From 98204c249b45d470975fd790a3068da9fcd912eb Mon Sep 17 00:00:00 2001
From: xiao-mang <ly1874108@126.com>
Date: Fri, 19 Apr 2024 14:48:17 +0800
Subject: [PATCH] fix for art-pi smart

---
 bsp/nxp/imx/imx6ull-smart/README.md       | 68 ++++++++++-------------
 components/dfs/dfs_v2/src/dfs_file_mmap.c |  2 +-
 components/dfs/dfs_v2/src/dfs_pcache.c    |  2 +-
 3 files changed, 32 insertions(+), 40 deletions(-)

diff --git a/bsp/nxp/imx/imx6ull-smart/README.md b/bsp/nxp/imx/imx6ull-smart/README.md
index 2e76aed277..29cfc83225 100644
--- a/bsp/nxp/imx/imx6ull-smart/README.md
+++ b/bsp/nxp/imx/imx6ull-smart/README.md
@@ -6,34 +6,36 @@ ART-pi smart采用了米尔科技的imx6ull核心板，硬件由韦东山团队
 
 ![硬件资源](figures/hw_resources.png)
 
-## 应用列表
-
--[x] cpp_tc
-
--[x] hello
-
--[x] zlib_tc
-
--[x] smart-fetch
-
--[x] umailbox
-
--[x] busybox命令(可通过help查看)
-
--[x] WIFI
-
--[x] EMMC读写
-
-下列应用支持ash后才可以使用
-
--[ ] shm_ping
-
--[ ]shm_pong
-
--[ ]webclient
-
--[ ]webserver  
-
+> ## 当前支持情况
+> ### 内核
+> * [ ]  rt-thread
+> * [x]  rt-smart
+> 
+> ### 驱动
+> * [x]  uart
+> * [x]  SPI
+> * [x]  GPIO
+> * [x]  sdcard
+> * [x]  RW007
+> * [x]  enet
+> * [ ]  usb
+> * [x]  emmc
+> 
+> ### 组件
+> * [x]  fat文件系统
+> * [x]  LWIP网络协议栈
+> * [x]  wlan
+> 
+> ### 应用
+> * [x]  xmake 构建环境
+> * [x]  busybox
+> * [x]  smart-apps
+> 
+> ### 待完善、修复
+> * [ ]  ash  支持ash开机自启动
+> * [ ]  网络 以太网网络问题修复
+> * [ ]  emmc 从emmc启动内核、挂载文件系统
+ 
 ## 应用编译
 
 参考https://github.com/RT-Thread/userapps.git的README.md搭建xmake编译环境并编译smart应用
@@ -81,13 +83,3 @@ go 0x80001000
 ```bash
 fatload mmc 0:1 0x80001000 rtthread.bin; dcache flush; go 0x80001000
 ```
-
-## 待改进
-
-* 支持ash开机自启动
-
-* 以太网网络问题
-
-* Emmc1、2、3 mkfs失败
-
-* 从emmc启动内核
\ No newline at end of file
diff --git a/components/dfs/dfs_v2/src/dfs_file_mmap.c b/components/dfs/dfs_v2/src/dfs_file_mmap.c
index b976a85a27..430839112a 100644
--- a/components/dfs/dfs_v2/src/dfs_file_mmap.c
+++ b/components/dfs/dfs_v2/src/dfs_file_mmap.c
@@ -184,7 +184,7 @@ void page_read(struct rt_varea *varea, struct rt_aspace_io_msg *msg)
                varea->start, varea->size, varea->offset, varea->attr, varea->flag);
 
         ret = dfs_aspace_mmap_read(file, varea, msg);
-        if (ret >= 0)
+        if (ret > 0)
         {
             msg->response.status = MM_FAULT_STATUS_OK;
             if (ret < ARCH_PAGE_SIZE)
diff --git a/components/dfs/dfs_v2/src/dfs_pcache.c b/components/dfs/dfs_v2/src/dfs_pcache.c
index 350ad1f061..57f4510e93 100644
--- a/components/dfs/dfs_v2/src/dfs_pcache.c
+++ b/components/dfs/dfs_v2/src/dfs_pcache.c
@@ -1105,7 +1105,7 @@ int dfs_aspace_read(struct dfs_file *file, void *buf, size_t count, off_t *pos)
                 }
 
                 len = count > len ? len : count;
-                if (len > 0)
+                if (len)
                 {
                     rt_memcpy(ptr, page->page + *pos - page->fpos, len);
                     ptr += len;