From: Dirk Müller <dmueller@xxxxxxx> commit a5359ddd052860bacf957e65fe819c63e974b3a6 upstream. GCC 10+ defaults to -fno-common, which enforces proper declaration of external references using "extern". without this change a link would fail with: lib/raid6/test/algos.c:28: multiple definition of `raid6_call'; lib/raid6/test/test.c:22: first defined here the pq.h header that is included already includes an extern declaration so we can just remove the redundant one here. Cc: <stable@xxxxxxxxxxxxxxx> Signed-off-by: Dirk Müller <dmueller@xxxxxxx> Reviewed-by: Paul Menzel <pmenzel@xxxxxxxxxxxxx> Signed-off-by: Song Liu <song@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- lib/raid6/test/test.c | 1 - 1 file changed, 1 deletion(-) --- a/lib/raid6/test/test.c +++ b/lib/raid6/test/test.c @@ -22,7 +22,6 @@ #define NDISKS 16 /* Including P and Q */ const char raid6_empty_zero_page[PAGE_SIZE] __attribute__((aligned(PAGE_SIZE))); -struct raid6_calls raid6_call; char *dataptrs[NDISKS]; char data[NDISKS][PAGE_SIZE] __attribute__((aligned(PAGE_SIZE)));
