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authorJohannes Berg <johannes.berg@intel.com>2021-06-18 13:41:29 +0300
committerJohannes Berg <johannes.berg@intel.com>2021-06-18 14:25:15 +0300
commitb5642479b0f7168fe16d156913533fe65ab4f8d5 (patch)
tree5f3721248920b3460e874a45a35f64d931aeef2e /net/wireless/Makefile
parent1236af327af476731aa548dfcbbefb1a3ec6726a (diff)
downloadlinux-b5642479b0f7168fe16d156913533fe65ab4f8d5.tar.xz
cfg80211: make certificate generation more robust
If all net/wireless/certs/*.hex files are deleted, the build will hang at this point since the 'cat' command will have no arguments. Do "echo | cat - ..." so that even if the "..." part is empty, the whole thing won't hang. Cc: stable@vger.kernel.org Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Link: https://lore.kernel.org/r/iwlwifi.20210618133832.c989056c3664.Ic3b77531d00b30b26dcd69c64e55ae2f60c3f31e@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless/Makefile')
-rw-r--r--net/wireless/Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/wireless/Makefile b/net/wireless/Makefile
index 2eee93985ab0..af590ae606b6 100644
--- a/net/wireless/Makefile
+++ b/net/wireless/Makefile
@@ -28,7 +28,7 @@ $(obj)/shipped-certs.c: $(wildcard $(srctree)/$(src)/certs/*.hex)
@$(kecho) " GEN $@"
@(echo '#include "reg.h"'; \
echo 'const u8 shipped_regdb_certs[] = {'; \
- cat $^ ; \
+ echo | cat - $^ ; \
echo '};'; \
echo 'unsigned int shipped_regdb_certs_len = sizeof(shipped_regdb_certs);'; \
) > $@