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* [PATCH] lib/siphash.c:: annotate implicit fall throughs
@ 2019-01-14 20:19 Mathieu Malaterre
  2019-01-14 21:04 ` Gustavo A. R. Silva
                   ` (2 more replies)
  0 siblings, 3 replies; 9+ messages in thread
From: Mathieu Malaterre @ 2019-01-14 20:19 UTC (permalink / raw)
  To: Jason A. Donenfeld; +Cc: Mathieu Malaterre, linux-kernel

There is a plan to build the kernel with -Wimplicit-fallthrough and
these places in the code produced warnings (W=1). Fix them up.

This commit remove the following warnings:

  lib/siphash.c:71:12: warning: this statement may fall through [-Wimplicit-fallthrough=]
  lib/siphash.c:72:12: warning: this statement may fall through [-Wimplicit-fallthrough=]
  lib/siphash.c:73:12: warning: this statement may fall through [-Wimplicit-fallthrough=]
  lib/siphash.c:75:12: warning: this statement may fall through [-Wimplicit-fallthrough=]
  lib/siphash.c:434:12: warning: this statement may fall through [-Wimplicit-fallthrough=]

Signed-off-by: Mathieu Malaterre <malat@debian.org>
---
 lib/siphash.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/siphash.c b/lib/siphash.c
index 3ae58b4edad6..b95624f5aa34 100644
--- a/lib/siphash.c
+++ b/lib/siphash.c
@@ -69,10 +69,14 @@ u64 __siphash_aligned(const void *data, size_t len, const siphash_key_t *key)
 #else
 	switch (left) {
 	case 7: b |= ((u64)end[6]) << 48;
+		/* fall through */
 	case 6: b |= ((u64)end[5]) << 40;
+		/* fall through */
 	case 5: b |= ((u64)end[4]) << 32;
+		/* fall through */
 	case 4: b |= le32_to_cpup(data); break;
 	case 3: b |= ((u64)end[2]) << 16;
+		/* fall through */
 	case 2: b |= le16_to_cpup(data); break;
 	case 1: b |= end[0];
 	}
@@ -432,6 +436,7 @@ u32 __hsiphash_aligned(const void *data, size_t len, const hsiphash_key_t *key)
 	}
 	switch (left) {
 	case 3: b |= ((u32)end[2]) << 16;
+		/* fall through */
 	case 2: b |= le16_to_cpup(data); break;
 	case 1: b |= end[0];
 	}
-- 
2.19.2


^ permalink raw reply related	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2019-03-14  7:01 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-01-14 20:19 [PATCH] lib/siphash.c:: annotate implicit fall throughs Mathieu Malaterre
2019-01-14 21:04 ` Gustavo A. R. Silva
2019-03-13 20:24 ` [PATCH v2] lib/siphash.c: " Mathieu Malaterre
2019-03-13 20:34   ` Jason A. Donenfeld
2019-03-13 20:44     ` Gustavo A. R. Silva
2019-03-13 20:52     ` Mathieu Malaterre
2019-03-13 21:12 ` [PATCH v3] " Mathieu Malaterre
2019-03-14  1:50   ` Joe Perches
2019-03-14  7:01   ` Jason A. Donenfeld

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