Commit 1f3c790b authored by Randy Dunlap's avatar Randy Dunlap Committed by Linus Torvalds
Browse files

dynamic-debug-howto: fix optional/omitted ending line number to be LARGE instead of 0

line-range is supposed to treat "1-" as "1-endoffile", so
handle the special case by setting last_lineno to UINT_MAX.

Fixes this error:

  dynamic_debug:ddebug_parse_query: last-line:0 < 1st-line:1
  dynamic_debug:ddebug_exec_query: query parse failed


Signed-off-by: default avatarRandy Dunlap <>
Acked-by: default avatarJason Baron <>
Signed-off-by: default avatarAndrew Morton <>
Signed-off-by: default avatarLinus Torvalds <>
parent 8c703d66
......@@ -360,6 +360,10 @@ static int ddebug_parse_query(char *words[], int nwords,
if (parse_lineno(last, &query->last_lineno) < 0)
return -EINVAL;
/* special case for last lineno not specified */
if (query->last_lineno == 0)
query->last_lineno = UINT_MAX;
if (query->last_lineno < query->first_lineno) {
pr_err("last-line:%d < 1st-line:%d\n",
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