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pinctrl: uniphier: add check if pins are valid

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The pinctrl datas of uniphier SoCs are the minimal subsets of kernel's one,
and some tables has no data to save the footprint size.
If the board dts tries to match a pin name on no pins defined SoC,
the footprint magic code causes "Synchronous Abort".

This checks if the 'pins' data is valid,
and if empty, avoids the abort with the warning as follows:

  WARNING at drivers/pinctrl/uniphier/pinctrl-uniphier-core.c:36/uniphier_pinctrl_get_pins_count()!
  pinctrl_select_state_full: pinctrl_config_one: err=-38

Signed-off-by: Dai Okamura <okamura.dai@socionext.com>
This commit is contained in:
Dai Okamura 2022-12-09 20:33:46 +09:00 committed by Tom Rini
parent bd8851c5b4
commit 1e91a0ea32
1 changed files with 3 additions and 0 deletions
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3
drivers/pinctrl/uniphier/pinctrl-uniphier-core.c
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@ -33,6 +33,9 @@ static int uniphier_pinctrl_get_pins_count(struct udevice *dev)
const struct uniphier_pinctrl_pin *pins = priv->socdata->pins;
int pins_count = priv->socdata->pins_count;
if (WARN_ON(!pins_count))
return 0; /* no table of pins */
/*
* We do not list all pins in the pin table to save memory footprint.
* Report the max pin number + 1 to fake the framework.