add build kerneldeb

hc

2023-11-23 7d07b3ae8ddad407913c5301877e694430a3263f

 kernel/drivers/gpu/drm/rockchip/ebc-dev/bufmanage/buf_manage.c
..
..
@@ -76,6 +76,29 @@
76
76
 	}
77
77
 }
78
78
 
79
+int ebc_drop_one_dsp_buf(void)
80
+{
81
+	struct ebc_buf_s *temp_buf;
82
+	int temp_pos;
83
+
84
+	mutex_lock(&ebc_buf_info.dsp_buf_lock);
85
+	if (ebc_buf_info.dsp_buf_list) {
86
+		if (ebc_buf_info.dsp_buf_list->nb_elt > 0) {
87
+			temp_pos = ebc_buf_info.dsp_buf_list->nb_elt - 1;
88
+			temp_buf = (struct ebc_buf_s *)buf_list_get(ebc_buf_info.dsp_buf_list, temp_pos);
89
+			if (temp_buf->needpic == 2) {
90
+				buf_list_remove(ebc_buf_info.dsp_buf_list, temp_pos);
91
+				ebc_buf_release(temp_buf);
92
+				mutex_unlock(&ebc_buf_info.dsp_buf_lock);
93
+				return BUF_SUCCESS;
94
+			}
95
+		}
96
+	}
97
+	mutex_unlock(&ebc_buf_info.dsp_buf_lock);
98
+
99
+	return BUF_ERROR;
100
+}
101
+
79
102
 int ebc_add_to_dsp_buf_list(struct ebc_buf_s *dsp_buf)
80
103
 {
81
104
 	mutex_lock(&ebc_buf_info.dsp_buf_lock);