perf probe: Clean up redundant tests in show_line_range()

It also removes some superflous parentheses.

Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
LKML-Reference: <1292854685-8230-4-git-send-email-fbuihuu@gmail.com>
Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 15 insertions, 11 deletions

diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 327604c1253f..b812f1412c3a 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -373,26 +373,30 @@ int show_line_range(struct line_range *lr, const char *module)
                 return -errno;
         }
         /* Skip to starting line number */
-        while (l < lr->start && ret >= 0)
+        while (l < lr->start) {
                 ret = show_one_line(fp, l++, true, false);
-        if (ret < 0)
-                goto end;
+                if (ret < 0)
+                        goto end;
+        }
 
         list_for_each_entry(ln, &lr->line_list, list) {
-                while (ln->line > l && ret >= 0)
-                        ret = show_one_line(fp, (l++) - lr->offset,
-                                            false, false);
-                if (ret >= 0)
-                        ret = show_one_line(fp, (l++) - lr->offset,
-                                            false, true);
+                for (; ln->line > l; l++) {
+                        ret = show_one_line(fp, l - lr->offset, false, false);
+                        if (ret < 0)
+                                goto end;
+                }
+                ret = show_one_line(fp, l++ - lr->offset, false, true);
                 if (ret < 0)
                         goto end;
         }
 
         if (lr->end == INT_MAX)
                 lr->end = l + NR_ADDITIONAL_LINES;
-        while (l <= lr->end && !feof(fp) && ret >= 0)
-                ret = show_one_line(fp, (l++) - lr->offset, false, false);
+        while (l <= lr->end && !feof(fp)) {
+                ret = show_one_line(fp, l++ - lr->offset, false, false);
+                if (ret < 0)
+                        break;
+        }
 end:
         fclose(fp);
         return ret;