summaryrefslogtreecommitdiff
path: root/kernel
diff options
context:
space:
mode:
authorJames Hogan <james.hogan@imgtec.com>2014-06-04 16:11:16 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-04 16:54:14 -0700
commit2c0d259e0e580dd95dd5d2d5aa4926169228d4a0 (patch)
tree485207a39d1ac910eb07567205bede64c28d8316 /kernel
parent00f01791e159ba7fb9d397c27d34377206157c6a (diff)
compiler.h: avoid sparse errors in __compiletime_error_fallback()
Usually, BUG_ON and friends aren't even evaluated in sparse, but recently compiletime_assert_atomic_type() was added, and that now results in a sparse warning every time it is used. The reason turns out to be the temporary variable, after it sparse no longer considers the value to be a constant, and results in a warning and an error. The error is the more annoying part of this as it suppresses any further warnings in the same file, hiding other problems. Unfortunately the condition cannot be simply expanded out to avoid the temporary variable since it breaks compiletime_assert on old versions of GCC such as GCC 4.2.4 which the latest metag compiler is based on. Therefore #ifndef __CHECKER__ out the __compiletime_error_fallback which uses the potentially negative size array to trigger a conditional compiler error, so that sparse doesn't see it. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Johannes Berg <johannes.berg@intel.com> Cc: Daniel Santos <daniel.santos@pobox.com> Cc: Luciano Coelho <luciano.coelho@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions