diff options
| author | Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> | 2023-09-25 18:45:48 +0300 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2023-10-13 10:38:04 +0300 |
| commit | c944d9dea75e453d18bc8c100022e990c2eac3cb (patch) | |
| tree | 3e0d2bba89e92f90f39002e2192e0ba7a0ea4d57 /drivers/pinctrl | |
| parent | 84ba5131693335f4ffa277227157a31e98168425 (diff) | |
| download | linux-c944d9dea75e453d18bc8c100022e990c2eac3cb.tar.xz | |
pinctrl: renesas: rzg2l: Add validation of GPIO pin in rzg2l_gpio_request()
Validate the GPIO pin request in the rzg2l_gpio_request() callback using
the rzg2l_validate_gpio_pin() function. This stops any accidental usage
of GPIO pins which are not supported by the SoC.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Link: https://lore.kernel.org/r/20230925154548.27048-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/renesas/pinctrl-rzg2l.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c index 03b36c6b2b6d..402419484e1d 100644 --- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c +++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c @@ -795,12 +795,18 @@ static const struct pinconf_ops rzg2l_pinctrl_confops = { static int rzg2l_gpio_request(struct gpio_chip *chip, unsigned int offset) { struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip); + const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[offset]; u32 port = RZG2L_PIN_ID_TO_PORT(offset); u8 bit = RZG2L_PIN_ID_TO_PIN(offset); + u32 *pin_data = pin_desc->drv_data; unsigned long flags; u8 reg8; int ret; + ret = rzg2l_validate_gpio_pin(pctrl, *pin_data, port, bit); + if (ret) + return ret; + ret = pinctrl_gpio_request(chip->base + offset); if (ret) return ret; |