[PATCH next v2 10/11] block: Use a boolean expression instead of max() on booleans

[David Laight]

blk_stack_limits() contains:
        t->zoned = max(t->zoned, b->zoned);
These are bool, so can be replaced by bitwise or.
However it generates:
error: comparison of constant '0' with boolean expression is always true 
[-Werror=bool-compare]
inside the signedness check that max() does unless a '+ 0' is added.
It is a shame the compiler generates this warning for code that will
be optimised away.

Change so that the extra '+ 0' can be removed.

Signed-off-by: David Laight <david.lai...@aculab.com>
---
 block/blk-settings.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Changes for v2:
- Typographical and spelling corrections to the commit messages.
  Patches unchanged.

diff --git a/block/blk-settings.c b/block/blk-settings.c
index 06ea91e51b8b..9ca21fea039d 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -688,7 +688,7 @@ int blk_stack_limits(struct queue_limits *t, struct 
queue_limits *b,
                                                   b->max_secure_erase_sectors);
        t->zone_write_granularity = max(t->zone_write_granularity,
                                        b->zone_write_granularity);
-       t->zoned = max(t->zoned, b->zoned);
+       t->zoned = t->zoned | b->zoned;
        return ret;
 }
 EXPORT_SYMBOL(blk_stack_limits);
-- 
2.17.1

-
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