From 3a4a2ec0b8ce17ae5129ea415939a18bc1504e24 Mon Sep 17 00:00:00 2001 From: miaohong chen Date: Tue, 4 Aug 2026 16:39:34 +0800 Subject: [PATCH] v4ldec: CB2 Log flooding caused by UVM attachment [1/1] MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit PD#SWPL-282824 Problem: Failed to attach UVM buffer. Solution: Non‑UVM buffers do not need to be attached to UVM. Verify: a9 Change-Id: Idb0332d90ec398c02d48d8f0b33e7c8abc516a22 Signed-off-by: miaohong chen --- drivers/amvdec_ports/aml_vcodec_dec.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/amvdec_ports/aml_vcodec_dec.c b/drivers/amvdec_ports/aml_vcodec_dec.c index 0aca995a3..f461ce81a 100644 --- a/drivers/amvdec_ports/aml_vcodec_dec.c +++ b/drivers/amvdec_ports/aml_vcodec_dec.c @@ -1213,6 +1213,9 @@ static void aml_uvm_mark_status(struct aml_vcodec_ctx *ctx, struct dma_buf *dma) struct uvm_hook_mod_info u_info = {0}; int ret = 0; + if (IS_ERR_OR_NULL(dma) || !dmabuf_is_uvm(dma)) + return; + if (uvm_get_hook_mod(dma, PROCESS_SRC_DECODER)) { uvm_put_hook_mod(dma, PROCESS_SRC_DECODER); v4l_dbg(ctx, V4L_DEBUG_CODEC_EXINFO, @@ -1224,7 +1227,7 @@ static void aml_uvm_mark_status(struct aml_vcodec_ctx *ctx, struct dma_buf *dma) u_info.free = aml_uvm_free_callback; ret = uvm_attach_hook_mod(dma, &u_info); if (ret < 0) { - v4l_dbg(ctx, V4L_DEBUG_CODEC_ERROR, + v4l_dbg(ctx, V4L_DEBUG_CODEC_EXINFO, "fail to set dmabuf decoder hook\n"); } @@ -1239,7 +1242,7 @@ static void aml_uvm_unmark_status(struct aml_vcodec_ctx *ctx, struct dma_buf *dm v4l_dbg(ctx, V4L_DEBUG_CODEC_EXINFO, "%s dbuf:%px\n", __func__ , dma); - if (!dmabuf_is_uvm(dma)) { + if (IS_ERR_OR_NULL(dma) || !dmabuf_is_uvm(dma)) { v4l_dbg(ctx, V4L_DEBUG_CODEC_EXINFO, "%s not uvm dmabuf!\n", __func__); return; -- 2.43.2