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| author | Joachim Eastwood <manabian@gmail.com> | 2016-02-25 22:44:37 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2016-03-07 10:41:20 +0700 |
| commit | b18537cd8ec2e5280ba19d24ea8812b80e5b3208 (patch) | |
| tree | 4e0384f11a062ee3ecb1141501d543b284a4ff2f /drivers/pinctrl/core.h | |
| parent | 5e9a207547079a23c3d4ecb4bad050ba8acc3f59 (diff) | |
| download | lwn-b18537cd8ec2e5280ba19d24ea8812b80e5b3208.tar.gz lwn-b18537cd8ec2e5280ba19d24ea8812b80e5b3208.zip | |
pinctrl: core: create nolock version of pinctrl_find_gpio_range_from_pin
pinctrl_find_gpio_range_from_pin takes the pctldev->mutex but so
does pinconf_pins_show and this will cause a deadlock if
pinctrl_find_gpio_range_from_pin is used in .pin_config_get
callback.
Create a nolock version of pinctrl_find_gpio_range_from_pin to
allow pin to gpio lookup to be used from pinconf_pins_show.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/core.h')
| -rw-r--r-- | drivers/pinctrl/core.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/pinctrl/core.h b/drivers/pinctrl/core.h index b24ea846c867..ca08723b9ee1 100644 --- a/drivers/pinctrl/core.h +++ b/drivers/pinctrl/core.h @@ -182,6 +182,10 @@ static inline struct pin_desc *pin_desc_get(struct pinctrl_dev *pctldev, return radix_tree_lookup(&pctldev->pin_desc_tree, pin); } +extern struct pinctrl_gpio_range * +pinctrl_find_gpio_range_from_pin_nolock(struct pinctrl_dev *pctldev, + unsigned int pin); + int pinctrl_register_map(struct pinctrl_map const *maps, unsigned num_maps, bool dup); void pinctrl_unregister_map(struct pinctrl_map const *map); |