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

David Laight
2024-01-28T19:36:25Z

blk_stack_limits() contains:
t->zoned = max(t->zoned, b->zoned);
These are bool, so it is just a 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.laight@aculab.com>
---
block/blk-settings.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

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);