pseries: convert papr_platform_dump_create_handle() to FD_ADD()

Link: https://patch.msgid.link/20251123-work-fd-prepare-v4-35-b6efa1706cfd@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>

Author: brauner

arch/powerpc/platforms/pseries/papr-platform-dump.c

@@ -303,8 +303,6 @@ static long papr_platform_dump_create_handle(u64 dump_tag)
 {
 	struct ibm_platform_dump_params *params;
 	u64 param_dump_tag;
-	struct file *file;
-	long err;
 	int fd;
 
 	/*
@@ -334,34 +332,22 @@ static long papr_platform_dump_create_handle(u64 dump_tag)
 	params->dump_tag_lo = (u32)(dump_tag & 0x00000000ffffffffULL);
 	params->status = RTAS_IBM_PLATFORM_DUMP_START;
 
-	fd = get_unused_fd_flags(O_RDONLY | O_CLOEXEC);
+	fd = FD_ADD(O_RDONLY | O_CLOEXEC,
+		    anon_inode_getfile_fmode("[papr-platform-dump]",
+					     &papr_platform_dump_handle_ops,
+					     (void *)params, O_RDONLY,
+					     FMODE_LSEEK | FMODE_PREAD));
 	if (fd < 0) {
-		err = fd;
-		goto free_area;
-	}
-
-	file = anon_inode_getfile_fmode("[papr-platform-dump]",
-				&papr_platform_dump_handle_ops,
-				(void *)params, O_RDONLY,
-				FMODE_LSEEK | FMODE_PREAD);
-	if (IS_ERR(file)) {
-		err = PTR_ERR(file);
-		goto put_fd;
+		rtas_work_area_free(params->work_area);
+		kfree(params);
+		return fd;
 	}
 
-	fd_install(fd, file);
-
 	list_add(&params->list, &platform_dump_list);
 
 	pr_info("%s (%d) initiated platform dump for dump tag %llu\n",
 		current->comm, current->pid, dump_tag);
 	return fd;
-put_fd:
-	put_unused_fd(fd);
-free_area:
-	rtas_work_area_free(params->work_area);
-	kfree(params);
-	return err;
 }
 
 /*