In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. This patch fixes the following warning: kernel/trace/blktrace.c: In function ‘blk_trace_ioctl’: kernel/trace/blktrace.c:725:9: warning: this statement may fall through [-Wimplicit-fallthrough=] start = 1; ~~~~~~^~~ kernel/trace/blktrace.c:726:2: note: here case BLKTRACESTOP: ^~~~ Warning level 3 was used: -Wimplicit-fallthrough=3 This patch is part of the ongoing efforts to enable -Wimplicit-fallthrough. Signed-off-by: Gustavo A. R. Silva <gustavo@xxxxxxxxxxxxxx> --- kernel/trace/blktrace.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index fac0ddf8a8e2..e1c6d79fb4cc 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -723,6 +723,7 @@ int blk_trace_ioctl(struct block_device *bdev, unsigned cmd, char __user *arg) #endif case BLKTRACESTART: start = 1; + /* fall through */ case BLKTRACESTOP: ret = __blk_trace_startstop(q, start); break; -- 2.20.1
