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| author | Nathan Chancellor <natechancellor@gmail.com> | 2019-06-25 11:23:52 -0700 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2019-06-26 14:39:05 +0200 |
| commit | f7019b7b0ad14bde732b8953161994edfc384953 (patch) | |
| tree | 3933bc23ab9365c07086d93ac71460892ee900b7 /net/xdp | |
| parent | 0eb84fa6e6163fd5e238661b376c959e8cdd549a (diff) | |
| download | linux-stable-f7019b7b0ad14bde732b8953161994edfc384953.tar.gz linux-stable-f7019b7b0ad14bde732b8953161994edfc384953.tar.bz2 linux-stable-f7019b7b0ad14bde732b8953161994edfc384953.zip | |
xsk: Properly terminate assignment in xskq_produce_flush_desc
Clang warns:
In file included from net/xdp/xsk_queue.c:10:
net/xdp/xsk_queue.h:292:2: warning: expression result unused
[-Wunused-value]
WRITE_ONCE(q->ring->producer, q->prod_tail);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:284:6: note: expanded from macro 'WRITE_ONCE'
__u.__val; \
~~~ ^~~~~
1 warning generated.
The q->prod_tail assignment has a comma at the end, not a semi-colon.
Fix that so clang no longer warns and everything works as expected.
Fixes: c497176cb2e4 ("xsk: add Rx receive functions and poll support")
Link: https://github.com/ClangBuiltLinux/linux/issues/544
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Acked-by: Björn Töpel <bjorn.topel@intel.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'net/xdp')
| -rw-r--r-- | net/xdp/xsk_queue.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/xdp/xsk_queue.h b/net/xdp/xsk_queue.h index 88b9ae24658d..cba4a640d5e8 100644 --- a/net/xdp/xsk_queue.h +++ b/net/xdp/xsk_queue.h @@ -288,7 +288,7 @@ static inline void xskq_produce_flush_desc(struct xsk_queue *q) /* Order producer and data */ smp_wmb(); /* B, matches C */ - q->prod_tail = q->prod_head, + q->prod_tail = q->prod_head; WRITE_ONCE(q->ring->producer, q->prod_tail); } |