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gpiolib: devprop: Warn if gpio-line-names is too long

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Some DT authors (including myself) have messed up the length of
gpio-line-names and made it longer than it should be. Add a warning here
so that developers can figure out that they've messed up their DT and
should fix it.

Cc: Alexandru M Stan <amstan@chromium.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This commit is contained in:
Stephen Boyd 2020-04-23 13:34:16 -07:00 committed by Bartosz Golaszewski
parent aa58a21ae3
commit 9784c9963f
1 changed files with 4 additions and 1 deletions
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5
drivers/gpio/gpiolib-devprop.c
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@ -37,8 +37,11 @@ void devprop_gpiochip_set_names(struct gpio_chip *chip,
if (count < 0)
return;
if (count > gdev->ngpio)
if (count > gdev->ngpio) {
dev_warn(&gdev->dev, "gpio-line-names is length %d but should be at most length %d",
count, gdev->ngpio);
count = gdev->ngpio;
}
names = kcalloc(count, sizeof(*names), GFP_KERNEL);
if (!names)