这个是什么问题？

hust_mb

在编译的时候出现在这样的问题，原来没见过，网上搜索也没有结果，还是贴出来看看：
[root@HUSTRAID linux-iscsi-4.0.2]# make

Note: using kernel source from /lib/modules/2.6.10/build containing
kernel version 2.6.10

Note: using kernel config from /lib/modules/2.6.10/build/.config

make[1]: Entering directory `/usr/src/linux-2.6.10'
  CC [M]  /home/lirans/linux-iscsi-4.0.2/driver/iscsi-initiator.o
  CC [M]  /home/lirans/linux-iscsi-4.0.2/driver/iscsi-attr.o
  CC [M]  /home/lirans/linux-iscsi-4.0.2/driver/iscsi-session.o
cc1: warnings being treated as errors
/home/lirans/linux-iscsi-4.0.2/driver/iscsi-session.c: In function âestablish_sessionâ:
/home/lirans/linux-iscsi-4.0.2/driver/iscsi-session.c:434: warning: pointer targets in passing argument 2 of âiscsi_loginâ differ in signedness
/home/lirans/linux-iscsi-4.0.2/driver/iscsi-session.c: At top level:
/home/lirans/linux-iscsi-4.0.2/driver/iscsi-session.c:481: warning: conflicting types for built-in function âstrdupâ
/home/lirans/linux-iscsi-4.0.2/driver/iscsi-session.c: In function âupdate_iscsi_stringsâ:
/home/lirans/linux-iscsi-4.0.2/driver/iscsi-session.c:523: warning: pointer targets in passing argument 1 of âstrcmpâ differ in signedness
/home/lirans/linux-iscsi-4.0.2/driver/iscsi-session.c:523: warning: pointer targets in passing argument 2 of âstrcmpâ differ in signedness
我把那些代码也贴出来看看：
        login_status = iscsi_login(session, session->rx_buffer,
                                   sizeof(session->rx_buffer), &status_class,
                                   &status_detail);－－－－第434行报错
其定义如下：
        u8 status_class;
        u8 status_detail;
关键是我不理解pointer targets in passing argument 1 of âstrcmpâ differ in signedness　这个错误，原来没见过，这是什么问题，其对应的代码如下：
        if (strcmp(ioctld->initiator_name, session->initiator_name)) {　　－－－第523行
                iname = strdup(ioctld->initiator_name, &rc);
                if (!iname) {
                        iscsi_host_err(session, "Failed to change "
                                       "InitiatorName from %s to %s\n",
                                       session->initiator_name,
                                       ioctld->initiator_name);
                        return rc;
                }
        }

望各位指教１２，谢谢了!

x11

int strcmp(const char *s1, const char *s2);

u8是unsigned的