From 92c44680c5c6f1342288f6626da4008d416d8e40 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Fri, 10 Jan 2020 14:19:27 +0100 Subject: [PATCH] pinctrl: sh-pfc: checker: Add function GPIO checks MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add checks for legacy function GPIO descriptors: 1. Function GPIOs must have a name, 2. Names must be unique, 3. Enum ID values must be unique. This exposes bugs like those fixed in - commit 884caadad128efad ("pinctrl: sh-pfc: sh7734: Fix duplicate TCLK1_B"), - commit 55b1cb1f03ad5eea ("pinctrl: sh-pfc: sh7264: Fix CAN function GPIOs"), - commit 02aeb2f21530c98f ("pinctrl: sh-pfc: sh7269: Fix CAN function GPIOs"), - commit db9c07272c8245a2 ("sh: sh7264: Remove bogus SSU GPIO function definitions"), - commit b4fba344a2930769 ("sh: sh7269: Remove bogus SSU GPIO function definitions"). Signed-off-by: Geert Uytterhoeven Reviewed-by: Niklas Söderlund Link: https://lore.kernel.org/r/20200110131927.1029-14-geert+renesas@glider.be --- drivers/pinctrl/sh-pfc/core.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/pinctrl/sh-pfc/core.c b/drivers/pinctrl/sh-pfc/core.c index da2baa9446ce..a2e19efa26e3 100644 --- a/drivers/pinctrl/sh-pfc/core.c +++ b/drivers/pinctrl/sh-pfc/core.c @@ -1012,6 +1012,26 @@ static void __init sh_pfc_check_info(const struct sh_pfc_soc_info *info) info->data_regs[i].enum_ids, info->data_regs[i].reg_width); } + +#ifdef CONFIG_PINCTRL_SH_FUNC_GPIO + /* Check function GPIOs */ + for (i = 0; i < info->nr_func_gpios; i++) { + const struct pinmux_func *func = &info->func_gpios[i]; + + if (!func->name) { + sh_pfc_err("empty function gpio %u\n", i); + continue; + } + for (j = 0; j < i; j++) { + if (same_name(func->name, info->func_gpios[j].name)) + sh_pfc_err("func_gpio %s: name conflict\n", + func->name); + } + if (sh_pfc_check_enum(drvname, func->enum_id)) + sh_pfc_err("%s enum_id %u conflict\n", func->name, + func->enum_id); + } +#endif } static void __init sh_pfc_check_driver(const struct platform_driver *pdrv)