From 0dfb2645ea1e8837277c0e841b38cb57397afddc Mon Sep 17 00:00:00 2001
From: Kaspar Schleiser <kaspar@schleiser.de>
Date: Thu, 24 Mar 2022 12:29:59 +0100
Subject: [PATCH] make: pkg.mk: don't call `git am` if there are no patches

---
 pkg/pkg.mk | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pkg/pkg.mk b/pkg/pkg.mk
index abc67d51bf..96494f53cd 100644
--- a/pkg/pkg.mk
+++ b/pkg/pkg.mk
@@ -115,7 +115,9 @@ $(PKG_PATCHED): $(PKG_PATCHED_PREREQUISITES)
 	$(call gen_dependency_files,$@.d,$(PKG_PATCHED_PREREQUISITES))
 	$(Q)$(GIT_IN_PKG) clean $(GIT_QUIET) -xdff '**' -e $(PKG_STATE:$(PKG_SOURCE_DIR)/%='%*')
 	$(Q)$(GIT_IN_PKG) checkout $(GIT_QUIET) -f $(PKG_VERSION)
-	$(Q)$(GIT_IN_PKG) $(GITFLAGS) am $(GITAMFLAGS) $(PKG_PATCHES) </dev/null
+	$(Q) if test -n "$(PKG_PATCHES)" ; then \
+	       $(GIT_IN_PKG) $(GITFLAGS) am $(GITAMFLAGS) $(PKG_PATCHES) ; \
+	     fi
 	@touch $@
 
 $(PKG_DOWNLOADED): $(MAKEFILE_LIST) | $(PKG_SOURCE_DIR)/.git