Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/tools/perf/ui/setup.c b/tools/perf/ui/setup.c
index 44fe824..700335c 100644
--- a/tools/perf/ui/setup.c
+++ b/tools/perf/ui/setup.c
@@ -1,11 +1,12 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <pthread.h>
 #include <dlfcn.h>
+#include <unistd.h>
 
-#include "../util/cache.h"
+#include <subcmd/pager.h>
 #include "../util/debug.h"
 #include "../util/hist.h"
-#include "../util/util.h"
+#include "ui.h"
 
 pthread_mutex_t ui__lock = PTHREAD_MUTEX_INITIALIZER;
 void *perf_gtk_handle;
@@ -89,9 +90,9 @@
 		printf("GTK browser requested but could not find %s\n",
 		       PERF_GTK_DSO);
 		sleep(1);
+		use_browser = 1;
 		/* fall through */
 	case 1:
-		use_browser = 1;
 		if (ui__init() == 0)
 			break;
 		/* fall through */