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sh-pfc: Use proper error codes

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Return proper error codes instead of -1, and propagate the error codes.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Laurent Pinchart 2013-03-10 16:38:23 +01:00
parent cd3c1beecf
commit b705c05425
3 changed files with 25 additions and 31 deletions
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19
drivers/pinctrl/sh-pfc/core.c
View File

@ -93,7 +93,7 @@ int sh_pfc_get_pin_index(struct sh_pfc *pfc, unsigned int pin)
offset += range->end - range->begin + 1; offset += range->end - range->begin + 1;
} }
return -1; return -EINVAL;
} }
static int sh_pfc_enum_in_range(pinmux_enum_t enum_id, static int sh_pfc_enum_in_range(pinmux_enum_t enum_id,
@ -233,7 +233,7 @@ static int sh_pfc_get_config_reg(struct sh_pfc *pfc, pinmux_enum_t enum_id,
k++; k++;
} }
return -1; return -EINVAL;
} }
static int sh_pfc_mark_to_enum(struct sh_pfc *pfc, pinmux_enum_t mark, int pos, static int sh_pfc_mark_to_enum(struct sh_pfc *pfc, pinmux_enum_t mark, int pos,
@ -255,7 +255,7 @@ static int sh_pfc_mark_to_enum(struct sh_pfc *pfc, pinmux_enum_t mark, int pos,
} }
pr_err("cannot locate data/mark enum_id for mark %d\n", mark); pr_err("cannot locate data/mark enum_id for mark %d\n", mark);
return -1; return -EINVAL;
} }
int sh_pfc_config_mux(struct sh_pfc *pfc, unsigned mark, int pinmux_type) int sh_pfc_config_mux(struct sh_pfc *pfc, unsigned mark, int pinmux_type)
@ -264,6 +264,7 @@ int sh_pfc_config_mux(struct sh_pfc *pfc, unsigned mark, int pinmux_type)
pinmux_enum_t enum_id; pinmux_enum_t enum_id;
const struct pinmux_range *range; const struct pinmux_range *range;
int in_range, pos, field, value; int in_range, pos, field, value;
int ret;
switch (pinmux_type) { switch (pinmux_type) {
@ -288,7 +289,7 @@ int sh_pfc_config_mux(struct sh_pfc *pfc, unsigned mark, int pinmux_type)
break; break;
default: default:
return -1; return -EINVAL;
} }
pos = 0; pos = 0;
@ -297,8 +298,8 @@ int sh_pfc_config_mux(struct sh_pfc *pfc, unsigned mark, int pinmux_type)
value = 0; value = 0;
while (1) { while (1) {
pos = sh_pfc_mark_to_enum(pfc, mark, pos, &enum_id); pos = sh_pfc_mark_to_enum(pfc, mark, pos, &enum_id);
if (pos <= 0) if (pos < 0)
return -1; return pos;
if (!enum_id) if (!enum_id)
break; break;
@ -341,9 +342,9 @@ int sh_pfc_config_mux(struct sh_pfc *pfc, unsigned mark, int pinmux_type)
if (!in_range) if (!in_range)
continue; continue;
if (sh_pfc_get_config_reg(pfc, enum_id, &cr, ret = sh_pfc_get_config_reg(pfc, enum_id, &cr, &field, &value);
&field, &value) != 0) if (ret < 0)
return -1; return ret;
sh_pfc_write_config_reg(pfc, cr, field, value); sh_pfc_write_config_reg(pfc, cr, field, value);
} }

13
drivers/pinctrl/sh-pfc/gpio.c
View File

@ -276,22 +276,17 @@ static int gpio_function_request(struct gpio_chip *gc, unsigned offset)
struct sh_pfc *pfc = gpio_to_pfc(gc); struct sh_pfc *pfc = gpio_to_pfc(gc);
unsigned int mark = pfc->info->func_gpios[offset].enum_id; unsigned int mark = pfc->info->func_gpios[offset].enum_id;
unsigned long flags; unsigned long flags;
int ret = -EINVAL; int ret;
pr_notice_once("Use of GPIO API for function requests is deprecated, convert to pinctrl\n"); pr_notice_once("Use of GPIO API for function requests is deprecated, convert to pinctrl\n");
if (mark == 0) if (mark == 0)
return ret; return -EINVAL;
spin_lock_irqsave(&pfc->lock, flags); spin_lock_irqsave(&pfc->lock, flags);
ret = sh_pfc_config_mux(pfc, mark, PINMUX_TYPE_FUNCTION);
if (sh_pfc_config_mux(pfc, mark, PINMUX_TYPE_FUNCTION))
goto done;
ret = 0;
done:
spin_unlock_irqrestore(&pfc->lock, flags); spin_unlock_irqrestore(&pfc->lock, flags);
return ret; return ret;
} }

24
drivers/pinctrl/sh-pfc/pinctrl.c
View File

@ -114,18 +114,16 @@ static int sh_pfc_func_enable(struct pinctrl_dev *pctldev, unsigned selector,
const struct sh_pfc_pin_group *grp = &pfc->info->groups[group]; const struct sh_pfc_pin_group *grp = &pfc->info->groups[group];
unsigned long flags; unsigned long flags;
unsigned int i; unsigned int i;
int ret = -EINVAL; int ret = 0;
spin_lock_irqsave(&pfc->lock, flags); spin_lock_irqsave(&pfc->lock, flags);
for (i = 0; i < grp->nr_pins; ++i) { for (i = 0; i < grp->nr_pins; ++i) {
if (sh_pfc_config_mux(pfc, grp->mux[i], PINMUX_TYPE_FUNCTION)) ret = sh_pfc_config_mux(pfc, grp->mux[i], PINMUX_TYPE_FUNCTION);
goto done; if (ret < 0)
break;
} }
ret = 0;
done:
spin_unlock_irqrestore(&pfc->lock, flags); spin_unlock_irqrestore(&pfc->lock, flags);
return ret; return ret;
} }
@ -144,7 +142,7 @@ static int sh_pfc_reconfig_pin(struct sh_pfc_pinctrl *pmx, unsigned offset,
const struct sh_pfc_pin *pin = &pfc->info->pins[idx]; const struct sh_pfc_pin *pin = &pfc->info->pins[idx];
unsigned int mark = pin->enum_id; unsigned int mark = pin->enum_id;
unsigned long flags; unsigned long flags;
int ret = -EINVAL; int ret;
spin_lock_irqsave(&pfc->lock, flags); spin_lock_irqsave(&pfc->lock, flags);
@ -156,17 +154,17 @@ static int sh_pfc_reconfig_pin(struct sh_pfc_pinctrl *pmx, unsigned offset,
case PINMUX_TYPE_INPUT_PULLDOWN: case PINMUX_TYPE_INPUT_PULLDOWN:
break; break;
default: default:
goto err; ret = -EINVAL;
goto done;
} }
if (sh_pfc_config_mux(pfc, mark, new_type) != 0) ret = sh_pfc_config_mux(pfc, mark, new_type);
goto err; if (ret < 0)
goto done;
cfg->type = new_type; cfg->type = new_type;
ret = 0; done:
err:
spin_unlock_irqrestore(&pfc->lock, flags); spin_unlock_irqrestore(&pfc->lock, flags);
return ret; return ret;