From b13431ed6eab808affbd796a7c8caf05c7ae4cdd Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Thu, 8 Aug 2019 15:19:02 +0900 Subject: [PATCH] pinctrl: sh-pfc: Remove incomplete flag "cfg->type" The old commit c58d9c1b26e3 ("sh-pfc: Implement generic pinconf support") broke the cfg->type flag to PINMUX_TYPE_FUNCTION because sh_pfc_pinconf_set() didn't call sh_pfc_reconfig_pin(). Now if we fix the cfg->type condition, it gets worse because: - Some drivers might be deferred so that .set_mux() will be called multiple times. - In such the case, the sh-pfc driver returns -EBUSY even if the group is the same, and then that driver fails to probe. Since the pinctrl subsystem already has such conditions according to @set_mux and @gpio_request_enable, this patch just remove the incomplete flag from sh-pfc/pinctrl.c. Fixes: c58d9c1b26e3 ("sh-pfc: Implement generic pinconf support") Signed-off-by: Yoshihiro Shimoda Reviewed-by: Simon Horman Signed-off-by: Geert Uytterhoeven --- drivers/pinctrl/sh-pfc/pinctrl.c | 26 -------------------------- 1 file changed, 26 deletions(-) diff --git a/drivers/pinctrl/sh-pfc/pinctrl.c b/drivers/pinctrl/sh-pfc/pinctrl.c index 864da24394d6..ab2aa93dd73b 100644 --- a/drivers/pinctrl/sh-pfc/pinctrl.c +++ b/drivers/pinctrl/sh-pfc/pinctrl.c @@ -26,7 +26,6 @@ #include "../pinconf.h" struct sh_pfc_pin_config { - u32 type; bool mux_set; bool gpio_enabled; }; @@ -353,16 +352,6 @@ static int sh_pfc_func_set_mux(struct pinctrl_dev *pctldev, unsigned selector, spin_lock_irqsave(&pfc->lock, flags); - for (i = 0; i < grp->nr_pins; ++i) { - int idx = sh_pfc_get_pin_index(pfc, grp->pins[i]); - struct sh_pfc_pin_config *cfg = &pmx->configs[idx]; - - if (cfg->type != PINMUX_TYPE_NONE) { - ret = -EBUSY; - goto done; - } - } - for (i = 0; i < grp->nr_pins; ++i) { ret = sh_pfc_config_mux(pfc, grp->mux[i], PINMUX_TYPE_FUNCTION); if (ret < 0) @@ -395,14 +384,6 @@ static int sh_pfc_gpio_request_enable(struct pinctrl_dev *pctldev, spin_lock_irqsave(&pfc->lock, flags); - if (cfg->type != PINMUX_TYPE_NONE) { - dev_err(pfc->dev, - "Pin %u is busy, can't configure it as GPIO.\n", - offset); - ret = -EBUSY; - goto done; - } - if (!pfc->gpio) { /* If GPIOs are handled externally the pin mux type need to be * set to GPIO here. @@ -414,7 +395,6 @@ static int sh_pfc_gpio_request_enable(struct pinctrl_dev *pctldev, goto done; } - cfg->type = PINMUX_TYPE_GPIO; cfg->gpio_enabled = true; ret = 0; @@ -436,7 +416,6 @@ static void sh_pfc_gpio_disable_free(struct pinctrl_dev *pctldev, unsigned long flags; spin_lock_irqsave(&pfc->lock, flags); - cfg->type = PINMUX_TYPE_NONE; cfg->gpio_enabled = false; spin_unlock_irqrestore(&pfc->lock, flags); } @@ -450,7 +429,6 @@ static int sh_pfc_gpio_set_direction(struct pinctrl_dev *pctldev, int new_type = input ? PINMUX_TYPE_INPUT : PINMUX_TYPE_OUTPUT; int idx = sh_pfc_get_pin_index(pfc, offset); const struct sh_pfc_pin *pin = &pfc->info->pins[idx]; - struct sh_pfc_pin_config *cfg = &pmx->configs[idx]; unsigned long flags; unsigned int dir; int ret; @@ -470,8 +448,6 @@ static int sh_pfc_gpio_set_direction(struct pinctrl_dev *pctldev, if (ret < 0) goto done; - cfg->type = new_type; - done: spin_unlock_irqrestore(&pfc->lock, flags); return ret; @@ -794,13 +770,11 @@ static int sh_pfc_map_pins(struct sh_pfc *pfc, struct sh_pfc_pinctrl *pmx) for (i = 0; i < pfc->info->nr_pins; ++i) { const struct sh_pfc_pin *info = &pfc->info->pins[i]; - struct sh_pfc_pin_config *cfg = &pmx->configs[i]; struct pinctrl_pin_desc *pin = &pmx->pins[i]; /* If the pin number is equal to -1 all pins are considered */ pin->number = info->pin != (u16)-1 ? info->pin : i; pin->name = info->name; - cfg->type = PINMUX_TYPE_NONE; } return 0;