diff options
| author |   Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2021-01-22 14:38:51 +0200 |
|---|---|---|
| committer |   Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2021-02-15 11:43:31 +0100 |
| commit | deb631c40114409077bb972b99fe80967bd62fd1 (patch) | |
| tree | 0a70f1d5ad0374d50d8dfe5afe72c9a2d63ccaed /drivers/gpio | |
| parent | lib/cmdline: Allow get_options() to take 0 to validate the input (diff) | |
| download | linux-dev-deb631c40114409077bb972b99fe80967bd62fd1.tar.xz linux-dev-deb631c40114409077bb972b99fe80967bd62fd1.zip | |
gpio: aggregator: Replace isrange() by using get_options()
We already have a nice helper called get_options() which can be used
to validate the input format. Replace isrange() by using it.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-aggregator.c | 33 |
1 files changed, 3 insertions, 30 deletions
diff --git a/drivers/gpio/gpio-aggregator.c b/drivers/gpio/gpio-aggregator.c index dfd8a4876a27..40a081b095fb 100644 --- a/drivers/gpio/gpio-aggregator.c +++ b/drivers/gpio/gpio-aggregator.c @@ -62,34 +62,6 @@ static char *get_arg(char **args) return start; } -static bool isrange(const char *s) -{ - size_t n; - - if (IS_ERR_OR_NULL(s)) - return false; - - while (1) { - n = strspn(s, "0123456789"); - if (!n) - return false; - - s += n; - - switch (*s++) { - case '\0': - return true; - - case '-': - case ',': - break; - - default: - return false; - } - } -} - static int aggr_add_gpio(struct gpio_aggregator *aggr, const char *key, int hwnum, unsigned int *n) { @@ -112,10 +84,10 @@ static int aggr_add_gpio(struct gpio_aggregator *aggr, const char *key, static int aggr_parse(struct gpio_aggregator *aggr) { + char *name, *offsets, *p; char *args = aggr->args; unsigned long *bitmap; unsigned int i, n = 0; - char *name, *offsets; int error = 0; bitmap = bitmap_alloc(ARCH_NR_GPIOS, GFP_KERNEL); @@ -130,7 +102,8 @@ static int aggr_parse(struct gpio_aggregator *aggr) goto free_bitmap; } - if (!isrange(offsets)) { + p = get_options(offsets, 0, &error); + if (error == 0 || *p) { /* Named GPIO line */ error = aggr_add_gpio(aggr, name, U16_MAX, &n); if (error) |