From: ljf <ljf@rock-chips.com>
Date: Fri, 18 Apr 2014 02:11:08 +0000 (+0800)
Subject: limit usr ion fd up to 1023, original limitation 255 maybe cause overflow
X-Git-Tag: firefly_0821_release~5505
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e4147baddd6f3776997701e89496d5ad6444834c;p=firefly-linux-kernel-4.4.55.git

limit usr ion fd up to 1023, original limitation 255 maybe cause overflow
---

diff --git a/arch/arm/mach-rockchip/vcodec_service.c b/arch/arm/mach-rockchip/vcodec_service.c
index 0c340d4fcb4b..87bd3a1af479 100755
--- a/arch/arm/mach-rockchip/vcodec_service.c
+++ b/arch/arm/mach-rockchip/vcodec_service.c
@@ -630,8 +630,8 @@ static int vcodec_bufid_to_iova(struct vpu_service_info *pservice, u8 *tbl, int
         if (copy_from_user(&usr_fd, &reg->reg[addr_tbl_vpu_dec[i]], sizeof(usr_fd)))
             return -EFAULT;
 #else
-        usr_fd = reg->reg[tbl[i]] & 0xFF;
-        offset = reg->reg[tbl[i]] >> 8;
+        usr_fd = reg->reg[tbl[i]] & 0x3FF;
+        offset = reg->reg[tbl[i]] >> 10;
         
 #endif
         if (usr_fd != 0) {