From: Pengfei Liu <pengfei.liu@amlogic.com>
Date: Tue, 15 Jun 2021 09:07:46 +0000 (+0800)
Subject: demux: clean demux output buffer [1/1]
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1a195fe3684e40d27f024eea560b8a13e3c4ad7b;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

demux: clean demux output buffer [1/1]

PD#SWPL-52784

Problem:
 dmx have remaining data.

Solution:
 clean dmx output buffer

Verify:
 verified at vo svp.

Signed-off-by: Pengfei Liu <pengfei.liu@amlogic.com>
Change-Id: Ia392e83533a0ec8e3b6d9ed13a219a07a23eced3
---

diff --git a/drivers/amlogic/dvb/demux/sc2_demux/mem_desc.c b/drivers/amlogic/dvb/demux/sc2_demux/mem_desc.c
index 54c3b1458c37..73acd9eb497e 100644
--- a/drivers/amlogic/dvb/demux/sc2_demux/mem_desc.c
+++ b/drivers/amlogic/dvb/demux/sc2_demux/mem_desc.c
@@ -379,6 +379,9 @@ int _alloc_buff(unsigned int len, int sec_level,
 
 	iret = cache_malloc(len, &buf_start_virt, &buf_start);
 	if (iret == 0) {
+		pr_dbg("init cache phy:0x%lx, virt:0x%lx, len:%d\n",
+				buf_start, buf_start_virt, len);
+		memset((char *)buf_start_virt, 0, len);
 		if (sec_level) {
 #ifdef CONFIG_AMLOGIC_TEE
 			ret = tee_protect_mem_by_type(TEE_MEM_TYPE_DEMUX,
@@ -405,6 +408,10 @@ int _alloc_buff(unsigned int len, int sec_level,
 		dprint("%s fail\n", __func__);
 		return -1;
 	}
+	buf_start_virt = (unsigned long)codec_mm_phys_to_virt(buf_start);
+	pr_dbg("init phy:0x%lx, virt:0x%lx, len:%d\n",
+			buf_start, buf_start_virt, len);
+	memset((char *)buf_start_virt, 0, len);
 	if (sec_level) {
 #ifdef CONFIG_AMLOGIC_TEE
 		//ret = tee_protect_tvp_mem(buf_start, len, handle);
@@ -414,7 +421,6 @@ int _alloc_buff(unsigned int len, int sec_level,
 		pr_dbg("%s, protect 0x%lx, len:%d, ret:0x%x\n",
 				__func__, buf_start, len, ret);
 	}
-	buf_start_virt = (unsigned long)codec_mm_phys_to_virt(buf_start);
 
 	*vir_mem = buf_start_virt;
 	*phy_mem = buf_start;