static int prepare_ipc_shm_pages(struct cr_img *img, const IpcShmEntry *shm)
 {
-       int ret;
        void *data;
+       int ifd;
+       ssize_t size, off;

        data = shmat(shm->desc->id, NULL, 0);
        if (data == (void *)-1) {
                pr_perror("Failed to attach IPC shared memory");
                return -errno;
        }
-       ret = read_img_buf(img, data, round_up(shm->size, sizeof(u32)));
-       if (ret < 0) {
-               pr_err("Failed to read IPC shared memory data\n");
-               return ret;
-       }
+
+       ifd = img_raw_fd(img);
+       size = round_up(shm->size, sizeof(u32));
+       off = 0;
+       do {
+               ssize_t ret;
+
+               ret = read(ifd, data + off, size - off);
+               if (ret <= 0) {
+                       pr_perror("Failed to write IPC shared memory data");
+                       return (int)ret;
+               }
+
+               off += ret;
+       } while (off < size);
        if (shmdt(data)) {
                pr_perror("Failed to detach IPC shared memory");
                return -errno;