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From: Sergei Zviagintsev <sergei@s15v.net>
Date: Wed, 10 Jun 2015 00:00:07 +0300
Subject: [PATCH] samples/kdbus: fix operator precedence issue in
KDBUS_ITEM_NEXT macro
`item' argument in KDBUS_ITEM_NEXT macro is not enclosed into
parentheses when the cast operator is applied, which leads to improper
type conversion if `item' is supplied as a complex expression, e.g.
KDBUS_ITEM_NEXT(condition ? a : b)
Use parentheses properly to guarantee right precedence.
Signed-off-by: Sergei Zviagintsev <sergei@s15v.net>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
samples/kdbus/kdbus-api.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/samples/kdbus/kdbus-api.h b/samples/kdbus/kdbus-api.h
index 2de4d6a8c51e..fab873b89d97 100644
--- a/samples/kdbus/kdbus-api.h
+++ b/samples/kdbus/kdbus-api.h
@@ -8,7 +8,7 @@
#define KDBUS_ITEM_HEADER_SIZE offsetof(struct kdbus_item, data)
#define KDBUS_ITEM_SIZE(s) KDBUS_ALIGN8((s) + KDBUS_ITEM_HEADER_SIZE)
#define KDBUS_ITEM_NEXT(item) \
- (typeof(item))(((uint8_t *)item) + KDBUS_ALIGN8((item)->size))
+ (typeof(item))((uint8_t *)(item) + KDBUS_ALIGN8((item)->size))
#define KDBUS_FOREACH(iter, first, _size) \
for (iter = (first); \
((uint8_t *)(iter) < (uint8_t *)(first) + (_size)) && \
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