyrie.wu@mediatek.com>
---
drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
index 99f3f3b4d081..7e176a91404c 100644
--- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
+++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
@@ -1736,11 +1736,15 @@ static void mtk_jpegdec_worker(struct work_struct *work)

if (mtk_jpeg_check_resolution_change(ctx,
&jpeg_src_buf->dec_param)) {
- mtk_jpeg_queue_src_chg_event(ctx);
+ mtk_jpeg_set_queue_data(ctx, &jpeg_src_buf->dec_param);
ctx->state = MTK_JPEG_SOURCE_CHANGE;
+ mtk_jpeg_queue_src_chg_event(ctx);
goto getbuf_fail;
}

+ if (ctx->state == MTK_JPEG_SOURCE_CHANGE)
+ goto getbuf_fail;
+
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) {
--
2.45.2