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| author | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2017-03-29 11:38:13 -0400 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2017-03-31 18:00:35 -0400 |
| commit | c1bc5919f6741cc4b0c83e3058b3d65d76c943e3 (patch) | |
| tree | 39c2658a31e40193ecb4893558631d467edd49fe /kernel/trace/ftrace.c | |
| parent | 2b87965a1e6b6051435315d3f04627a5dbad979c (diff) | |
| download | linux-c1bc5919f6741cc4b0c83e3058b3d65d76c943e3.tar.gz linux-c1bc5919f6741cc4b0c83e3058b3d65d76c943e3.tar.bz2 linux-c1bc5919f6741cc4b0c83e3058b3d65d76c943e3.zip | |
ftrace: Clean up __seq_open_private() return check
The return status check of __seq_open_private() is rather strange:
iter = __seq_open_private();
if (iter) {
/* do stuff */
}
return iter ? 0 : -ENOMEM;
It makes much more sense to do the return of failure right away:
iter = __seq_open_private();
if (!iter)
return -ENOMEM;
/* do stuff */
return 0;
This clean up will make updates to this code a bit nicer.
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/ftrace.c')
| -rw-r--r-- | kernel/trace/ftrace.c | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 0556a202c055..527c4d3e8d7f 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -3355,12 +3355,13 @@ ftrace_avail_open(struct inode *inode, struct file *file) return -ENODEV; iter = __seq_open_private(file, &show_ftrace_seq_ops, sizeof(*iter)); - if (iter) { - iter->pg = ftrace_pages_start; - iter->ops = &global_ops; - } + if (!iter) + return -ENOMEM; - return iter ? 0 : -ENOMEM; + iter->pg = ftrace_pages_start; + iter->ops = &global_ops; + + return 0; } static int @@ -3369,13 +3370,14 @@ ftrace_enabled_open(struct inode *inode, struct file *file) struct ftrace_iterator *iter; iter = __seq_open_private(file, &show_ftrace_seq_ops, sizeof(*iter)); - if (iter) { - iter->pg = ftrace_pages_start; - iter->flags = FTRACE_ITER_ENABLED; - iter->ops = &global_ops; - } + if (!iter) + return -ENOMEM; - return iter ? 0 : -ENOMEM; + iter->pg = ftrace_pages_start; + iter->flags = FTRACE_ITER_ENABLED; + iter->ops = &global_ops; + + return 0; } /** |