perf tools: Fix unwind build on i386
authorBen Hutchings <ben@decadent.org.uk>
Sat, 22 Jul 2017 16:37:33 +0000 (17:37 +0100)
committerSalvatore Bonaccorso <carnil@debian.org>
Sun, 19 Sep 2021 08:49:04 +0000 (09:49 +0100)
commit9771dae34f7e6a352f52a4e26e45c94b9c8c77a4
treec9857171470958c5efaf03278e20149c2e111311
parent5befc8d2b44c137407cd95dd7d4554bc76027ecf
perf tools: Fix unwind build on i386

Forwarded: no

EINVAL may not be defined when building unwind-libunwind.c with
REMOTE_UNWIND_LIBUNWIND, resulting in a compiler error in
LIBUNWIND__ARCH_REG_ID().  Its only caller, access_reg(), only checks
for a negative return value and doesn't care what it is.  So change
-EINVAL to -1.

Fixes: 52ffe0ff02fc ("Support x86(32-bit) cross platform callchain unwind.")
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Gbp-Pq: Topic bugfix/x86
Gbp-Pq: Name perf-tools-fix-unwind-build-on-i386.patch
tools/perf/arch/x86/util/unwind-libunwind.c