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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2021-01-22 14:38:49 +0200 |
|---|---|---|
| committer | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2021-02-15 11:43:31 +0100 |
| commit | f1f405c35ec217e4f68f9e25cd83d003f8a6d03e (patch) | |
| tree | 59fb2c03ef44769b20b24dfbcddf91d9e1d318c2 /lib | |
| parent | d3c7cfc6d3dc315ca58b516303ccb0ac8b005600 (diff) | |
| download | linux-f1f405c35ec217e4f68f9e25cd83d003f8a6d03e.tar.bz2 | |
lib/cmdline: Update documentation to reflect behaviour
get_options() API has some tricks to optimize that may be not so obvious
to the caller. Update documentation to reflect current behaviour.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/cmdline.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/cmdline.c b/lib/cmdline.c index b390dd03363b..f33882f1cd52 100644 --- a/lib/cmdline.c +++ b/lib/cmdline.c @@ -83,7 +83,7 @@ EXPORT_SYMBOL(get_option); * get_options - Parse a string into a list of integers * @str: String to be parsed * @nints: size of integer array - * @ints: integer array + * @ints: integer array (must have room for at least one element) * * This function parses a string containing a comma-separated * list of integers, a hyphen-separated range of _positive_ integers, @@ -91,6 +91,11 @@ EXPORT_SYMBOL(get_option); * full, or when no more numbers can be retrieved from the * string. * + * Returns: + * + * The first element is filled by the number of collected integers + * in the range. The rest is what was parsed from the @str. + * * Return value is the character in the string which caused * the parse to end (typically a null terminator, if @str is * completely parseable). |