rtl8188eu: remove dead code
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
parent
79b185dd1a
commit
22bd002ee7
@ -430,11 +430,6 @@ int ATOMIC_SUB_RETURN(ATOMIC_T *v, int i);
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int ATOMIC_INC_RETURN(ATOMIC_T *v);
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int ATOMIC_DEC_RETURN(ATOMIC_T *v);
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/* File operation APIs, just for linux now */
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int rtw_is_file_readable(char *path);
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int rtw_retrive_from_file(char *path, u8 __user *buf, u32 sz);
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int rtw_store_to_file(char *path, u8 __user *buf, u32 sz);
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struct rtw_netdev_priv_indicator {
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void *priv;
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u32 sizeof_priv;
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@ -356,214 +356,6 @@ inline int ATOMIC_DEC_RETURN(ATOMIC_T *v)
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return atomic_dec_return(v);
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}
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/* Open a file with the specific @param path, @param flag, @param mode
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* @param fpp the pointer of struct file pointer to get struct file pointer while file opening is success
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* @param path the path of the file to open
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* @param flag file operation flags, please refer to linux document
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* @param mode please refer to linux document
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* @return Linux specific error code
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*/
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static int openfile(struct file **fpp, char *path, int flag, int mode)
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{
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struct file *fp;
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fp = filp_open(path, flag, mode);
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if (IS_ERR(fp)) {
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*fpp = NULL;
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return PTR_ERR(fp);
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} else {
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*fpp = fp;
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return 0;
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}
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}
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/* Close the file with the specific @param fp
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* @param fp the pointer of struct file to close
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* @return always 0
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*/
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static int closefile(struct file *fp)
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{
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filp_close(fp, NULL);
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return 0;
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}
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static int readfile(struct file *fp, char __user *buf, int len)
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{
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int rlen = 0, sum = 0;
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if (!fp->f_op || !fp->f_op->read)
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return -EPERM;
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while (sum < len) {
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rlen = fp->f_op->read(fp, buf+sum, len-sum, &fp->f_pos);
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if (rlen > 0)
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sum += rlen;
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else if (0 != rlen)
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return rlen;
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else
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break;
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}
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return sum;
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}
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static int writefile(struct file *fp, char __user *buf, int len)
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{
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int wlen = 0, sum = 0;
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if (!fp->f_op || !fp->f_op->write)
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return -EPERM;
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while (sum < len) {
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wlen = fp->f_op->write(fp, buf+sum, len-sum, &fp->f_pos);
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if (wlen > 0)
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sum += wlen;
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else if (0 != wlen)
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return wlen;
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else
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break;
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}
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return sum;
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}
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/* Test if the specifi @param path is a file and readable
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* @param path the path of the file to test
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* @return Linux specific error code
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*/
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static int isfilereadable(char *path)
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{
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struct file *fp;
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int ret = 0;
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mm_segment_t oldfs;
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char __user buf;
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fp = filp_open(path, O_RDONLY, 0);
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if (IS_ERR(fp)) {
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ret = PTR_ERR(fp);
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} else {
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oldfs = get_fs(); set_fs(get_ds());
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if (1 != readfile(fp, &buf, 1))
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ret = PTR_ERR(fp);
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set_fs(oldfs);
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filp_close(fp, NULL);
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}
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return ret;
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}
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/* Open the file with @param path and retrive the file content into
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* memory starting from @param buf for @param sz at most
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* @param path the path of the file to open and read
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* @param buf the starting address of the buffer to store file content
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* @param sz how many bytes to read at most
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* @return the byte we've read, or Linux specific error code
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*/
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static int retrievefromfile(char *path, u8 __user *buf, u32 sz)
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{
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int ret = -1;
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mm_segment_t oldfs;
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struct file *fp;
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if (path && buf) {
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ret = openfile(&fp, path, O_RDONLY, 0);
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if (0 == ret) {
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DBG_88E("%s openfile path:%s fp =%p\n", __func__,
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path, fp);
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oldfs = get_fs(); set_fs(get_ds());
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ret = readfile(fp, buf, sz);
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set_fs(oldfs);
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closefile(fp);
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DBG_88E("%s readfile, ret:%d\n", __func__, ret);
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} else {
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DBG_88E("%s openfile path:%s Fail, ret:%d\n", __func__,
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path, ret);
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}
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} else {
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DBG_88E("%s NULL pointer\n", __func__);
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ret = -EINVAL;
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}
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return ret;
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}
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/*
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* Open the file with @param path and wirte @param sz byte of data starting from @param buf into the file
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* @param path the path of the file to open and write
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* @param buf the starting address of the data to write into file
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* @param sz how many bytes to write at most
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* @return the byte we've written, or Linux specific error code
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*/
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static int storetofile(char *path, u8 __user *buf, u32 sz)
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{
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int ret = 0;
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mm_segment_t oldfs;
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struct file *fp;
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if (path && buf) {
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ret = openfile(&fp, path, O_CREAT|O_WRONLY, 0666);
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if (0 == ret) {
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DBG_88E("%s openfile path:%s fp =%p\n", __func__, path, fp);
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oldfs = get_fs(); set_fs(get_ds());
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ret = writefile(fp, buf, sz);
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set_fs(oldfs);
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closefile(fp);
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DBG_88E("%s writefile, ret:%d\n", __func__, ret);
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} else {
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DBG_88E("%s openfile path:%s Fail, ret:%d\n", __func__, path, ret);
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}
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} else {
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DBG_88E("%s NULL pointer\n", __func__);
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ret = -EINVAL;
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}
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return ret;
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}
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/*
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* Test if the specifi @param path is a file and readable
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* @param path the path of the file to test
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* @return true or false
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*/
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int rtw_is_file_readable(char *path)
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{
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if (isfilereadable(path) == 0)
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return true;
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else
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return false;
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}
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/*
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* Open the file with @param path and retrive the file content into memory starting from @param buf for @param sz at most
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* @param path the path of the file to open and read
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* @param buf the starting address of the buffer to store file content
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* @param sz how many bytes to read at most
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* @return the byte we've read
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*/
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int rtw_retrive_from_file(char *path, u8 __user *buf, u32 sz)
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{
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int ret = retrievefromfile(path, buf, sz);
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return ret >= 0 ? ret : 0;
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}
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/*
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* Open the file with @param path and wirte @param sz byte of data
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* starting from @param buf into the file
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* @param path the path of the file to open and write
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* @param buf the starting address of the data to write into file
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* @param sz how many bytes to write at most
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* @return the byte we've written
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*/
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int rtw_store_to_file(char *path, u8 __user *buf, u32 sz)
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{
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int ret = storetofile(path, buf, sz);
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return ret >= 0 ? ret : 0;
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}
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struct net_device *rtw_alloc_etherdev_with_old_priv(int sizeof_priv,
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void *old_priv)
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{
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